Sony KP-46WT500 Convergence Repair

Previous Thread | Next Thread

Learn about scoring Forum's Raw Score: 6851230.0

August 13, 2007 03:09 PM

Categories: Televisions and Projectors

Rating (1 votes)

Rate This!

Brian17

Member
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 376-393 of 393 | Latest Comment | « Previous 1 … 14 15 16

Davebshk

Member

member since: 06/08/2009
rank: 1807 of 36411
2 comments

July 3, 2009 12:12 PM

ngupta50 said:

Hi Davebshk,
I also have KP-46WT500 TV and In addition to blue elliptical lines I have a blue haze on the picture. I was told that it can be fixed by RGB adjustment. I was wondering if you found out where they are located. I will greatly appreciate this info.

Hi.

I removed the front panel and adjusted the the RGB. Pretty easy adjustment. Lines are gone and picture looks great, but now my power light flashes 5 times indicating a white balance problem. Reset and it still flashes. I'll never buy Sony again. I'll just use this one til it stops working.

ghostxmas

Member

member since: 09/02/2009
rank: 1398 of 36411
1 comments

September 2, 2009 12:48 AM

Does anyone have the service manual still for the 46wt500 sony tv? If so I need it sent to acopas2008@windstream.net. My set comes on okay but slowly gets blue and then turns to solid blue with a bow tie like line at the top and bottom. From what I have read it's the Convergence IC's stk 392-560 and maybe blown pico fuses. From what I can find the pico fuses look like small dark resistors and should be close to the IC's. I have moderate experience in electronic repair. I see you can buy kits with IC's , fuses, and resistors. Does anyone know the location id's of all the pico fuses and resistors related to the IC's?

Arcane Hayter

Member

member since: 09/18/2009
rank: 112 of 36411
location: Weatherford, United States
2 comments

September 18, 2009 4:10 PM updated: September 25, 2009 7:38 AM

So my KP-46WT500 finally went on the fritz yesterday. The green and red seam to be out of alignment and the green looks to be distorted also.
I read through this post and all the replies and started disassembling the TV this morning.
I have a question though, has anyone had the IC's fail without any pico fuses being blown? I'm not finding any that are blown at the moment and now its got me questioning my initial problem.
I can say this, I was appalled at the amount of dust inside this set. I've done my best to clean it all out. Has anyone cleaned any of the parts inside, projector lenses, mirror, etc., and if so what did you use?

Any help would be much appreciated.

(update 1) Ordered the replacement 560's today and spoke with a local TV repairman. He said he has seen the IC's fail without the picos blowing, but I'm still a little worried.

(update 2) Removed the IC's today, new ones will be in Thursday. Does anyone know how many pico fuses are on the G board? Schematic shows 4. I've only found 2 so far (without removing the board).

(update 3) Wired in the new IC's last night. TV works again! I got lucky and didn't have to replace any fuses. Picture was a tad blurry but flash focus fixed that. Made sure the chips were transferring heat to the sinks before buttoning it all up. Those little guys put out a lot of heat!

Thanks for all the info in this post, I couldn't have done it without it.

Comet65

Member

member since: 10/04/2009
rank: 70 of 36411
5 comments

October 4, 2009 12:45 AM

Larry, I hope you are still on here and can send me a service manual for my sony KP-46WT500 so that I can fix it. ranchero65@yahoo.com Thanks in advance! Ed

Arcane Hayter

Member

member since: 09/18/2009
rank: 112 of 36411
location: Weatherford, United States
2 comments

October 4, 2009 11:13 PM

Comet65 said: Larry, I hope you are still on here and can send me a service manual for my sony KP-46WT500 so that I can fix it. ranchero65@yahoo.com Thanks in advance! Ed

I downloaded it from here: http://www.givemefile.net/smanuals/project_tvs/sony/file/30405.html#

Comet65

Member

member since: 10/04/2009
rank: 70 of 36411
5 comments

October 5, 2009 2:15 PM

Thank you Arcane!!

sap147

Member

member since: 10/08/2009
rank: 432 of 36411
4 comments

October 8, 2009 11:51 AM

Okay, so I am having this same problem with my KP-46Wt500. I ordered the repair kit from tvrepairkits and installed the 2 new IC chips, however the TV is still messed up. Also, it seems that only one chip is generating heat, the other stays cold. I double checked the solder job and it seems fine. Should I go for the pico fuses now?

Comet65

Member

member since: 10/04/2009
rank: 70 of 36411
5 comments

October 8, 2009 1:08 PM

Reading all the posts here, That sounds like a safe bet. There are 2 or three on the vertical board to the left, and 3 under each convergence IC heat sink. I am still waiting for parts to repair my set.

sap147

Member

member since: 10/08/2009
rank: 432 of 36411
4 comments

October 8, 2009 1:12 PM

Comet65 said: Reading all the posts here, That sounds like a safe bet. There are 2 or three on the vertical board to the left, and 3 under each convergence IC heat sink. I am still waiting for parts to repair my set.

Do I have to de-solder one of the fuse when I test them? Or can I test them directly on the board. Thanks

Comet65

Member

member since: 10/04/2009
rank: 70 of 36411
5 comments

October 8, 2009 1:18 PM

test them right on the board. If they don't show shorted, replace them. Mine all were .2-.3 ohms except the bad one at 200k ohms. that was with a good digital meter.

sap147

Member

member since: 10/08/2009
rank: 432 of 36411
4 comments

October 8, 2009 1:25 PM

Comet65 said: test them right on the board. If they don't show shorted, replace them. Mine all were .2-.3 ohms except the bad one at 200k ohms. that was with a good digital meter.

Okay, I went straight to the G board first and tested the two pico fuses PS5002 & PS5001 straight on the board. For one of them, the multimeter dropped to practically 0. The other one had no activity and stayed at '1' the entire time. I did this like 10 times just to make sure, and same result everytime. Safe to assume that fuse is bad?

sap147

Member

member since: 10/08/2009
rank: 432 of 36411
4 comments

October 8, 2009 3:48 PM

UPDATE: That fuse was bad, replaced it and TV WORKS PERFECT NOW!!

Comet65

Member

member since: 10/04/2009
rank: 70 of 36411
5 comments

October 9, 2009 9:16 AM

Glad you got it fixed. hope mine works as well.

Larry Dillon

Expert

member since: 06/17/2006
rank: 1 of 36411
12 articles authored
11 forum threads started
9840 comments

October 9, 2009 10:26 AM

oh it will if you get the kit for your set at tvrepairkits.com. you will get everything you need with the complete kit even the original convergence ic,s
Larry Dillon, oh and the pico fuses would check bad-right away if you disconnect one side of the pico fuse before testing it.
Larry Dillon

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

jr5050jr

Member

member since: 10/26/2009
rank: 1000 of 36411
1 comments

October 26, 2009 8:28 PM

Hello, I am also experiencing a similar problem with my Sony KDP-WS550, the converge seems to be slightly off. The blue does not seem to be aligned with the other colors, when I do the flash focus it doesn't resolve it. I've had the TV for about 4 years now. The TV is great. I was hoping that someone send me the manual to this tv. your help would be greatly appreciated.

OPRCzar

Member

member since: 11/04/2009
rank: 289 of 36411
2 comments

November 4, 2009 3:52 PM updated: November 4, 2009 4:09 PM

I started out with a convergence problem. When I brought up the convergence screen grid, I didn't get the "cursor" they talked about in my research. I purchased the TVRepair kit and I changed out the convergence IC's and still had the same problem. I changed out the pico fuses, I found 1 bad one. I tried it again and was able to get the cursor, move it around and change colors. I couldn't get any movemment in the grid lines. I changed the resistors that came with the repair kit and when i turned on the set I got sound and no picture. I realized I forgot to plug in the high voltage block connector on the D board. I powered down and connected the connector. When I powered up, I got the stanbdy led blinking 6 times. Service manual indicates its an overvoltage / overcurrent problem. Could I have blown the high voltage block? How do you check it? Or could I have blown something else. Any help would be appreciated.

Larry Dillon

Expert