Good ones, and look brand new btw.
The odd part is that i bought up the entire stock they said they had left, the minute i saw their ad, that was before 2010.
Need a datasheet, an image of the integrated amp they came out of, or a close-up(s) of the tranny ?
(cough, me pay less than $21, mucho less)
I emailed again asking to ensure availability and sure enough they dont have any now, despite saying they did a few days prior.
This may do the job
220V 50W R-core Transformer X-Former 45V-0 0-45V 0-25V | eBay
Split core and split windings blend-in well with your character, yer trannyness.
Serb Man you Fracture, i suppose ?
(50VA-R is 1/3d weight/size, more rational if it's a single box drop-in)
Help
I have assembled my Shunty and Pumpkin boards.
Tested the Shuntys with 400 ohm resistors. Obtained +/- 36V
Hooked up Pumpkins.
One channel works as described in the setup section.
On the second board the negative rail drops to -17V.
Any thoughts where I should begin to troubleshoot?
Thanks in advance
Best
Bob
I have assembled my Shunty and Pumpkin boards.
Tested the Shuntys with 400 ohm resistors. Obtained +/- 36V
Hooked up Pumpkins.
One channel works as described in the setup section.
On the second board the negative rail drops to -17V.
Any thoughts where I should begin to troubleshoot?
Thanks in advance
Best
Bob
pcb :
now is tricky
it seems that you can exclude possible shortie on pcb , because you measured 10K from neg leg to gnd ;
so - reason must be that some part is conducting excessive current when power is applied .
do this : dismantle heatsink , power up and observe which of those 5 mosfets is excessively heating ; 4 of them must have similar temp , and Q10 must be (almost) cold ;
off course - for start you must be sure that you don't have some wrong resistor there
in any case - fiddle with diode meter here and there ( between pins of each transistor , same as between pins and gnd ) , comparing differences between working and non-working channel , and you'll localize what's wrong
it seems that you can exclude possible shortie on pcb , because you measured 10K from neg leg to gnd ;
so - reason must be that some part is conducting excessive current when power is applied .
do this : dismantle heatsink , power up and observe which of those 5 mosfets is excessively heating ; 4 of them must have similar temp , and Q10 must be (almost) cold ;
off course - for start you must be sure that you don't have some wrong resistor there
in any case - fiddle with diode meter here and there ( between pins of each transistor , same as between pins and gnd ) , comparing differences between working and non-working channel , and you'll localize what's wrong
I was measuring resistance and found on the board that works
R5=R6 =16k measured across each in circuit and
on the board that doesn't R5=R6 =100k
????
Thanks