I just had my 51" panasonic projection tv repaired few days ago, the next day it started it again the same problem. The problem is the picture expands were the top and the bottom goes past the viewing part of the tv. the part that was replaced is a transformer integrated high voltage. now i have also a CHK 11f5d in the upper left corner.
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Re: expanding picture
Call the service rep who did the work. They replaced the failed parts, but did not find the original cause of the failure. You should tell them that! Replacing the parts without finding the original cause will only cause the present work done to fail again.
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Yes,the tv is fixable.When was the tv projection lamp been inside this tv was replaced in this tv,when was it the last time the bulb was replaced?The last time the probjection lamp was replaced about 1 1/2 or 2 years ago?The tv on an used at leat 4 or 5 hours a day?The projection lamp life is over.Require a new projection lamp.
the beeping would be due to a failed power supply unit inside or a fuse there-of i would check this out before making costly repairs that will not work in the long run, hook me up with a good rating and have a good day!
This can be repaired by a Degaussing coil from most TV repair places. If you haven't already you should shut down the TV and wait till it cools maybe 1 hour or so and then when you turn it on there should be a degaussing circut that might clear this up for you build into the set. Its not that strong a signal and usually takes care of minor discolorations. If it doesn't have that then a shop can come and take care of it pretty fast usually.
power transistors in the convergence circuits on this series TV go bad after several years, making the wavy lines around the edge of the screen and 'doubling' of the edges of the text in varied colors which do not converge. Professional repair is required unless you are brave enough to tackle the project yourself and follow some rather simple instructions, buy a few tools from Radio Shack, and save yourself about $500 bucks...which I did on my own 42" Panasonic rear projection set.
Common problem and fairly easy to fix. Problem Screen shrinks and expands - may or may not correct itself after the TV warms up. After a few days, weeks, or months of having the shrinking/expanding problem you may loose all audio/video but the power light will remain lit!
Check with the site www.TvRepairKits.com. They have built a kit to fix this problem.
If you have any of the following problems you may want to check the site www.TvRepairKits.com for a repair kit. Most of the issue below are fairly common with the older Magnavox projection sets. Symptom: Screen shrinks and expands - may or may not correct itself after the TV warms up. After a few days, weeks, or months of having the shrinking/expanding problem you may loose all audio/video but the power light will remain lit!
Symptom: No Audio or Video but power light is on
Symptom: Audio works but no Video. Power light still work
Symptom: No Video. Audio is intermittent. Power light still works
You need to replace both convergence ICs numbers STK392-570 this is an easy repair which requiresasic soldering skills. you can get replacement ICs that come with free step by step instructions with pictures so you can do the repair yourself, they also provide free on line tech support in case you have any questions . Heres the link http://servicemanuals.vstore.ca/