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Replacing MkIII can-cap with SDS cap board with Poseidon

PostPosted: Sun Jan 14, 2018 9:56 am
by wungun
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

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

PostPosted: Sun Jan 14, 2018 10:04 am
by wungun
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...

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

PostPosted: Sun Jan 21, 2018 6:50 pm
by cdmawolf
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.

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

PostPosted: Wed Jan 31, 2018 5:34 pm
by wungun
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.

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

PostPosted: Sat Mar 10, 2018 9:50 am
by wungun
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....

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

PostPosted: Sat Mar 31, 2018 6:25 pm
by wungun
Files for fraudulent charges with my credit card company...
Triode are deadbeats