Measured again D-S for Q6 and Q8
Good board .55V
Bad board .38V
Q10 is the same for both boards .55V
Resistance for both boards is in the*Mohm range for neg rail to ground
R5 R6 100k for the bad board and 16.6k for good board
Thanks again for all the help and of course a big thanks to Nelson and the gang for supporting DIY
Good board .55V
Bad board .38V
Q10 is the same for both boards .55V
Resistance for both boards is in the*Mohm range for neg rail to ground
R5 R6 100k for the bad board and 16.6k for good board
Thanks again for all the help and of course a big thanks to Nelson and the gang for supporting DIY
i received my components (except heatsink....) last week.
i hope to start to populate the Shunty PCB next w-e and to solder all the parts on Pumpkin. 🙂
i hope to start to populate the Shunty PCB next w-e and to solder all the parts on Pumpkin. 🙂
Choky
Me very bad !!!
The difference in resistance measurements that I mentioned across R5, R6 is because I forgot to remove shorts from pos inp to gnd and neg input to ground when I was doing DC setup Sorry !!!!!
The neg voltage still drops to 18V when connected to Pumpkin. I have measured all resistors and I have touched all solder points.
I put Q6 and Q8 back in because without them voltage still dropped. I will replace Q10.
Best
Bob
Me very bad !!!
The difference in resistance measurements that I mentioned across R5, R6 is because I forgot to remove shorts from pos inp to gnd and neg input to ground when I was doing DC setup Sorry !!!!!
The neg voltage still drops to 18V when connected to Pumpkin. I have measured all resistors and I have touched all solder points.
I put Q6 and Q8 back in because without them voltage still dropped. I will replace Q10.
Best
Bob
No I am stuck. I have pulled all transistors Q1 to Q11 and I still get the negative voltage dropping to -20V
Ideas?
The power supply with the 400 ohm resistor reads -36V
THANKS
Ideas?
The power supply with the 400 ohm resistor reads -36V
THANKS
I would be forever grateful. I don't see any solder bridges - maybe my eyes even with magnifier are too old.
THANKS!!!
THANKS!!!
Hi Flocchini,
Have you connect the input volume ? If not, please try connect it and measure again.
Many, many thanks to Nelson and Choky !!!
Nelson knows I live just a short drive away. I will keep looking but really appreciate the offer.
naah .....
just chill and find some other way to enjoy
we'll sort that right after BAF
edit :
even if I'm confused now ; I understood that I'll be dragged to Ocean , and now I see that you're ~100km from Papa's Ark
just chill and find some other way to enjoy
we'll sort that right after BAF
edit :
even if I'm confused now ; I understood that I'll be dragged to Ocean , and now I see that you're ~100km from Papa's Ark
Last edited:
I'm at the coast right now, but you can give it to Kent (Cyclotronguy) at
Pass Labs as soon as you like.
😎
I am looking to buy a "A" or "D" package since Zen Mod has some problems with his PCB supplier and I am waiting for a very long time already. If anybody has A or D for sale please let me know.
Thanks
Sven
Thanks
Sven
Waiting for my package as well
But problems somewhere else not PCB as I was given reason to believe
Hope it get sorted as realy looking forward to build one .
Yess I know I could make my own PCB but do not think it would be a fair thing to do to Zen.
So I shall be patient for a while longher and waith for my messages / prays to be answered.
But problems somewhere else not PCB as I was given reason to believe
Hope it get sorted as realy looking forward to build one .
Yess I know I could make my own PCB but do not think it would be a fair thing to do to Zen.
So I shall be patient for a while longher and waith for my messages / prays to be answered.