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Old 24th Feb 2012, 5:56 pm   #3
Don_Zalmrol
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Join Date: May 2009
Location: Ghent, Belgium
Posts: 273
Default Re: Philips B6X12A on the fritz…

Thx for the reply Robert

It's strange, the noise (was a hum) seems to be gone now…
Yesterday it was generating quite (hearable-background-noise) some noise through the speakers…

So I've unplugged the radio and just now turned it back on and the noise seems to be gone, so it is probably some bad cap in the circuitry…

The noise was on all wavelengths including the gram input.

To replace the smoothing cap, the original one seems to deliver 2x50uF for a max of 300VDC (C1, C2). Can I use two elco's of 47uF @ 350VDC, since the next available cap from Distrelec is 68uF and is to high for the EZ81 valve rectifier (it is max 50uF according to the data sheet)
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