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August 13, 2007 03:09 PM

Categories: Televisions and Projectors

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Brian17

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Joined: 08/13/2007

I have been doing a lot of research on how to fix the convergence issue with my TV.  It's a Sony KP-46WT500.  I noticed on these boards and from the boards at FixYa that I need to get 2 Sanyo STK-392-560 IC's.  I am going to order these from mcminone.com.

I noticed that it's also recommended to have the service manual for this repair.  I am wondering if anyone has the manual that they can send to me.  Larry, I'm hoping you may have one.

If so, my email address is jets5150 and that's @aol.com (spam filter).

I've found the suggestions and information on fixing this problem very useful so far.  Thanks for your help!

Discussion:    Add a Comment | Comments 26-50 of 393 | Latest Comment | « Previous 1 2 3 4 516 Next »

September 12, 2007 7:58 PM

Looking at a similar thread, I need to supply you my email address for the manual - bruce@ftcnet.net.  I have done the Pando thing.

Thanks - Bruce

September 12, 2007 11:56 PM

Hey Bruce...

I had an older version of the manual that said to init the nvram by using 7-enter in the PJE mode... DO NOT DO THIS unless the convergence is still way off!!!   I didn't see the corrections until after I'd already done it.

If, after replacing the chips, your convergence is still way off and you're sure your fuses are good and all your solder joints are good... then the process is explained starting like page 25 or 29.... 

And yes... I hated discouraging Brian... because I am SO thankful for Larry as he's saving so many of us LOTS of money...   but, I seriously feared for his safety as he was asking how to use a MM.

And yeah... heh heh... the HV stuff is a serious bummer if you screw up & heart/breathing stop while you're working alone! 

September 13, 2007 11:43 AM

Ok - thanks Poke.  I realized that some of the other models may not have the "flash focus" feature on my KP-53HS30.  I am assuming that Sony found a way to auto converge, but without the manual, I'm only guessing...

I took a look at the resistors below the heatsink and they all look good.  I'm not sure where to find the pico fuses, as I haven't received my parts yet (any time today...) and I haven't removed the board yet...

Thanks for staying in touch.

 Bruce

September 13, 2007 2:25 PM

I asked for 5 and 3.125 amp fast blow picofuses at a local TV shop and electronics supply...  I'm hoping this was right as the peeps at sony were no help.... and couldn't tell if their # was for the 5 or 3.125 size...

The fuses are under the heatsinks and on my tv, they were yellow and packaged like resistors.  I replaced 2-3 of the 3.125 on that board and one 5 amp blown on the power supply board...

Yeah - if your convergence looks close,  you should be able to use the flash focus in service mode...

If it works, the flashfocus completes and returns to prev. screen.  Then you can write the new offset data using <muting> <enter> (explained in the manual).  [Make sure you turn off bright lights and flip the cover back up to darken the set before you do this or you'll get a false code]

If it err's, it will return Sx [errcode] where x is the sensor and [errcode] refers to possible solution given in a tablein  the manual....

September 13, 2007 2:54 PM

Hey Poke - thank you for the info.  My flash focus is a button on the mini front panel, and all you do is push it and it does a quick special display of crosses (and in the process does it's own convergence...)  I don't know about a service mode or codes because I've never come across this in my quick debugging of this problem, which all started about a week ago while I was watching the set and all of a sudden the red on the left side of the screen jumped over to the left and went a little non-linear.  Hopefully Larry will pick up this thread and send me a manual - which is really cool of him to do for others.

 Thanks again Poke!

September 13, 2007 3:03 PM

The UPS guy just dropped off my order from BD Enterprises with the STKs, heat sink grease and some wick.  I guess I'll replace the chips, check for any blown fuses I can find, check for fried resistors and fire it up.  I hope I won't blow the chips if I missed something, I assume it simply won't converge until I get it all...

September 13, 2007 9:38 PM

Good luck!   Let me know how it goes!

Poke 

September 14, 2007 9:21 AM

Auto-convergence is nothing more then a preset convergence that is stored in an electronic memory and when you press the flash focus button, it calls up for this memory and inputs it or loads the preset settings into the electronic convergence circuit the same way that the service mode does it.  It should explain in the service manual how to set up the auto convergence. If you do not change the entire board, and only change the chips, the auto convergence should be ok. If you do however change out the entire board, the eeprom IC on the convergence board should be swapped out also.  Oh And BTW, I did send that manual to you my freind. I sent it to  bruce@ftcnet.net

"Those who do not know their opponet's arguments, do not completely understand their own".

September 14, 2007 3:11 PM

Thank you Larry for the information above - it's good to know as I proceed.  I haven't seen the email yet (address looks good) and I did a test email with Pando which worked.  Could be lost in ether?

I'm only changing the STKs for now, so I'll keep the eeprom as is.  Thanks again!

September 14, 2007 4:40 PM

Bruce - the latest pando seems to have issues for those of us who don't turn our computer off every day... so, try turning your computer off/on if you haven't since you installed...

A friend had the same issues, but when he rebooted he found all 5 things I sent him in the recieved tab....

September 14, 2007 10:07 PM

Hey thanks Poke - I rebooted but nothing so far.  My test sent me an email, which I figure really should start the process --

BUT - SUCCESS!!!!  I put in the ICs and one bad pico fuse - hit "Flash Focus" and COOL!!!

Thanks so much to Larry and Poke!  I would like to say some more about the process that I think all will be interested in - but right now - I'm headed for a BEER and a MOVIE!!

 Will update soon!

 Bruce

September 14, 2007 10:37 PM

Where did you buy the IC's from? Do the new IC's have Sanyo written on them?, And did you use heat sink compound on the back of the new IC's?

"Those who do not know their opponet's arguments, do not completely understand their own".

September 15, 2007 2:07 AM

Congrats, Bruce!  

September 15, 2007 10:34 AM

Hi Larry,

I bought the ICs from B&D Enterprises - and although the invoice says "Sanyo" the chips don't - which was concern to me after reading your comments....  I did use heat sink compound (ZnO Silicone).

I learned a few things I'd like to pass on.  First, I can't imagine doing this repair with it still in the TV as another website indicated (wire the board up and R&R the parts).  I started taking off the heatsinks, and with the heat required to wick the solder, I asked myself why I was taking them off in the first place.  So I left them on and simply took out the ICs.  I then checked for any blown pico fuses and found PS8001 open.  So it was 4:45 on Friday afternoon when I started frantically calling a TV shop to see if I could get one (I live in the Sierras and the closest resemblance of a town is over 30 min away....)  The guy said he had a 3A, not a 3.15A.  He said he replaces them all the time and they are more of a failure device than actually working close to their rating.  Since it was a lower value I decided to use it - we'll see...  He also said that he just looks at the board for burned resistors, if none, checks the pico fuses and if one is blown he checks the impedance of the IC where the fuse is connected.  If "OK", he just replaces the fuse, which he says are very delicate and can just break on their own.  This would save a lot of work if that's all it is....

The only "yikes!" I had doing this job is taking off the red wires from the HV xformer.  The secondary that goes to the other set of coils was kind of tough to push and twist 90 deg.  But the real problem was the other red wire going to the front panel pot panel..   I kept pulling/twisting/swearing until it just came out and looked like I had just pulled the wire out without a connector.  During reassembly, I just pushed back in.  Larry - what's the right way to take this wire out???

Larry - thanks again for your insight and everyone who has contributed to this thread.  I was very proud of myself, I must say, for doing it without a manual.

Along that thougt, I still haven't received an email with the manual.  Not to bug you, but am I doing something wrong??

Until later guys!

September 17, 2007 8:11 AM

Larry,

 First of all thanks for the manual.  I installed the new IC's and the image looks the same.  I am not able to modify the G,R, or B settings in the service mode.  For example in the GRN CENT nothing happens when I change the values and it won't record them obviously.  I can modify other settings, but not these.  I am getting a ERR 031 in PJE mode and a Error G C/SK Adj Loop Over after hitting Flash in this mode.  I made some adjustments to the VMID and HMID so the patterns are hitting the sensors now, but no change.  I would appreciate your help.

Thanks,

Robert

September 17, 2007 10:45 AM

Robert, you are messing with the wrong controls! There is still a problem with the convergence so redo all the adjustments like they were before you started or you will have one heck of a mess when you do finally get the convergence working. I hope any changes you made in the service menu, you did write down the values first!? I certainly hope you did. You need to measure the voltages on the IC's using the schematic diagram and make sure there is - 20 to 25 volts and positive 20 to 25 volts. If there is not, there is a circuit protector or a small pico type fuse that is blown. If there is the proper voltage, you will need to check all of the resistors in the feedback circuit of the IC's. Sometimes peeps do get lucky and change the IC's and the set works great, but a lot of times this is not the case and further troubleshooting is needed.

"Those who do not know their opponet's arguments, do not completely understand their own".

September 17, 2007 10:59 AM

Larry,

Larry, 

You are absolutely correct.  I did write the settings down and the original settings are in the manual (which is real nice), so there should be no problem getting back the the original settings.  I was not getting the 22V+ and the 22V- at the IC or the harness coming to the board.  I traced the harness back to the G board and and this morning I checked the voltage coming off the G board.  I think there are fuses possibly blown in the 22V lines.  I will set the settings back to original and hopefully it is just a blown pico on the G board.  Based on your previous accounts are there any other things you think it might be?

Thanks for all your help,

Robert

September 17, 2007 11:12 AM

Nope, always check voltages if a repair does not give you the proper results after you replace a part. Yes I agree the 22 volt pico fuses are bad. Also make sure there are no solder splashes as well as solder bridges around where you soldered. I have seen a tiny solder splash blow out the power supplies.

"Those who do not know their opponet's arguments, do not completely understand their own".

September 17, 2007 7:40 PM

Hi Larry,I am having convergence issue with my Sony projection TV (KP-46WT500). You seem to be very knowledgeable with this issue (and much more!). I live in Martinez, CA. I am just wondering if you live the Bay Area, and if you do fix TV’s for a living, please contact me at: C.Seetharaman@Gmail.com.

I checked with the local TV repair shop and they are estimating a high cost (even without seeing the TV!).

ThanksSeetha 

September 18, 2007 1:54 AM

No sorry I do not live in the rattle area of the bay. Ground moves around way too much for me. And yes I do fix TVs for a living. How did you ever guess? Lol

"Those who do not know their opponet's arguments, do not completely understand their own".

September 18, 2007 8:57 AM

Larry,

I replaced a 5 amp pico on the G board that was blown (PS5001 going to terminal 4 on the board).  It was the -22V line to the IC's.  IC's seem to be working fine now.  I failed to previously mention that my G,R,B convergence settings were all at zero when this problem happened.  The picture is the same.  If I change the convergence settings for R,G,B I can get the grid close and the picture looks a lot better, but I have no idea what the factory settings are since they are not in the manual or listed in the TV after the problem.  Do you or anyone else have a list of the settings for these? 

 Thanks again,

Robert

September 18, 2007 6:05 PM

There are no factory settings. You have to adjust the set from the service menu. If you do not know how to do this, play it safe and call out an authorized Sony repair person to make the alignments, as this is not the place to be experimenting around with. These settings, if not done properly, can destroy a TV set.

"Those who do not know their opponet's arguments, do not completely understand their own".

September 19, 2007 7:57 AM

Larry,

 I got a list of settings (E.G GRN\CENT, GRN\LIN, etc... including RED and BLUE also) off another site for a KP-44.  I set it is as my baseline and adjusted it from there.  I got the picture looking really good.  I set up the GREEN grid first by itself.  Then I adjusted the RED and Blue to match.  Once I got the grid close I changed the setting to the dots to fine tune the rough convergence alignment.  There is just a slight wave and the outside edge is slightly off.  Once I finish up the rough convergence I will go back in and do the fine convergence.  I was just wondering how are those color convergence settings established initially (factory?) and can I possibly get a list of settings from another KP-46WT500 user to create a more accurate baseline.  I just wanted to also say that YOU ARE THE MAN!, my brother gave me his 6 year old $1,800 color TV that he was throwing away (that looks like new).  I spent under $30 and now it is fixed ( 2- IC's and 1 - 5amp pico).  You have made my 10 year old son very happy.

Keep up the good work,

Robert

September 19, 2007 8:06 AM

Well I stand corrected. Yes you can certainly use another sets settings for a baseline adjustment and go from there. Just rememebr, always write down anything you change just in case you need to go back and fix something. Great job!

"Those who do not know their opponet's arguments, do not completely understand their own".

September 19, 2007 6:10 PM

Larry Dillon said: Well I stand corrected. Yes you can certainly use another sets settings for a baseline adjustment and go from there. Just rememebr, always write down anything you change just in case you need to go back and fix something. Great job!
Hey Larry and Robert - the baselines are in the service manual at the beginning of the section covering convergence.  I don't remember the page, but I do remember using the table to input the key, skew, pin, vlin, mlin, etc.... and then stepping through them grn (with bags over lenses),  then taking off red cover, doing red... then blu....  (it steps you through in janglish)

Discussion:    Add a Comment | Back to Top | Comments 26-50 of 393 | Latest Comment | « Previous 1 2 3 4 516 Next »

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