Question about Hitachi 43FDX20B 43" Rear Projection Television

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Red Projector is twisted

I had my TV cleaned and repaired and part the repair was a twisted yoke at least that is what the repair man said. It needs to be aligned again. I don't want to have someone come out to fix it. Is this something I can do? I didn't see what the repair man did but it seemed easy. Can anyone tell me what he turned to fix it?

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  • Julie12 Feb 24, 2008

    I have a reddish tint in my television and blurr , it seems to almost want to double , I have taken off the front panel and tied to ajust the setins of the blue green and red jet but it's still the same i've also presed the magic focus and the problem is still there ,is there anything else I could check or do? Thanks

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The yoke sits on the tube it will have a screw you have to turn to loosen, how ever there is high voltage in that area and i don't suggest getting in and moving it unless you know what your doing.
you should mark it with a sharpie so you can get it back to where it was, there is also two tabs on the yoke that can be moved to adjust it.

Posted on Jan 29, 2008

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Posted on Jan 02, 2017

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1 Answer

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That will be a matter of preference but I would replace it. The problem itself is caused by a lack of voltage, when the system gets hot the contacts separate decreasing the voltage in the case the ribbon as the repair man said to you above. not the ribbon itself but the ribbon carry's the voltage and can only carry whats there, in this case the contacts does not have proper contact.. ( I really hope that made sense).. Personally to prevent the inconvenience I would have repaired and sold it, and gotten a new one.

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I have a panasonic projector tv model pt-56tw53g, when i turn on it wont come on but the red light blink 5 time. is there a problem with my lamp or the power supply.


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Unit appears to have poor convergence due to:
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Cause:
The yoke or yokes may have:
(1) rotated slightly or
(2) slipped down during transport.

Resolution:
Loosen a yoke and lower to inspect the tape. If black tape is present remove it from under all yokes (white tape or no tape is OK). Slide yoke or yokes up tight against the CRT and tighten to prevent slipping or rotation. Precede with
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My Zenith tv plays well, then the picture starts jumping and then picture goes off. Repair man has had tv for almost 2 months and can't seem to find out what is wrong.


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1 Answer

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Something is not right here. Is there any possibility that you can get the circuit designation (Rxxx) of the resistors that were "incorrect"? I am not aware of anything like this that can cause the "memory to be erased". The only memory in that area would be the factory convergence settings which can be modified from the service menu. Please try to supply the resistor IDs and I'll check on this.

Thanks,
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1 Answer

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Dan

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1 Answer

Bad red coloring


You may still have a convergence problem, but what you need to do is to make sure that all of the bias resistors have been checked. That is why I am against the old replace the STK392-110 catch all convergence repair line. However what I want you to do is actually troubleshoot this set. That will mean determining if the voltages on the convergence correction amplifiers are good, if the convergence coils are good and if the deflection yokes are good. You will need the schematic diagram to aid you with the task of troubleshooting along with a multimeter, and oscilloscope, and a signal generator. If you however do not have electronics experience, I would suggest taking the TV to a qualified TV repair shop. I know this might not be what you want to hear, but it is good advice.

I hope this helps,
Shuttle83

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