Question about Toshiba TP50H95 50" Rear Projection Television

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Discharge flyback transformer

I want to replace the convergence IC's on a TP50H95 toshiba rear projection tv. Their part numbers are STK392-110. I want to make sure that there isn't a possibility of getting shocked. The set has been unplugged for about a month. How do I discharge stored voltage so that I may disassemble the tv for desoldering the IC chips?

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You take a long screw driver and a jumper wire to ground and touch any metal on the Red HV wire.

besure to check the resisters other wise it will blow the IC again.
i would also use stk392-180's

Posted on Dec 06, 2007

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How do i fix my toshiba flat screen 57" tv when it looks like it is 3d


Howdy;
It sounds like the convergence IC's have failed.
Replace the defective Convergence Output IC Part Number 23905094 (STK392-110) using the revised “T” version IC Part Number 23135090 (STK392-110T). When Convergence Output failure is detected, it’s recommended that both IC’s be changed to the “T” type IC version. Inspect the Convergence Output IC’s for the “T” type version.

1420-B Toshiba Dr.
Lebanon, TN 37087
Fax: 615-444-7520
www.tacpservice.toshiba.com/tacp
Good Luck, Big Irish.

Nov 22, 2009 | Toshiba 61HX70 61" Rear Projection...

3 Answers

I have a Toshiba rear projection TV model # 50H71 for about a month the tv would randomly pop off (lose sound and picture) for about 45 seconds and then come back on now th picture is reduced in size by...


Good Day,
The TV has a convergence problem; the IC’s for that circuit will need to be replaced. The cost for this repair runs around $450.00 or more.

Replace the defective Convergence Output IC Part Number
23905094 (STK392-110) using the revised “T” version IC Part Number
23135090 (STK392-110T). When Convergence Output failure is
detected, it’s recommended that both IC’s be changed to the “T” type IC
version. Inspect the Convergence Output IC’s for the “T” type version as
shown in Figure 2. Replace the Convergence Output IC’s using the “T”
type version Part Number 23135090 (STK392-110T).

Thanks for choosing FixYA, Big Irish

Nov 22, 2009 | Toshiba TZ50V51 50" Rear Projection...

1 Answer

Same as the others


I recently had what sounds like the same problem. The problem was that the focus anode coming out of the flyback had broken loose enough to start arcing inside the flyback. You might want to verify that this connection is tight.

Jul 13, 2009 | Toshiba TP50H95 50" Rear Projection...

1 Answer

TV will not turn on


the convergence amps might need resoldered. thias is a common problem after the run for a few years

Jul 10, 2009 | Toshiba TP50H95 50" Rear Projection...

1 Answer

I have a RCA HD 52in and I'm have a problem with the Convergence Ic's


Hi, rca`s don`t have convergence IC`s, they use an entirely different system to perform convergence, you have a blown chemical fuse and 3-6 bad solder joints on your flyback transformer. replace fl231 chemical fuse rated at 400ma. right beside flyback (theres 3 of them your bad one is the middle one)and while your soldering re-solder all of the flyback transformer pins and your tv will be back to normal :) video-tek

Jun 04, 2009 | RCA R52WM24 52" HDTV Projection Television

2 Answers

Toshiba 57H81, power to transformer and flyback.


IF YOU REPLACED THE SAME PICO FUSE, YOU PROBABLY HAVE A BAD CONVERGENCE IC AGAIN . DID YOY SNUG UP THE IC TO THE HEAT SINK AND USE THERMAL HEAT COMPOUND ON THE NEW IC'S? ALSO CHECK SOLDER CONNECTIONS TO C810 AND C809 THE FUSE BY THE CAPACITORS MAY BE OPEN.

Jan 22, 2009 | Toshiba 57H81 57" Rear Projection...

1 Answer

Convvergence problem w/ Toshiba 50H82


You need to replace following ICs, may be 2 pieces in your tv for convergence problem.
IC, STK392-110T

Toshiba Part Number: 23135090X
Please search on net for availability in part stores

Sep 27, 2008 | Toshiba 50H82 50" Rear Projection...

2 Answers

Toshiba TP50H95 TV Won't turn on - Pete


You will need to trouble shoot the start up and shutdown circuits. Often this is a minor component failing causing the set to not power up or go into protective shutdown. Do you have the service manual for this TV?

Mar 01, 2008 | Toshiba TP50H95 50" Rear Projection...

2 Answers

No picture


Convergence amp ic have loose connection or are bad.
if you want to fix it yourself:
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm

Dec 07, 2007 | RCA D52W20 52" Rear Projection HDTV-Ready...

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