toshiba 53hx71 blinking red light

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David1234
David1234's picture
toshiba 53hx71 blinking red light

Looking for some help. I have a toshiba 53hx71 that worked perfect the night before, but when I got up to watch the news the very next morning all I go was a flashing red light. Any advice. Could it be the power supply and if sow what should I look for to be the problem.

Thanks

David E.

Kenzo
Kenzo's picture
david  open the the back of

david  open the the back of your tv look for  p807 on the power supply  unplug it  and plug your  tv to the wall outlet  and hit the power bottom if the tv come on that mean you convergence problem replace both STK's 392-110

basic555
basic555's picture
dave,

dave,

i have the same problem.  i noticed this before and i plugged and unplugged the power cord and it worked.  however this time, it didn't work.  the second time it happened was when my son was turning it on and off constantly...i guess that had what happened the first time. 

funny how it happened a year after my extended warranty expired.   

kenzo, thanks for the advice, i'll let you know if it works after i follow your advice. 

basic555
basic555's picture
Kenzo said: david  open the

Kenzo said: david  open the the back of your tv look for  p807 on the power supply  unplug it  and plug your  tv to the wall outlet  and hit the power bottom if the tv come on that mean you convergence problem replace both STK's 392-110

Kenzo,

i can't locate p897 nor the STK 392-110 IC.  Can you take a picture if you don't mind?

thanks,

james

Kenzo
Kenzo's picture
basic555 said: Kenzo said:

basic555 said:

Kenzo said: david  open the the back of your tv look for  p807 on the power supply  unplug it  and plug your  tv to the wall outlet  and hit the power bottom if the tv come on that mean you convergence problem replace both STK's 392-110

Kenzo, i can't locate p897 nor the STK 392-110 IC.  Can you take a picture if you don't mind? thanks, james

will p807 on the power supply board  and the STK's 392-110 is on the big aluminum heatsink is a metal

Kenzo
Kenzo's picture
basic555 can you check the

basic555 can you check the fuses F850,F851,F852 if blown replace and you bad connection also.Underneth the board Do you have knowledge to repair televisions goodluck

Larry Dillon
Larry Dillon's picture
Very common problem. There is

Very common problem. There is a Toshiba service bulletin out on this . Look for F860, if it is blown, do not replace it till you pull out the chassis and look in the main power supply for the two large capacitors, C809 and C810. They may have bad connections on the negative connections due to the printed circuit board eyelet being left out of the set. I have repaired many of these sets and once after another tech wanted to charge the customer 600 bucks! Just be very careful when working on this TV set. Good Luck

Bobk9979
Bobk9979's picture
Kenzo said: basic555 said:

Kenzo said:

basic555 said:
Kenzo said: david  open the the back of your tv look for  p807 on the power supply  unplug it  and plug your  tv to the wall outlet  and hit the power bottom if the tv come on that mean you convergence problem replace both STK's 392-110

Kenzo, i can't locate p897 nor the STK 392-110 IC.  Can you take a picture if you don't mind? thanks, james

will p807 on the power supply board  and the STK's 392-110 is on the big aluminum heatsink is a metal

I just had this issue arise this past week.  I have followed you instructions and found the STKs, but I can't discern where the P807 plug is located.  I have traced all of the wiring to their locations on the power supply board but none of them is labeled P807.  Can you head me in the right direction?

shidentype2
shidentype2's picture
can capacitator stk 392-110

can capacitator stk 392-110 be tested to see if blown?

TommyTester
TommyTester's picture
Larry Dillon THANK YOU VERY

Larry Dillon THANK YOU VERY MUCH: My blinking red light and blown F850 + F852 were solved by simply resoldering the C809 and C810. PRAISE THE LORD. Time invested in researching and talking to local Toshiba shops was 12 hours. Toshiba shops were familiar with what I discussed but also said convergence ICs must also be replaced with an estimated in house repair cost of $500. No thank you. Satisfaction with fixing it myself with your help, PRICELESS!

I wish I had been able to find the Toshiba Service Bulletin. Someone posted a link but without the Toshiba tech login info I could not access it. If you have it would you send it to me. Thanks again and Happy New Year.

Larry Dillon
Larry Dillon's picture
yes a very common problem

yes a very common problem with the Toshiba, I will attempt to send the bulliten I posted several months ago, but whatever does not really matter as long as it halp you do a FIY "Fix it Yourswlf" or shall I say a DIY to save big bucks, abd these days unlessm your a CEO and still gettting a few million dollar bonuds for running the corpoation to the limits ( THE GROUND!!!!_) The iorney is you pid FOR IT!I need an e- mail to send you anything, I am good but NOT a fortune teller.

TommyTester
TommyTester's picture
You can email to trt-junk

You can email to trt-junk@comcast.net if you have it...
for future reference. Thanks Larry.

TommyTester
TommyTester's picture
Larry, you really know your

Larry, you really know your stuff. I like that. I have the Toshiba 57H81 factory service manual and I want to tune up the convergence beyond the user level convergence. Is there a link on this forum that walks you through any tricks of the trade or perhaps a youtube video of doing. I paid a professional five years ago to both adjust the color and convergence. Thanks again. Tom from Indianapolis (NOT A CEO but an entrepreneur.)

TommyTester
TommyTester's picture
Larry Dillon THANK YOU VERY

Larry Dillon THANK YOU VERY MUCH: My blinking red light and blown F850 + F852 were solved by simply resoldering the C809 and C810. PRAISE THE LORD. Time invested in researching and talking to local Toshiba shops was 12 hours. Toshiba shops were familiar with what I discussed but also said convergence ICs must also be replaced with an estimated in house repair cost of $500. No thank you. Satisfaction with fixing it myself with your help, PRICELESS!

I wish I had been able to find the Toshiba Service Bulletin. Someone posted a link but without the Toshiba tech login info I could not access it. If you have it would you send it to me. Thanks again and Happy New Year.

Larry Dillon
Larry Dillon's picture
yes a very common problem

yes a very common problem with the Toshiba, I will attempt to send the bulliten I posted several months ago, but whatever does not really matter as long as it halp you do a FIY "Fix it Yourswlf" or shall I say a DIY to save big bucks, abd these days unlessm your a CEO and still gettting a few million dollar bonuds for running the corpoation to the limits ( THE GROUND!!!!_) The iorney is you pid FOR IT!I need an e- mail to send you anything, I am good but NOT a fortune teller.

TommyTester
TommyTester's picture
You can email to trt-junk

You can email to trt-junk@comcast.net if you have it...
for future reference. Thanks Larry.

TommyTester
TommyTester's picture
Larry, you really know your

Larry, you really know your stuff. I like that. I have the Toshiba 57H81 factory service manual and I want to tune up the convergence beyond the user level convergence. Is there a link on this forum that walks you through any tricks of the trade or perhaps a youtube video of doing. I paid a professional five years ago to both adjust the color and convergence. Thanks again. Tom from Indianapolis (NOT A CEO but an entrepreneur.)

papa j
papa j's picture
hey kenzo are you out there??

hey kenzo are you out there?????? I am working on my toshiba 53hx71 and have the power light blinking and found the 3 pico fuses blown..850,851,852 and have searched for that bad connection and cant seem to locate. i have re-installed the board once after changing 3 fuses and both the 392-110 and all 3 fuses blew again do you have any insite?????

Larry Dillon
Larry Dillon's picture
Where did you get the ic's

Where did you get the ic's from. are they the original stk ic's?The best advice I can tell you at this point is to go to tvrepairkits.com and order the complete convergence kit for your model of TV set, no need to search and order multiple parts from different sources and pay multiple shipping fees! The kit comes with original Sanyo STK IC'S , not those cheap aftermarket or china made IC'S full pictorial directions, the thermal paste, resistors, the correct Pico fuses, AND free live on-Line tech assistance in case you run into a problem with the repair. They ship out 2 to 3 day Priority mail, the next day in most cases GOOD LUCK!!!

papa j
papa j's picture
hey larry how are you? I want

hey larry how are you? I want to say that i got these parts from tritronics and do believe they are sanyo parts..do you relly think that it con be a bad stk part that i have put in..i did not think that the stks were the main problem when the pico fuses were found to be blown...i acually had them here in stock on my shelf and had first relaced them...i still had the blinking light..i removed the board again and checked farther to find f850,851 blown . i then replaced them and tried again...still no good. i pulled the board and checked the fuses and this time 850 851 and 852 were blown. i have checked all me diodes and looked at most of the transistors with a meter and dont find anything apperent (shorted) i also inspected the board for bad connections on the bottom and may have found 1 or two but still nothing. i have checked all the resistors in the convergance section and all appear to be good also. i checked the two caps c810 and c809 connections and they are also good.you still think i should try 2 new stk392-110 or do you have any other thoughts..

eddy64
eddy64's picture
Kenzo & Larry: Thank you very

Kenzo & Larry: Thank you very much. I just fix my Toshiba 53HX71 by replacing the dead ICs stk392-110

papa j
papa j's picture
Well i Re-ordered 2 more of

Well i Re-ordered 2 more of the stk392-110 and made sure to order the sanyo originalls. Went ahead put the on in and tried the board again. No go. took the board out and checked the pico fuses f850 and f851 both were blown again. Any ideas anyone. HELP

TommyTester
TommyTester's picture
Most likely the C809 / C810

Most likely the C809 / C810 solder connection as described in this thread. I fixed mine by not only resoldering but adding redundant wires along the paths. Was never able to find the Toshiba bulletin (w/o tech login) but Toshiba told me about it. Wish someone would post the Toshiba bulletin. I was told that a manufacturing defect meant that each of those capacitors was missing some reinforcement of some sort at the solder connections and over time they cause the problem. I fixed this once by resoldering but it only lasted several months. I resoldered again adding the wires and it has been good since.

TommyTester
TommyTester's picture
THREE DOT PROBLEM (PERFECT

THREE DOT PROBLEM (PERFECT TRIANGLE) in center of screen. After the second time I resoldered by C809 C810 capacitors I ended up with three dots in a triangle in the center of my screen. Never replaced convergence chips.

Has anyone ever had this three dot issue after fixing the blinking red light problem? Thanks.

Damien C
Damien C's picture
I also replaced the

I also replaced the convergence chips from tvrepairkits.com but 850 and 851 blew again immediately on power up. We have checked C809/810 and they seem to be ok, F860 has never blown it has always been a combination of 850/851/852. 853 has never blown. Any other ideas on possible things to check. I'm running out of time, wife wants a new tv ;-)

Damien C
Damien C's picture
Even though C809/810 seemed

Even though C809/810 seemed to check out with the meter, tried Tommy's trick of adding redundant wires and now have my picture back. Am hoping the fix sticks and lasts a while! Thanks for all the advice in this thread.

Larry Dillon
Larry Dillon's picture
most of the time I have just

most of the time I have just re soldered the big power supply caps but you need to remove the old solder and scrap off the paint all the way around both of the caps connections then resolder really good.

papa j
papa j's picture
Hey guys i just finished

Hey guys i just finished cleaning all the solder from C809 and C810 and re-soldeed along with adding the wires from point to point on these caps. Pluged the board back into the set and still i blew F850 / F851. Does anyone have the print for this power supply board or dose anyone have any other thoughts..I am running out of ideas?????????

Larry Dillon
Larry Dillon's picture
make sure you check all of

make sure you check all of the caps, diodes, and resistors for open or shorted conditions. you can also try putting a 75 to a 100 watt light bulb across the main fuse and if the light lights up bright when you turn on the set most likely you have a bad power supply or maybe the horizontal output transistor is shorted good luck!!!!!
Larry Dillon

papa j
papa j's picture
Well guys i have finally got

Well guys i have finally got a print for this power supply for this set..I have now pulled and checked all the caps and diodes that are related to the +/- 16volt line and found nothing wrong.I have replaced the bridge that the 16v is sourced from and have moved over to the signal board at this time.. Looks like the +/- 16 volt supplies the 12 volt regulators and they check out ok.Have checked the surface mount transistors and they look good prior to the two 392-110s. I have already put 2 sets of the 392-110 in ... i am still blowing the two pico fuses 850 and 851. whats next any suggestions.Besides giving up

Larry Dillon
Larry Dillon's picture
you need to check ypour

you need to check ypour soldering on the ic's and make sure there are no solder splashes or shorts across the ic pins.also do not use the cheap inexpensive stk that you can buy online for 5 to 10 bucks each!!!The best advice I can tell you at this point is to go tohttp://www.tvrepairkits.com/xcart/home.php?partner=larry
and order the complete convergence kit for your model of TV set, no need to search and order multiple parts from different sources and pay multiple shipping fees! The kit comes with original Sanyo STK ICÂ’S , not those cheap aftermarket or china made ICÂ’S full pictorial directions, the thermal paste, resistors, the correct Pico fuses, AND free live on-Line tech assistance in case you run into a problem with the repair. They ship out 2 to 3 day Priority mail, the next day in most cases,

papa j
papa j's picture
Well guys i finally got

Well guys i finally got another chance to look at my board and started to retrace my steps. I got to looking at the print that i finally was able to get and followed the +/- 16volt line.Low and behold one of the first parts that i put in was the la7833 vert deflection proc. and found some strange ohm readings around the VCC lines.So i re-ordered the chip put it in and low and behold the set is back up and working.THANK GOD .. Its been a long battle and would like to thank all that had some input into this problem..Now that we know this board inside and out if anyone needs help or a copy of prints we have them..Thanks again to all....

papa j
papa j's picture
Well guys i finally got

Well guys i finally got another chance to look at my board and started to retrace my steps. I got to looking at the print that i finally was able to get and followed the +/- 16volt line.Low and behold one of the first parts that i put in was the la7833 vert deflection proc. and found some strange ohm readings around the VCC lines.So i re-ordered the chip put it in and low and behold the set is back up and working.THANK GOD .. Its been a long battle and would like to thank all that had some input into this problem..Now that we know this board inside and out if anyone needs help or a copy of prints we have them..Thanks again to all....

Larry Dillon
Larry Dillon's picture
yes please upload that

yes please upload that service manual on the technicians corner on the home page under the resources tab please that will certainly help others tremendously Thanks , oh by the way glad you got your set repaired the way I figure it you saved yourself at least 450.00 to 500.00 bucks!!!!
Larry Dillon.

tink71
tink71's picture
help i have a Toshiba 50h81

help i have a Toshiba 50h81 tv and it has that blinking red light and i read everything i called two places and they want 105. just to come here and figure out the prob..is a single mom and unemployed at this time.i have left the tv unplugged for a while now like everyone stated....still gets that red light..i am not good with electrics to figure what is being said.and the other place i called said thy dont touch the tv anymore cant get the part for them.....what do i do now..besides the red blinking light the tv is awesome and i dont have the money to go get a new tv.....HELP PLEASE!!!!!

papa j
papa j's picture
Tink71 were are you posting

Tink71 were are you posting from. what state

papa j
papa j's picture
gotch ya.. Well if you are

gotch ya.. Well if you are not electronic savey then you will for sure need to have a tech that knows what they are doing. it is a very repairable item and the parts are readly avaliable. I am not to sure what i can do for you being here in ct.

tink71
tink71's picture
thanks for trying

thanks for trying

i mean i dont want to touch anything and break the tv had it for 5 years now and i love it...as soon as the person answered the phone and told me 105. just to come out i said no and hung up..that is so to much and i was reading the threads and seen what it would cost and i have not that money to give out....

tdurham
tdurham's picture
My brother has the same

My brother has the same blinking light. I am going to help him fix it but I need to get the service manual. I did not see where anyone has posted a link for a PDF version of this manual. Is there one out there?

Thanks!!

tdurham
tdurham's picture
sorry, did not mean to double

sorry, did not mean to double post :0

Larry Dillon
Larry Dillon's picture
that is the same chassis as

that is the same chassis as the 50HX81 that will be uploaded to the technicians corner later today. Good Luck
Larry Dillon

tdurham
tdurham's picture
Larry Dillon said: that is

Larry Dillon said: that is the same chassis as the 50HX81 that will be uploaded to the technicians corner later today. Good Luck Larry Dillon

Thanks Larry!  I will check it later.  Sorry for the double post.  I did not catch that it was waiting on me to verify the email before letting me see the post :0  .

Larry Dillon
Larry Dillon's picture
what is the issue with the

what is the issue with the toshiba set??
L.D.

TommyTester
TommyTester's picture
5-2-2010

5-2-2010
PERFECT TRIANGLE THREE DOT PROBLEM REMAINS. Otherwise everything else is fine.

Larry Dillon, Any ideas?

December 15, 2009 3:52 PM

THREE DOT PROBLEM (PERFECT TRIANGLE) in center of screen. After the second time I resoldered by C809 C810 capacitors I ended up with three dots in a triangle in the center of my screen. Never replaced convergence chips.

Has anyone ever had this three dot issue after fixing the blinking red light problem? Thanks.

Larry Dillon
Larry Dillon's picture
take off the screen and look

take off the screen and look directly into to three lens with the set off do you dee any marks on the picture tubes?? if you do you will need to replace all three tubes as it mayt be the set has burnt picture tubes

TommyTester
TommyTester's picture
Will do. Sounds a bit ominous

Will do. Sounds a bit ominous. If I find dots on each I'll just live with it given the age of the set and likely cost of fixing. Will let you know. Thanks Larry. Tommy Tester

Larry Dillon
Larry Dillon's picture
that is a hard thing to do

that is a hard thing to do without telling mr=e the complete model number and or the chassis number
Larry Dillon

Larry Dillon
Larry Dillon's picture
How was I ominous? was not

How was I ominous? was not meant to sound that way??? sorry you took it wrong!!!
Larry D

TommyTester
TommyTester's picture
Larry: Ominous meant

Larry: Ominous meant expensive as in the cost or replacing all three guns most likely exceeds the value of the this nice, but aging set. As always I appreciate your expertise. Tom

Larry Dillon
Larry Dillon's picture
oh ok as that is not what I

oh ok as that is not what I was taught it means? probably no I would say the setdoes not owe you anything cut your losses and buy a new one!
Good Luck
Larry D.

Matt1096
Matt1096's picture
hey guys... hoping your still

hey guys... hoping your still there and hoping you can still help me...
I posted this a while ago but got no response I'm just about ready to trash the tv now so this is my final attempt... I'll post the link to the thread I wrote about it instead of rewriting the whole thing and taking up a bunch of space on my reply

http://www.techlore.com/forum/thread/29587/Toshiba-50hx81-red-blinking-l...

please help me...
thanks
Matt

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