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How old is this unit look on thr rear panel for mfg. date,possoble clod solder connections in deflection circuit and power supply if unit is more than 3yrs old.
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you need to press must on the remote and whilst holding mute, pess menu on the left hand side of the tv. that will let you in to service mode. im sure if you press 7 in service mode it will let you in to the convergence menu.
Convergence amp ic bad http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html Sony Convergence http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/ http://www.techlore.com/article/19631/Sony-Convergence-Procedure/
possible clod solder connection in the scan b+ voltages,contact sony and get them to check their dealer store locations in your area and have them send a message to the dealer describing your fault to them also.
This TV uses small voltage regulators. On each side of the regulators is the input voltage and the regulated output voltage on the other side. There are capacitors used for stabilization on the input and output. Change these capacitors.
Check the audio menu to see what the factory defaults are. It could be that the audio processor is in a mode which turns off the internal speakers. Usually this is accessable from the customer menus. Most models have several choices for the audio processor and without checking I have no idea what the factory setting would be. I would not think that they would ship a unit that way but stranger things have happened. It certainly can't hurt to see where it is set. Certainly if you have sound through an external amp the sound circuits are working up to the built in amplifier. I suppose the internal amplifier could have a problem but it would be 1 in a million that it happened just as you were doing adjustments in the service mode. I think that it would have to be a configuration issue if it worked before. Good luck.
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