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jcr1234
 Post subject: Help--Very low volume!!
PostPosted: Sat May 23, 2009 12:09 pm 
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It works, but the volume is VERY low. Like less than 1 watt. Any Ideas?
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coco
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PostPosted: Sat May 23, 2009 12:16 pm 
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Start by checking all the voltages & see how they compare to the posted / dcoument ones. Post them here if you can.

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jcr1234
 Post subject:
PostPosted: Sat May 23, 2009 12:20 pm 
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When I check the voltages, do I ground the meter to chassis ground even though Im checking vdc?
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coco
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PostPosted: Sat May 23, 2009 12:23 pm 
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For DC voltages on the tubes, board - Yes. For AC only sometimes.

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jcr1234
 Post subject:
PostPosted: Sat May 23, 2009 12:59 pm 
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I can t get a reading on pin 6 of v2. Any suggestions?
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Stoo
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PostPosted: Sat May 23, 2009 1:06 pm 
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How about on the turret board on the + side of the 16uf cap? Or on the pot side of the 2k2 2watt?
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jcr1234
 Post subject:
PostPosted: Sat May 23, 2009 1:08 pm 
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Nothing on the cap, and 5.0 on the pot side of the 2.2
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Stoo
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PostPosted: Sat May 23, 2009 1:10 pm 
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But you had good readings on pin1&6 on V1??
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coco
 Post subject:
PostPosted: Sat May 23, 2009 1:11 pm 
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Is the jumper underneath, in the right place? Check back for continuity.

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jcr1234
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PostPosted: Sat May 23, 2009 1:12 pm 
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Correction, nothing on the 2.2. if I keep the probe on it as it powers up the voltage rises, but then it cuts out and wont give me a reading
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jcr1234
 Post subject:
PostPosted: Sat May 23, 2009 1:15 pm 
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on pins 1 & 6 of v1 I get 133
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Stoo
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PostPosted: Sat May 23, 2009 1:16 pm 
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Coco is probably right.There's a jumper underneath the board that brings the high DC voltage from the o/p end of the board. It's the dashed line on the color layout print.
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jcr1234
 Post subject:
PostPosted: Sat May 23, 2009 1:20 pm 
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there is continuity between those two points
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Stoo
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PostPosted: Sat May 23, 2009 1:20 pm 
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Well V1 get's it's plate voltage (1&6) from the + side of that cap I asked about. :?:
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Stoo
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PostPosted: Sat May 23, 2009 1:22 pm 
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Sorry JCR ..I gotta run (breakfast with the girl friend ;-)) Best Of luck. I'm sure Coco will chime in.
Stew
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jcr1234
 Post subject:
PostPosted: Sat May 23, 2009 1:28 pm 
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Correction, Im getting 237 on the + side of the 16uf cap
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jcr1234
 Post subject:
PostPosted: Sat May 23, 2009 1:38 pm 
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Im getting .27 on the point where the .022uf cap and the 470k resistor meet on the tube side of the board just to the left of the 2.2k 2w.
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coco
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PostPosted: Sat May 23, 2009 2:16 pm 
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Is your 56K resistor grounded to the buss bar?

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coco
 Post subject:
PostPosted: Sat May 23, 2009 2:41 pm 
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and is the jumper on v3 pin 8 to 3 ?

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jcr1234
 Post subject:
PostPosted: Sat May 23, 2009 2:59 pm 
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Yes to both
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