Amp Casulity

The 5th Annual CarverFest Sep. 9th - 19th
Mr. M-500t
(pair of) SILVER-7 TUBE AMPs
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Re: Amp Casulity

Post by Mr. M-500t » Sat Oct 01, 2011 12:49 pm

That sucks ! Now what ?

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Zoot Horn
SILVER-7 TUBE AMP
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Re: Amp Casulity

Post by Zoot Horn » Sat Oct 01, 2011 1:16 pm

I suppose I'll send it to someone who has better skills than I do.Not to be short,,just kinda frustrated with it. ](*,)

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jerryj12
TFM-6cb
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Re: Amp Casulity

Post by jerryj12 » Sat Oct 01, 2011 2:42 pm

George, gimme a call sometime maybe we can put it on the bench here.

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mbskeam
(pair of) SILVER-7t's
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Re: Amp Casulity

Post by mbskeam » Sat Oct 01, 2011 2:56 pm

do you have a multi meter?

does it get B+ 450v (big cap)

on the output tubes:
pin 9 355v
pin 7 415v
pin 3 14.53v (bias)
pin 2 V2= .002v pin 2 V3= .01v not sure why this voltage is not the same, maybe a typo???
input tubes:
pin 1,7 76v
pin 6 275v
pin 3 .359v

all these voltages are right at the tube socket pins

put heat shrink on your prob tips so that only the very end shows, you will thank your self latter on.... :-"
Mbskeam

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Zoot Horn
SILVER-7 TUBE AMP
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Joined: Thu Nov 15, 2007 7:26 pm
Location: 4th Tower of Inverness

Re: Amp Casulity

Post by Zoot Horn » Sat Oct 01, 2011 3:36 pm

Thanks Mike,, allright,,I'm going in,,,gotcha on the heat shrink

Mr. M-500t
(pair of) SILVER-7 TUBE AMPs
Posts: 6129
Joined: Fri Mar 17, 2006 10:00 pm

Re: Amp Casulity

Post by Mr. M-500t » Sat Oct 01, 2011 3:38 pm

Zoot Horn wrote:Thanks Mike,, allright,,I'm going in,,,gotcha on the heat shrink
:lol: :lol: :lol: :lol: :lol:

Get're Done Boys ! [-o< [-o< [-o<

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radioeng2
SILVER-7 TUBE AMP
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Re: Amp Casulity

Post by radioeng2 » Sat Oct 01, 2011 5:07 pm

To add my readings....

While set to 120vac input....

Outputs...
Pin #9 - 384vdc
Pin #7 - 437vdc
Pin #3 - 13.6vdc

Inputs....
Pin #1 &7 - 87vdc
Pin #6 - 294vdc
Pin #3 - .39vdc

All readings with no audio drive, inputs not shorted, outputs loaded by 8 ohms.

One additional is the voltage across the screen dropping resistor (the big blue one) is 56vdc. This amount of drop indicated the total screen draw for all 4 output tubes.

My filament voltage at the transformer output (at the terminal strip) is 6.4vac.

Mark
I was there "At the Fest!" Hope you were too!

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tinpan
TFM-45
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Re: Amp Casulity

Post by tinpan » Sat Oct 01, 2011 7:07 pm

We're pulling for ya Zoot. I hope you can get it sorted out.
Tinpan

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