Marshall 3315 missing parts???

PM me ill gladly help you with a curriculum of study to help you along, and answer questions.


your in new territory and familiarity with what your doing is paramount to getting a result and keeping you safe! if unsure or unclear please ask, i don't know what you know and am maybe not providing the right guidance for you?
 
I figured it out. THE bulb was bad. no flow, no work. So the readings I got are close to what you said. Now the Volts ac starts off in auto mode which gave on Bl/yellow #1=31.25 v. Bl/yellow #2= 31.24 both yellows=62.40
Now when I switch to manual mode it starts in .00, next setting .0, next setting 00. You follow? From hundredths to tenths to whole numbers. So when I get the whole numbers it was yellow #1=32, yellow #2=32, both=63
Close, but is it cigar worthy?
Now du I do the same test with the 100 wt bulb.
Oh and the bulb was dimly lit and consistent.
 
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It’s normal for multimeters to count with nothing attached. I believe they’re picking up RF fluctuations in the wire leads. That itself doesn’t mean something is wrong with your meter.

Thank you. I had started the return process(and found another for $60 cheaper) I didn't think it could measure voltage out of thin air, but isn't that what Tesla was on about? I think I'll just cancel the return.

And just how does one check a meter for accuracy? I know they sell certified units for more money.
 
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PM me ill gladly help you with a curriculum of study to help you along, and answer questions.


your in new territory and familiarity with what your doing is paramount to getting a result and keeping you safe! if unsure or unclear please ask, i don't know what you know and am maybe not providing the right guidance for you?

I think you are doing a good job by giving just what is needed and that makes me look up things that I'm not sure about. Then if I still don't get it, I can ask.
 
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well you have a working transformer, that's good so we can move on to fixing the remainder of the supply.( so have a cigar and a shot of scotch!)


although not necessary you can do the test with the 100 watt lamp, the thing to note is that there will be less of a glow to the filament, likely none, that goes to the fact that the current limit is higher with the 100w bulb.


i wouldn't be too concerned about your meter's accuracy it is a Fluke after all, calibrating/ testing a meter requires lab grade standards.
 
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p-
 

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it is a high res picture, it just wont upload with that clarity. If I could email it direct you would see clearly. Unless you want a picture showing more of the board. I couldn't help burning the board when I removed those fuses the previous owner gad installed. It was like 10 gauge wire so it took a lot of heat.
 
well that depends on what you feel you can reasonably accomplish next, installing the new fuses and bridge rectifier is what i would do. and as the foil damage is going to complicate the matter a careful approach and some creative lead bending should make for a successful repair.


when i say creative lead bending i mean creating a bump in the leads so that the bridge doesn't rest against the PCB and leaving enough length so that on the bottom side there's enough to bend over creating a retainer so that it's physically held in place and allow for wire jumpers to connect to the rest of the circuit. i'll try to work up a drawn example of what i mean.