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Projection TV shutdown, convergence modules?

Toshiba TPH5560 55inch

For a long time the red was bending. Shaking the TV would stop it for anywhere from one minute to three weeks. Now the TV goes into safety shutdown immediately after powering.

What are the chances it's anything but one of the stk392-110 convergence modules?

I don't really know what I'm doing, but from what I've read this seems like a DIY fix rather than paying $200-$300. The desoldiering is all that worries me, but I figure I can pick up some practice materials from Radio Shack.

I also read that it's important to get the stk392-110 from a reputable source. Is this one good?

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Thanks a lot.

Reply to
Matt S
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On Sat, 16 Dec 2006 18:11:49 -0800, Matt S Has Frothed:

Just replaced a set of the same modules in my 51" Pana. Make sure you check the low value resistors in and around the plugs that go to the CRTs (I'm assuming the setup is similar to the Pana). I had 4 burned 10 ohm

1/10 watters that were charred, all on the green CRT plug which is what color shifted. My set would still play though even with the bad 392-110. I bought both devices from MCM electronic OEM Sanyo IIRC. I used thing desolder braid and a low watt iron. Be careful as if the lands were overheated they may pull up during the desolder process. Also buy a can of flux stripper and clean the freshly soldered joints to make sure you didn't bridge any. Also clean the heat sink well and use a decent conductive paste. If all of this makes sense then go ahead and replace the devices. 
--
Pierre Salinger Memorial Hook, Line & Sinker, June 2004

COOSN-266-06-25794
Reply to
Meat Plow

MCM has had problems with the STK392-110 that they supplied in the past. I don't know if they are still selling the same parts but they were believed to be counterfeits at one time. I'd stick with suppliers that go out of their way to verify the parts are OEM Sanyo, such as B&D, Acme, or Electronica (not Electronix).

Also, the STK392-110 was discontinued a long time ago. Even the replacements have all been discontinued by Sanyo. The direct replacement is the STK394-250, but the STK392-150 has been used by several manufacturers and has ahigher power rating. The STK394-160 appears to replace it, but we have not been able to confirm the rating on that one yet.

According to the Sanyo info, the 394 series has slightly better thermal performance and the case should make it harder to counterfeit.

Leonard

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Reply to
Leonard Caillouet

On Sun, 17 Dec 2006 11:06:18 -0500, Leonard Caillouet Has Frothed:

Well I guess we'll see how mine holds up. I suspect I'll have no problems.

--
Pierre Salinger Memorial Hook, Line & Sinker, June 2004

COOSN-266-06-25794
Reply to
Meat Plow

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