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In Reply to: RE: Teddy Pardo TeddyDac DAC review posted by barrows on December 17, 2010 at 22:21:51
hmm, thanks for the tip, hadn't thought of that. I emailed cullen circuits, will see what is the reply.
Would a visual inspection detect caps that had degenerated? To be safe, I assume I'd should wait a week at least after the unit is unplugged before opening it?
kenzo
Follow Ups:
Kenzo:
I would almost be willing to gauruntee that your main filter caps are dried out with a P-300 that has not been serviced in ten years. Inspection may,or may not, reveal the problem. Sometimes the caps will be bulging at their tops. When I removed mine, I could shake them and they would rattle!
Unfortunately, the P-300s were specced with capacitors used at the limits of their voltage rating-this combined with the heat generated inside the P-300 leads to the caps drying out.
Get all the elctrolytics replaced, Rick Cullen will also upgrade them to better caps if you like (highly recommended). Remember, the P-300 is essentially a signal generator, with an amplifier output stage, like any amp, it will perform better with better parts (lower noise, better dynamics). It is totally worth spending some money on it, as the general design is very sound, and with new, upgrade capacitors it will perform better than new.
Mention my name when you hear from Cullen Circuits as well.
I'll do that, and thanks again for the info!
ken
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