Trouble with my Paramounts [resolved]

patm · 4170

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Offline Paul Birkeland

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Reply #15 on: February 02, 2016, 08:21:08 AM
Check your jumper that's Kreg to Breg.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline patm

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Reply #16 on: February 02, 2016, 08:44:51 AM
I get 8.3vdc at breg (Kreg to breg A side) I just noticed the LEDs are not lit on B side.

In the beginning there was nothing, then it blew up!

FP III, Paramount 300b (Takatsuki TA-300B), both with Mundorf S/O caps, Mikes iron, HFBG Eros,Oppo 103,Rega RP6 2m black ,Vaughn Triode JR II


Offline Paul Birkeland

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Reply #17 on: February 02, 2016, 11:40:17 AM
I would just double check your work against the working amp and the manual.  A backwards TL431 could also present some strangeness like this.

Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man


Offline patm

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Reply #18 on: February 04, 2016, 05:53:32 AM
Ok, I went through all the steps and everything is installed correctly. Noticed what might be a bridge between pads IB and OB, cleaned it up with some braid. Touched up the transistor soldering and OUTSTANDING, turned on power B side led's lit. 5670 plate voltage came right in to 175vdc.

Listning to music now. Sounds wonderful as usual.

Thanks for all the help. I think it might be time to hang up my soldering iron. Some of the medication is slowing me down and my last two builds have been wrought with problems. Although, it is job security for you guys if I keep building kits.

I have arrainged for Shawn to build the Eros that I havent started yet.

Thanks again,
Ps: even if I quite building kits, I will definitely stick with BH gear.

In the beginning there was nothing, then it blew up!

FP III, Paramount 300b (Takatsuki TA-300B), both with Mundorf S/O caps, Mikes iron, HFBG Eros,Oppo 103,Rega RP6 2m black ,Vaughn Triode JR II


Offline Doc B.

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Reply #19 on: February 04, 2016, 06:40:03 AM
You are most welcome, Pat. Congrats on getting it running.

Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.