Sont TV (circa 1993) Problem...

Aug 12, 2005 2 Replies
J

My friend has a problem with a 1993 Sony TV, Model KV-27TS27.



When he turns it on the picture has pronounced horizontal lines and there is a pronounced buzzing sound, except for channels 47 and above, which are fine. When the channel is changed, the program on the screen does not change.



After a few minutes, channels 3-6 became clear without the buzzing sound. Finally after about 15 minutes, all channels become clear without the buzzing sound.



Any suggestions......Thanks for your help!!!


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K

Pull out the tuner and resolder the inside connections as they crack also if the set has the IF module pull that and do the same.

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D

Three things needs fixed.

  1. SBX1637 audio mts decoder module is probably bad, or will be soon and is on the same board that needs pulled out to get at the IF module.
  2. IF module need the coils resoldered to the board.
  3. Tuner needs removed, unsoldered from main board, and opened up as there are failed solder connections inside the tuner, especially the grounds to the can and the contact pins.
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