Arrrrrggggghhh!
OK so I replaced the zeners, checked ALL the semiconductors, compared the PCB and schematic until my eyes wouldn't take it and I fired it back up and here is what I got...
Power Supply was only at +/-15.4v
R1 6.62v
R2 6.62v
R3 5.86v
R4 -5.54v
R54 5.47v
R55 .117v
R56 .227v
R57 -5.61v
Crap! Back to the drawing board so to speak.
FRAZZLED
P.S. I never thought my signature would P|$$ me off so much.
OK so I replaced the zeners, checked ALL the semiconductors, compared the PCB and schematic until my eyes wouldn't take it and I fired it back up and here is what I got...
Power Supply was only at +/-15.4v
R1 6.62v
R2 6.62v
R3 5.86v
R4 -5.54v
R54 5.47v
R55 .117v
R56 .227v
R57 -5.61v
Crap! Back to the drawing board so to speak.
FRAZZLED
P.S. I never thought my signature would P|$$ me off so much.
OK
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
The problem is trying to populate parts when the silkscreen
doesn't match the new AV800 document
Translating the mess is confusing.
I think you have to trace the signals on the pcb and match it up
to the schematic as best you can.
My AV800 pcb is also dated 2001 so we must have the same
boards.
Use the older AV800 document, not the new.
R32 on the pcb requires a 10 ohm resistor.
Double check those Q1, Q2 resistors orientation of ECB.
Is Q8 installed for pre-flight test or not ?
doesn't match the new AV800 document
Translating the mess is confusing.
I think you have to trace the signals on the pcb and match it up
to the schematic as best you can.
My AV800 pcb is also dated 2001 so we must have the same
boards.
Use the older AV800 document, not the new.
R32 on the pcb requires a 10 ohm resistor.
Double check those Q1, Q2 resistors orientation of ECB.
Is Q8 installed for pre-flight test or not ?
I took a high res. scan of the silkscreen before I started populating the board, for reference, but I'll be damned if I can remember which CD I burned it to. I am going to try and dig it up. 
Just as a curious side note,
the last time Anthony posted something on DIY was 02-26-2004 07:23 PM but the last time he was here looking around was 07-20-2004 09:57 PM (30 days ago)
I just wish I knew why he wouldn't like to jump into a thread like this and help out, it's his baby, nobody knows the amp like he does, I paid good $$ for these boards, I spent considerably more buying all the parts, I intended to spend further riches building a nice case for the amp, I have a lot of time and money invested in this project and I feel it could all come together nicely with just a bit of info and help from Anthony. It is all so disappointing.
Just as a curious side note,
the last time Anthony posted something on DIY was 02-26-2004 07:23 PM but the last time he was here looking around was 07-20-2004 09:57 PM (30 days ago)I just wish I knew why he wouldn't like to jump into a thread like this and help out, it's his baby, nobody knows the amp like he does, I paid good $$ for these boards, I spent considerably more buying all the parts, I intended to spend further riches building a nice case for the amp, I have a lot of time and money invested in this project and I feel it could all come together nicely with just a bit of info and help from Anthony. It is all so disappointing.
I haven't built my AV800 so you have more experience than me,
but the pre-flight test says not to install Q8.
I was looking at my pcb layout and guess what? I also goofed
on Q1 and Q2, ECB orientation... doh... and I forgot to install that 10
ohm resistor.
Did you twist the ECB leads on the transistor so they fit in
the appropriate holes on the pcb?
Based on my experience with electronics, anytime I goofed
in the installation of parts, sometimes the parts get damaged
so when you connect them up correctly, it doesn't work and
it confuses you more.
If you feel confident that everthing is cool, then I would work
backwards and remove all semiconductors and check them
with a meter to make sure they are fully functional. Sometimes
when you check in circuit you get erroneous readings.
but the pre-flight test says not to install Q8.
I was looking at my pcb layout and guess what? I also goofed
on Q1 and Q2, ECB orientation... doh... and I forgot to install that 10
ohm resistor.
Did you twist the ECB leads on the transistor so they fit in
the appropriate holes on the pcb?
Based on my experience with electronics, anytime I goofed
in the installation of parts, sometimes the parts get damaged
so when you connect them up correctly, it doesn't work and
it confuses you more.
If you feel confident that everthing is cool, then I would work
backwards and remove all semiconductors and check them
with a meter to make sure they are fully functional. Sometimes
when you check in circuit you get erroneous readings.
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