BIG problems

laatsch55

laatsch55

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Halfbiass...Electron Herder and Backass Woof
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Are the back to back diodes going directly to a ground trace or staying strictly on C6's leads?? Also, do you have any acetone??
 
Michael F

Michael F

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laatsch55 said:
Unsolder and lift one leg of D9. Power back up and see if you still have 40v+dc . Also check rail votage. I want to see just how high it goes with the DBT you have in line...
Click to expand...
I forgot to mention, D9 was replaced in LEFT. Lifted Right channel D9 with no change.
Rail voltage +54 and -59
 
laatsch55

laatsch55

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Take the dbt out of circuit and briing the variac up to 80 volts. Then see what you have bias and DC offset.
 
Michael F

Michael F

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laatsch55 said:
Take the dbt out of circuit and briing the variac up to 80 volts. Then see what you have bias and DC offset.
Click to expand...
dbt out of circuit, rail 200R B+/B- in circuit, 80vac input= .024 on left output,+57 vdc on right.
I must sign off for the night and resume Sunday after work.
Feel free to send me more tests in the meantime.
Big thanks to Lee and Joe.
 
laatsch55

laatsch55

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I like the Transformer/robot look....


Dennis this is the same one I built last year when Joe was doing his bed of nails thing. 1 channel, one driver and output for each rail.
 
NavLinear

NavLinear

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laatsch55 said:
I like the Transformer/robot look....


Dennis this is the same one I built last year when Joe was doing his bed of nails thing. 1 channel, one driver and output for each rail.
Click to expand...
I remember the bed of nails but I don't remember your test setup - getting old sucks. Maybe she does too. :confused2::confused2::laughing9::laughing9::laughing9::confused2::confused2:
 
laatsch55

laatsch55

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More.....


Michael, can you get your hands on some acetone tomorrow?? Ya need to clean the back of that board, and in case some traces are toast, got a backup board for ya. One I swapped out when the guy went fully comp. IF customs we'll let it by....
 

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