nadude98
Journeyman
Damn, and I just got married.... tsk tsk NavLinear
WOPL 400 Build Problem!
- Thread starter nadude98
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Yep, and now it's tme to check the resistors on the BACKPLANES.......
nadude98
Journeyman
I meant to say:
Yes, and I also checked the resistors that Joe had me check on the 14_20. I have checked and rechecked the backplanes.....
nadude98
Journeyman
I meant to say:
Yes, and I also checked the resistors that Joe had me check on the 14_20. I have checked and rechecked the backplanes.....
I just quadruple checked.... all test at correct resistance!
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Now is when a scope would be handy....
Northwinds
Veteran and General Yakker
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nadude98
Journeyman
nadude98
Journeyman
Bump
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We haven't forgot ya...have you reversed the cables coming from the pre amp to make sure it's not the pre?? It might be a good idea to check for DC on the pre amp outputs.
Billboard
Journeyman
No expert... but may want to look at post 103, and post 110 again. How much should the rail DC drop on heavy base?
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A wounded output can do that too....
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Is that a White Oak cap kit??
nadude98
Journeyman
Yep, a very old one..... I think I put it in over 5 years ago. However the years do seem to blur together. Also have the White Oak led kit, from about the same time period.
nadude98
Journeyman
Nope, I tested the preamp on my Carver amp and it sounds fine.
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Do you have a PL service manual? If you do read the part on " Current Sharing test". WE can root out a leaky output with that test, without a scope...
nadude98
Journeyman
Ok, I was reading it. I have a couple of load resistors but they are only 10 watt IIRC. Next I am supposed to drive the channel with 200 Hz input to achieve 40v rms. I don't have a signal generator. How should I go about doing that, and will my load resistors suffice?
I never mentioned this but there is a little bit of a turnoff or turnon thump? I think it's left channel. I will have to check that again. Never really paid attention because it had always had that.
Been distracting myself with a Pioneer A60 amp I'm restoring for the living room...
Last edited:
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No, 10 watts won't get ya off the porch........I use to get my homebuilt 200 watters pretty hot during this test.....
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No pics on the A60 restore?????
Turn on/off thump was history with the Rev "C" board, you definitely have a problem......
nadude98
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As you can see now, you don't need much for test equipment until you have a problem......especially when it's frequency or power dependent.....