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26th December 2012, 06:06 PM
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#1283 |
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diyAudio Member
Join Date: Nov 2007
Location: athens
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dmm at DCmV with probes touching = zero ..
removed the teflon cap, no difference ... still variable indication at the DCmV position .. guess I have to recheck the rca's/pot grounding scheme ... which is pretty much as the one at post #1064 Last edited by DimZ; 26th December 2012 at 06:10 PM. |
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26th December 2012, 06:20 PM
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#1284 |
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diyAudio Chief Moderator
Join Date: Oct 2002
Location: Athens-Greece
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Some DC settling during first minutes reflecting to the output caps when not connected to lower load as a main amp probably. Mine does the same. No worries I guess. Watch it over a 50 to 100K pseudo output load simulating an amp over 15 mins.
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26th December 2012, 06:29 PM
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#1286 |
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diyAudio Chief Moderator
Join Date: Oct 2002
Location: Athens-Greece
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It would take a scope to make sure there is no waveform, but the norm is to go up and then go low over some minutes if it is just reflecting a DC drift as the various circuit blocks and supply warm up and settle.
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26th December 2012, 06:35 PM
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#1288 |
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diyAudio Chief Moderator
Join Date: Oct 2002
Location: Athens-Greece
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I am not easily worried there is much chance its about something peculiar, its a non loop feedback very simple circuit to do particular funnies. With electronics and various layouts you never know on the other hand, but no, slim chance.
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26th December 2012, 06:48 PM
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#1289 |
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diyAudio Member
Join Date: Nov 2007
Location: athens
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oops .....
it seems that when I changed the sockets and resoldered the parts yesterday I took the output before the 5k anode reistor and not after ...  will fix that tomorrow ... Last edited by DimZ; 26th December 2012 at 06:51 PM. |
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