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Old 28th March 2011, 07:17 PM   #551
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Quote:
Originally Posted by 6L6 View Post
Using the extremely accurate pseudo-pscientific method of touching them and guessing, I would say that mine are in the neighborhood of 120-130F. (49-55C)

Very warm/hot to the touch, but not going to burn you, and able to touch for 5-10sec.
What size was your case again?
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Old 28th March 2011, 09:15 PM   #552
sts9fan is offline sts9fan  United States
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Ok. Here are the pictures of my PS. Be gentle...
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Old 28th March 2011, 10:39 PM   #553
sts9fan is offline sts9fan  United States
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I get a little over 16vac with a bulb which does dim over time. Then I only get 0.6vdc at the caps
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Old 28th March 2011, 10:41 PM   #554
6L6 is offline 6L6  United States
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Click the image to open in full size.

Please verify if the caps are orientated as I labeled them.

Also, are the V+ and V- labeled correctly?

Are the green wires from the rectifier blocks to the screw terminals DC positive?
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Old 28th March 2011, 10:47 PM   #555
sts9fan is offline sts9fan  United States
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That is correct. Green in positive. The caps are correct also and I have had a second set of ee eyes verify.
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Old 28th March 2011, 10:50 PM   #556
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Quote:
Originally Posted by 6L6 View Post
Using the extremely accurate pseudo-pscientific method of touching them and guessing, I would say that mine are in the neighborhood of 120-130F. (49-55C)

Very warm/hot to the touch, but not going to burn you, and able to touch for 5-10sec.
Mine are running about the same--warm to the touch, for the two CL-60's on the line side. The CL-60 common to the PSU is running a little cooler. All this, with about 0.63v across R11 and R12, for each channel.
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Old 28th March 2011, 11:08 PM   #557
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I'd recommend you disconnect your leads from the bridge rectifier outputs, and measure both the VAC into each bridge, and then the VDC (unfiltered) comming out of each bridge.

While you have those leads "open" I'd also measure the resistance across the caps for each rail (do that using the leads you disconnected from the rectifiers. (You may have some residual DC in the caps, to touch both leads together to ground the caps, before you take this resistance reading).

Is your power supply currently (no pun intended....) connected to either/both of the amp boards?
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Old 28th March 2011, 11:19 PM   #558
sts9fan is offline sts9fan  United States
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It's not connected to the amp boards. I will check out what you said.
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Old 28th March 2011, 11:35 PM   #559
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It's not connected to the amp boards. I will check out what you said.
Thanks....that may be the best way to proceed--peeling back the layers of the onion, etc.

From a scan of your pics, your wiring on the primary side of the transformer looked ok.

On other simple measurement--the resistance reading across the two AC line leads (coming into the amp chassis) should be about 6-7 ohms (for a 400 VA transformer).
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Old 28th March 2011, 11:51 PM   #560
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Are you sure each of the two secondary windings has one blue AND one green wire? (and how do you know which is which?) Have you tried with only one secondary at a time?

Last edited by Andersonix; 28th March 2011 at 11:53 PM.
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