Question about Toshiba 55H70 55" Rear Projection Television

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No picture Had convergence issues about 3 months ago all went smooth replacing chips, then about 2 weeks ago , set intermittently had to warm up (about 5 min.) before you would get a picture , now warming up doesn't help at all and have sound but no picture .set is only about 6 yrs old.

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Re: no picture

57H81 57 in. Rear Projection Television Go to above unit for tip on your problem.

Posted on Jun 29, 2007

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53udx10b hitachi rear projection big screen. replaced convergence chips 2 months ago. Worked awesome. Started having power issues 3 weeks ago. Turn on - kicks right back off. Used to be able to turn...

Sounds like the problem started out with an intermittent solder connection possibly on the deflection PWB unless the power relay has a bad connection or is breaking down under load. If it is not the power relay, I would check the connections under the deflection board - paying close attention to the area from T701 and T752 including the Horizontal output Transistor for a short. You also have a possibility of defective filter capacitors causing the problem as well.

Jan 29, 2011 | Hitachi 53UDX10B 53" Rear Projection...

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I have a 2001 52''Hatchi Ultavision DPL TV Model# I3uwxIoB. The picture went out of alingment over a year ago. A tv tech came to the house and replaced a chip. The tv seemed to work and was not used for...

YOUR PROBLEM IS IF ONLY ONE OF THE TWO CONVERGENCE CHIPS WAS REPLACED--you got screwed over--both chips have to be replaced at the same time====53uwx10b?

sd tech

Nov 04, 2009 | Projection Televisions

1 Answer

Panasonic PT-47WX53 has intermittant convergance issue

I would chack the solder connections at the convergence ICs first. Since the set "recovers" on its own, it suggests a connection issue rather than a defective component. Also, if the ICs were installed without sufficient heat sink compound, this could happen as well. Look at low valued resistors in the area of the ICs for signs of overheating as well.

Keep us posted on your progress.


Oct 19, 2009 | Panasonic Projection Televisions

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Toshiba TP48C90 Convergence (replaced ICs, worked for 2 days)

Well, my thought is that there are a ton of knock off generic convergence IC's out there that usually hold up as long as yours did. Professionals like me will only use Sanyo original STK's. The counterfeit STK's out there are everywhere. Do some research on the web to locate Sanyo originals, they are out there.

Jun 11, 2009 | Toshiba Projection Televisions

1 Answer

Intermittently screen move to one side with distrited picture

Might be the convergence chips. Do you have any problem moving the convergence under the menu setting? Convergence chips are reasonably priced. If you know a friend or someone who can solder better than average, I would go this route. My tv wasn't that bad; I wasn't able to set 2 of the 3 colors during convergence setup. Changing the 2 convergence chips did the trick!

May 24, 2009 | Philips 43PP9202 43" Rear Projection...

2 Answers

TV Picture is distorted

Hi, common issue in your set, the convergence IC`s have failed, if your real proficient at soldering & un-soldering you can replace them, if not you need to call a tv tech, video-tek

Feb 02, 2009 | Philips 60PP9753 60" Rear Projection...

1 Answer

Picture flickers in and out rapidly,gets blurry for about 5sec then looks like new for about 5sec then back again

Did you replaced 2 IC convergence as well or just 2 resitors 3.9 ohms ? if you did replaced 2 IC then you might have probelm in convergence drive it is1 of the PCB mount vertical on the left side from the rear view under part BP95-00415C you need to readjust the convergence by using your remote control just follow in the servive manual

Nov 22, 2008 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

Phillips 60'' rear projection

There are only a couple of things that can casuse chirping in that model...1 is the convergence ic's and the other is the flyback. There are others but these are the two most common. Who replaced the convergence chips?
Do you know how to use a meter?
do you know how to soler?

Oct 26, 2008 | Projection Televisions

1 Answer

No picture but have sound

Toshiba 57H81 57 in. Rear Projection Television Go to above under solution for tip on fixing your problem.

Jun 22, 2007 | Toshiba TP50H50 50" Rear Projection...

2 Answers

Wavy picture

this is caused by a bad convergence module, and there are probably some dried out electrolytic caps in the circuit as well. i have one in the shop right now that came in with the same problem. if you have it serviced, make sure they replace all of the convergence modules (there are usually 2, but sometimes 3 of them), because if one went bad the other(s) is likely to go out soon as well.

Jun 28, 2006 | Toshiba 65H82 65" Rear Projection...

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