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Tech Head - The Technology Section
The Work Bench and Soldering Station
TV colour comes and goes...
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<blockquote data-quote="Llew" data-source="post: 171955" data-attributes="member: 175007"><p>Maybe your repairer just re-adjusted the colour reference oscillator trimmer (a common problem with some Sonys).</p><p>If the colour is still dropping out, it could be the associated components around this area (PAL decoder IC) taking the oscillator out of range, or the IC itself.</p><p></p><p>OSD and Teletext graphics are generated locally and go to the CRT aft of the decoder, as does RGB from your scart, so won't be affected. Does your other equipment use the RGB input of your scart, or composite (CVBS)?</p><p></p><p>CVBS from your VHS recorder goes to the PAL decoder, which would give the same symptoms as above, but unfortunately doesn't explain why you still have colour from off-air signals. Have you the model number of your Sony?</p><p></p><p>Llew</p></blockquote><p></p>
[QUOTE="Llew, post: 171955, member: 175007"] Maybe your repairer just re-adjusted the colour reference oscillator trimmer (a common problem with some Sonys). If the colour is still dropping out, it could be the associated components around this area (PAL decoder IC) taking the oscillator out of range, or the IC itself. OSD and Teletext graphics are generated locally and go to the CRT aft of the decoder, as does RGB from your scart, so won't be affected. Does your other equipment use the RGB input of your scart, or composite (CVBS)? CVBS from your VHS recorder goes to the PAL decoder, which would give the same symptoms as above, but unfortunately doesn't explain why you still have colour from off-air signals. Have you the model number of your Sony? Llew [/QUOTE]
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Tech Head - The Technology Section
The Work Bench and Soldering Station
TV colour comes and goes...
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