No audio audio go out for long periods of time

This could be a fail with the speaker in the phone (water damage is a favourite), electronic faults (The Analogue to digital converter is failing), or simply a lack of signal strength in your area causing the signal to fail. Remember mobile phones are actually a radio transceiver and that all the problems that affect them also affects mobile phones (Crackly signal loss of signal bad audio etc etc).

It will most probably need an overhual of the power supply

Most likely is an intermittent solder connection opening up as set warms up.

I had this problem on a sharp flatscreen lcd. the audio output i.c. was a surface mount chip-had to change complete signal board assembly,

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try to resolder your vertical output IC thats a commen problem when the tv does that

Normal 0 Go to "TOOLS", click on "OPTIONS," Then go to "Audio Settings" and click on it. Make sure both the Microphone and Speaker's are correctly chosen. Then "make a free test call." Wait till the voice tells you to record. Then when finished talking wait for the test persons voice to insure your audio transmission is working. Then go back to options and test your video settings. Click on Video Settings and proceed to set up you video camera. Also, you can visit this site for additional information to setup video.
http://www.skype.com/help/guides/video/
Hope this helps. Bud

The actual switching is done by an electronic microprocessor. This electronic processor is most likely faulty by now, and needs to be replaced. Repair costs for this are expensive enough that buying a new receiver might be the best logical action, as a new comparable unit might cost only slightly more than the needed repair costs for the SA HE 200. Good luck.

the deflection circuit shut down and i hope it didn't burn the crt's .