"Marky P" wrote in message
...
Hi,

I've been replacing all the caps in my vintage Wurlitzer Jukebox amp.
The problem was one channel was buzzing quite badly. Now ive done it
all, the bad channel has stopped working altogether (only a slight
hum). I checked my wiring and noticed one of the caps I changed is
the wrong value (22uF instead of 150uF). This cap is in the faulty
channel. Does anyone know if it would make that much difference?

Marky P.


It depends what the capacitor does. If it's a cathode decoupling capacitor,
the low value will cause the bass to roll-off early. If it's a power supply
decoupling capacitor, the low value will give you less smoothing and/or
decoupling at low frequencies, and so possibly give you low frequency
instability, which could manifest itself as a low-frequency "motor-boat"
type of sound.

Neither will stop the channel working altogether, so you need to look
elsewhere for a reason.

S.
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