Re: DAC90A. No Longwave.
The capacitor concerned was one of those dipped in wax rather than one with a hard outer coating as is common today. I think that the leads are attached to the plates by a riveted on solder tag. I wondered whether this had perhaps corroded, but made contact again when moved/heated during fault finding.
The set is still working fine on LW, but I had to put an additional capacitor of 27pF I think in parallel with the 515 pF to get the calibration right on LW. I decided not to replace the 515 pF with an increased value capacitor, as I want to see if it fails again. I'll know where to look first if LW fails again.
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Graham. Forum Moderator
Reach for your meter before you reach for your soldering iron.
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