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SFDR Reverb
Posted: Tue Oct 10, 2006 6:28 am
by wmthor
I got my SFDR back from the shop yesterday and now I'm a little bummed. I started getting a high pitched hum whenever the reverb is turned up past 4 or 5. Any idea of what I can do short of returning it to the shop?
Posted: Wed Oct 11, 2006 5:48 am
by ric480
If you have a spare 12AT7 tube, swap it with the reverb driver tube in V3. If still humming, swap a spare with the 12AX7 in V4. If still humming, at least you know the reverb tubes aren't the problem.
Posted: Thu Oct 12, 2006 3:38 am
by wmthor
Thanks John.
Posted: Thu Oct 26, 2006 6:23 am
by admin
Richard: Charlie's back, perhaps he can give you some pointers.