I'm not sure what you are asking.
The resistors out of the circuit measure 9.98kohms (They are 10k resistors).
In the circuit they measure 0.0ohms- power on or off. setting DMM to ohms and placing lead to each side of resistor
The resistors out of the circuit measure 9.98kohms (They are 10k resistors).
In the circuit they measure 0.0ohms- power on or off. setting DMM to ohms and placing lead to each side of resistor
When it initially went out and was humming through the variac, it definitely seemed to have a short. I replaced stuff and thought I got it. More doubtful now. I think I will rebuild the board to be sure. No biggie. Wish i knew if it was a cold solder joint or failed part, etc. When I replaced the 10K resistors I felt like I could have damaged the board while desoldering. I'll confirm orientation of the diodes as well. I'll go ahead and order parts. Can you confirm if any PS parts are changed using the 3525 t/f for dual mono?
I really appreciate your help
Jeff
I really appreciate your help
Jeff
Just a suggestion, When you replaced parts, might you have pulled the 'via' on the pcb out with the component?
I did this once when replacing a power supply cap and created enormous 'agro' - even since, I've avoided any vias on electrolytic caps if any chance of a change.
I did this once when replacing a power supply cap and created enormous 'agro' - even since, I've avoided any vias on electrolytic caps if any chance of a change.
When it initially went out and was humming through the variac, it definitely seemed to have a short. I replaced stuff and thought I got it. More doubtful now. I think I will rebuild the board to be sure. No biggie. Wish i knew if it was a cold solder joint or failed part, etc. When I replaced the 10K resistors I felt like I could have damaged the board while desoldering. I'll confirm orientation of the diodes as well. I'll go ahead and order parts. Can you confirm if any PS parts are changed using the 3525 t/f for dual mono?
I really appreciate your help
Jeff
I really appreciate your help
Jeff
I'm not sure where you got the idea that you need different parts. If I said it, I'm not sure why without seeing the quote.
I'm guessing you mean Antek 3225? You can just use two of them, as you already have one.
I'm guessing you mean Antek 3225? You can just use two of them, as you already have one.
I don't think you did. You mentioned an "easy conversion." just wanted to make sure before I ordered stuff. I would love to avoid a second order but that rarely happens for me. I'm excited I can use my current t/f. Parts ordered.
JG
JG
Boards arrived, no problem!
Could you indicate where can I find the "build guide" and BOM - I see the boards have been designed for specific components so don't want to try substitutions
I think all the details for the Mains Line Filter are in that thread so resisted using different components there too
Patience, grasshopper ….
Could you indicate where can I find the "build guide" and BOM - I see the boards have been designed for specific components so don't want to try substitutions
I think all the details for the Mains Line Filter are in that thread so resisted using different components there too
Patience, grasshopper ….
Thanks Bill - I went back and found a message that the email hadn't been received here - I missed that - this was back in August - trying again now that the boards have arrived.
Got it - thanks - studying it now.
Sorry, sent you a few questions that might have been covered in previous threads
Sorry, sent you a few questions that might have been covered in previous threads
I've been pestering Jeremy with questions and thought maybe it'd be better to post them here to see if anyone else has come across the same/similar queries
I found those 4 electro caps (marked 80V) are all in parallel between the V+ and V- terminals and have no connection to the PG - so this means I could replace all 4 of these with a single 6800 or 10,000uF/100v cap with short connecting wires and just mount it above the pcb with a support clip, yes?
Same thing for the 2 X 50v marked caps?
The suggested transformer secondary windings are 25vac to give rail voltages about +/- 33v dc - if 30v ac sec => +/- 40v, so will need to increase 80v caps to 100 v caps?
I found those 4 electro caps (marked 80V) are all in parallel between the V+ and V- terminals and have no connection to the PG - so this means I could replace all 4 of these with a single 6800 or 10,000uF/100v cap with short connecting wires and just mount it above the pcb with a support clip, yes?
Same thing for the 2 X 50v marked caps?
The suggested transformer secondary windings are 25vac to give rail voltages about +/- 33v dc - if 30v ac sec => +/- 40v, so will need to increase 80v caps to 100 v caps?
Making the caps be on wires changes inductance, and I cannot guarantee performance like that - but yes it is possible. The capacitors that are higher voltage hold more power than you may think with the higher voltage, and more importantly save space.
Did this group buy finish?
I would like to try 4 channels of the Folsom 7293 Amp, but don't know how it would be possible.
/The Priest
I would like to try 4 channels of the Folsom 7293 Amp, but don't know how it would be possible.
/The Priest
I think i have 2 channels pcbs and 2 power supplies pcbs
I don t have time to build.. so if you want just pm me.