The Amp Garage

That's about all you can hope for, especially when measuring small pf caps. From the spec sheet in your link... "Specifications do not include errors due to test lead capacitance and capacitance floor (may be up to 1.5 nF in the 40 nF range)." "Accuracy specifications take the form of: ±(% of Readi...

I just got a Fluke 15b+ as it claims it reads capacitance down to .01nf (10pf) That's why I bought it to have a meter that will do everything. Well it doesn't measure any where near accurate in the lower capacitances. 330pf 5% cap reads like .67nf Twice the capacitance. a 4700pf 5% measures 5600pf. ...

The yellow Mallory cap is in the wrong spot.

Needs to couple v1 to v2. You have it placed between V1/A V2/B plates.

Check the schematic and go over the whole amp.

Why delete the thread?
would be nice to know if you have solved the problem ?

What brand of silver micas were you fellas having trouble with? The black, generic, cheap sub 1$ ones we find at all the amp building sites?

Each channel has its own path to the PI. You could try and disconnect the tone stack from the PI entrance to see if the bleed is through the PI. I vaguely remember having a similar issue with a 18 watt Marshall. Same typical design as the Vox with the PI and I think a 100ohm resistor to ground from ...

Glue is absolutely fine if the chassis is 2" tall with a bottom plate just like Ken did them. Spargue atom caps fit perfectly. Once they are glued and soldered in with solid core wire theres no way they will become a safty hazard IMO.

They still make them under the Eletroswitch brand as they bought this switch from Stackpole.

The Bom in the Trainwreck files has the part number sold at mouser but it is incorret. The accurate part Electroswich # is C4D0206N-A, A 6 position, 1 deck, 2 pole switch

Your wanting to go here to forum member RJs site. Has all the stuff any Wreck nut could want.

http://www.rjguitars.net/

Rooster still has the original Mallory PVC signal caps in the member classifieds too.

No relays and about 35 watts. I would recomend a attenuator...

Ok finally got the replacement RS output. Smoke didn't come from the secondary's but from the shrink wrapped extra primary taps... Must have done a poor job at isolating them :oops: . This output has taps for 6k6,8k,9k and ultra linier taps. I used the green pair for 6k6. I'm assuming they simply sh...

How about adding the Blackstar ISF? Very complex circuit.

Claim's it goes Amerian to British by adjusting it. It works well but would love to see what its doing.

I do wish because I'm not going to dismantle the output until I get the replacement.
I took photos of the wires after I soldered them and the joints were solid before I shrink wrapped them.

So RG it sounds like you are convinced the weavings are the culprit and not a reverse primarys?

Yes the multi-interleaved sections that needed to be connected for 16 ohm are correct. I guess I should have hooked up or rigged up a test with alligator clips and measure resistance between setup for 4 8 and 16 ohms. But that was too much work. Lesson learned on that. Still the amp did produce soun...

Yes new build. Voltages and everything else checked out before plugging in. Triple check everything before power up. I did take off the end bells and drill new mounting holes. Maybe it shorted somehow on the reinstall but haven't gotten that far in diagnostics. Have ordered a new transformer for the...

Ok, so my biggest and really only serious amp issue I've ever had. Smoke and gunk came out the secondary's. Transformer is a RS Deluxe clone and can only be hooked up for one ohm (16 ohm in this case) at a time due to the multi interweaving windings. Anyways, powered on it was quiet, maybe too quiet...