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'90 jvc xl-z574: often "00" TOC displayed
'90 jvc xl-z574: often "00" TOC displayed
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Old 15th October 2017, 08:13 PM   #31
Mooly is offline Mooly  United Kingdom
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'90 jvc xl-z574: often "00" TOC displayed
I find solder braid the best for removing parts. They should come out in seconds with zero damage to both print and the old parts.

The four 1.5uF caps in your diagram above all seem to be extra decoupling across larger electrolytics. If those are the ones you mean then ceramics are a good choice.
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Old 15th October 2017, 09:01 PM   #32
seppstefano is offline seppstefano  Italy
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So it's time to buy some solder braid, I must say I never loved much the (de)soldering pump. Yes. the 1.5uF caps are extra decoupling near the DAC, in parallel to (moderately) larger electrolytics. I already beefed the elco up, with higher voltage ratings but was wondering if it might be the case to improve them: on the 1541 I seem I recall the general consensus was to exchange the ceramics with MKP or CDE polymeric.

Thank you as usual for sharing your time!
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Old 16th October 2017, 08:27 AM   #33
Mooly is offline Mooly  United Kingdom
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'90 jvc xl-z574: often "00" TOC displayed
Cheap ceramic caps really can be the best option for adding across larger electrolytics. Their low self inductance means they keep working well at the higher frequencies (filtering all the noise and hash generated by the DAC). I would leave the originals alone.
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