Replacing MkIII can-cap with SDS cap board with Poseidon

for Dynaco Mark II/III/IV and DIY PP monoblocks

Replacing MkIII can-cap with SDS cap board with Poseidon

Postby wungun » Sun Jan 14, 2018 9:56 am

It's been forever since I added the excellent Poseidon board to my MkIII's...
I've been running upgrade original style can caps on both my blocks...until recently, one of the sections went pop! So I want to replace these with the SDS Labs cap board...and still use the tube rectification (I think).
For me, the SDS instructions leave a bit to be desired...
For example, the B+ tranny wiring...is the red wire? The center tap is the black wire from the transformer?
The cathode on rec tube...pin 8 I'm assuming?
The two wires to the choke are pretty obvious...

Now, the two connections labelled pin 6 and 5 obviously go to the Poseidon...without having the amps in front of me, are the Poseidon boards labelled the same way...? Pins 5 and 6?
TIA
wungun
 
Posts: 26
Joined: Wed Jun 24, 2015 5:43 pm

Re: Replacing MkIII can-cap with SDS cap board with Poseidon

Postby wungun » Sun Jan 14, 2018 10:04 am

Just saw the note on the Poseidon manual...pins 6&5 to J&K...

So now, pin C to quad cap star ground...should I still use the location as star ground or find another point on the chassis for the star?

Also the grounding on the SDS board...? Seems like the mounting bolts are isolated from the ground plane on the PCB. Does the PCB need to be connected to the star ground? Instructions, again, seem a bit lacking...
wungun
 
Posts: 26
Joined: Wed Jun 24, 2015 5:43 pm

Re: Replacing MkIII can-cap with SDS cap board with Poseidon

Postby cdmawolf » Sun Jan 21, 2018 6:50 pm

The side standoff mount opposite of the connections is the ground for the SDS PCB.
ONLY hook up to the B+ hole IF you are using diode rectification on board.
Use the "cathode of 5AR4 when using the tube rectifier.
cdmawolf
 
Posts: 37
Joined: Thu Nov 29, 2012 3:07 am

Re: Replacing MkIII can-cap with SDS cap board with Poseidon

Postby wungun » Wed Jan 31, 2018 5:34 pm

Thanks for the reply....
Yes, I plan on using tube rectification.

cdmawolf wrote:The side standoff mount opposite of the connections is the ground for the SDS PCB.
ONLY hook up to the B+ hole IF you are using diode rectification on board.
Use the "cathode of 5AR4 when using the tube rectifier.
wungun
 
Posts: 26
Joined: Wed Jun 24, 2015 5:43 pm

Re: Replacing MkIII can-cap with SDS cap board with Poseidon

Postby wungun » Sat Mar 10, 2018 9:50 am

Anyone have any recent dealings with Triode USA??
I ordered the boards WEEKS ago...then I find out they had no stock and had to do another production run...
And then I ask for status/order updates, and I either get no response, or they just change the "Shipping" status for 4-6 weeks, to 2-4 weeks, then 4-7 days, etc...
I knew I should of went with the OTHER boards...
I told them I want to know when it'll ship or I want a refund...and/or I'm reported them to my credit card company for fraudulent sales practices....
wungun
 
Posts: 26
Joined: Wed Jun 24, 2015 5:43 pm

Re: Replacing MkIII can-cap with SDS cap board with Poseidon

Postby wungun » Sat Mar 31, 2018 6:25 pm

Files for fraudulent charges with my credit card company...
Triode are deadbeats
wungun
 
Posts: 26
Joined: Wed Jun 24, 2015 5:43 pm


Return to poseidon

Who is online

Users browsing this forum: No registered users and 1 guest

cron