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Old 1st April 2008, 03:13 PM   #11
chrish is offline chrish  Australia
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Join Date: Oct 2003
Location: Sydney
Also see that you have four switches on the front. You have probably read the warnings, but don't wire up a standby switch. I have the same Hammond transformer as you (374BX?) and 193H choke with a oil motor run cap. I was using a JJ GZ34 and had flashover and ended up frying my solid state diodes. I just use valve rectification and no standby switch. No problems since.

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Old 2nd April 2008, 07:32 PM   #12
waam68 is offline waam68  United Kingdom
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Bit of a newsflash!
Amp fixed & now sounding sweet on both channels!
Big thanks to Chris (again) as I have a feeling the holes I'd cut for the input & speaker jacks were too small on my thick hammond steel chassis....poss caused some earth/shorting prob to chassis? Anyway I bored them out & measured pin voltages...found a duff one on an output valve so re did most joints....

Stage 2 will be wire up the mode switch & wire in the supp oil cap
although there is no hum at all (which is nice)

Things I've learnt on this first build are:
build it on a breadboard first (I will next time)
It takes longer than you think if you have no real knowledge but you will start to learn by doing (a little anyway)...don't give up!
I would recommend the Simple SE as a great first project (If I can build it in my probably can too), it sounds excellent & George goes the extra mile to help out.
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