Getting ready to do wopl 400 build

laatsch55

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A little, output power is pretty much determined by rail voltage....new power caps will certainly help the bass section...
 
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Well all the amp has been running flawlessly for 4 or 5 days now... Don's protection board got here today and I installed it he sent it fully built but I read the zobal net had to be removed from it so I removed R1, R2, C8, and C9 then connected the wires as follows... J1-1 left channel output, J1-3 left ground, J2-1 right channel output, J2- 3 right channel ground, J3-1 DC input I ran this from fused B+ out from the right plane board, J3-2 ground, J3-3 AC input I ran this from the rectifier over at the transformer, all grounds run off the bus bar at the power caps....

On my speaker outputs I am getting .0049 on the right side and .0049 on the left side but no output (sound) out of speakers when connected to preamp and tuner

I have read that when power is turned on that people here the relay click in I have not heard the relay kick in...

Edit... I have 84v DC at J3-1 and 84v AC at J3-3 is there a way to jump the relay??? I'm thinking the problem has something to do with the relay not kicking in for some reason.

Another edit... looks like if I put a jumper wire from pin 1 to 3 and pin 2 to 4 it would jump the relay?? Not seeing any voltage on the relay socket for pins 7 and 8... am I supposed to have jumpers in the components I removed for the zobal R1, R2, C8, C9??
 
Last edited:
Northwinds

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I wish I had an answer for you Ray but I am no tech. I am sure Joe, Lee or someone will be along to get you pointed in the right direction

Soon Roccus will be roccin' with no worries
 
roccus

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Was rockin for several days with it already!!! I know it is going to b something simple just ran out of time today hope to get it up running and all hooked up to my main system by tomorrow :compress:

Northwinds said:
I wish I had an answer for you Ray but I am no tech. I am sure Joe, Lee or someone will be along to get you pointed in the right direction

Soon Roccus will be roccin' with no worries
Click to expand...
 
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roccus said:
Well all the amp has been running flawlessly for 4 or 5 days now... Don's protection board got here today and I installed it he sent it fully built but I read the zobal net had to be removed from it so I removed R1, R2, C8, and C9 then connected the wires as follows... J1-1 left channel output, J1-3 left ground, J2-1 right channel output, J2- 3 right channel ground, J3-1 DC input I ran this from fused B+ out from the right plane board, J3-2 ground, J3-3 AC input I ran this from the rectifier over at the transformer, all grounds run off the bus bar at the power caps....

On my speaker outputs I am getting .0049 on the right side and .0049 on the left side but no output (sound) out of speakers when connected to preamp and tuner

I have read that when power is turned on that people here the relay click in I have not heard the relay kick in...

Edit... I have 84v DC at J3-1 and 84v AC at J3-3 is there a way to jump the relay??? I'm thinking the problem has something to do with the relay not kicking in for some reason.

Another edit... looks like if I put a jumper wire from pin 1 to 3 and pin 2 to 4 it would jump the relay?? Not seeing any voltage on the relay socket for pins 7 and 8... am I supposed to have jumpers in the components I removed for the zobal R1, R2, C8, C9??
Click to expand...
You should definitely have a click from the DCP when energizing. We'll have to wait till Lee or ??? chimes in.
 
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WOPL Sniffer

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Strange though that you have 84VAC and 84VDC on those 2 pins. Below is what you should have on the 400 board.

J1-1 0VDC +/- 50mv
J1-2 No connection
J1-3 0VDC, 0 ohms
J2-1 0VDC +/- 50mv
J2-2 No connection
J2-3 0VDC, 0 ohms
J3-1 70-80 VDC
J3-2 0VDC, 0 ohms
J3-3 55-60 VAC
 
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All my readings are close to your specs except J3-3 hmm As far as the 84v AC that voltage is what this build turned out to be Joe and Lee seemed to think that is ok but J3-3 20v off that seems a bit much that is coming off the rectifier if that voltage is that far off wouldn't that effect other AC voltages in the backplanes and control board?? I posted all my readings and was told everything is "spot on"

All seemed to run well without the protection board the amp sounded great I had tacked the speaker output wires to the old terminals and ran it like that 24 hours a day for 4 or 5 days before I got Don's board but there is no power going into the breaker for some reason why I am wondering if there are supposed to be jumpers or something in the slots I tool the resistors and caps out from
I got docs on how to wire and install the board but no docs on how it was to be built so I got my info on removing those components off of nelson build thread

WOPL Sniffer said:
Strange though that you have 84VAC and 84VDC on those 2 pins. Below is what you should have on the 400 board.

J1-1 0VDC +/- 50mv
J1-2 No connection
J1-3 0VDC, 0 ohms
J2-1 0VDC +/- 50mv
J2-2 No connection
J2-3 0VDC, 0 ohms
J3-1 70-80 VDC
J3-2 0VDC, 0 ohms
J3-3 55-60 VAC
Click to expand...
 
laatsch55

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No, the components you removed that were the Zoebel network do not need jumpered. The AC feed coming from the AC side of the rectifier should be in the 50-60- volt range. If you have all the correct measurements, I need a pic of the component side of the DCP, close up enough that I can identify the components on the board, not the part numbers, but so I can see what is where....
 
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roccus said:
All my readings are close to your specs except J3-3 hmm As far as the 84v AC that voltage is what this build turned out to be Joe and Lee seemed to think that is ok but J3-3 20v off that seems a bit much that is coming off the rectifier if that voltage is that far off wouldn't that effect other AC voltages in the backplanes and control board?? I posted all my readings and was told everything is "spot on"

All seemed to run well without the protection board the amp sounded great I had tacked the speaker output wires to the old terminals and ran it like that 24 hours a day for 4 or 5 days before I got Don's board but there is no power going into the breaker for some reason why I am wondering if there are supposed to be jumpers or something in the slots I tool the resistors and caps out from
I got docs on how to wire and install the board but no docs on how it was to be built so I got my info on removing those components off of nelson build thread
Click to expand...
84 volts DC +/- are the rail voltage. This should appear on J3-1 ONLY......andf only as DC+....
 
laatsch55

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roccus said:
Well all the amp has been running flawlessly for 4 or 5 days now... Don's protection board got here today and I installed it he sent it fully built but I read the zobal net had to be removed from it so I removed R1, R2, C8, and C9 then connected the wires as follows... J1-1 left channel output, J1-3 left ground, J2-1 right channel output, J2- 3 right channel ground, J3-1 DC input I ran this from fused B+ out from the right plane board, J3-2 ground, J3-3 AC input I ran this from the rectifier over at the transformer, all grounds run off the bus bar at the power caps....

On my speaker outputs I am getting .0049 on the right side and .0049 on the left side but no output (sound) out of speakers when connected to preamp and tuner

I have read that when power is turned on that people here the relay click in I have not heard the relay kick in...

Edit... I have 84v DC at J3-1 and 84v AC at J3-3 is there a way to jump the relay??? I'm thinking the problem has something to do with the relay not kicking in for some reason.

Another edit... looks like if I put a jumper wire from pin 1 to 3 and pin 2 to 4 it would jump the relay?? Not seeing any voltage on the relay socket for pins 7 and 8... am I supposed to have jumpers in the components I removed for the zobal R1, R2, C8, C9??
Click to expand...
The only way you can have 84volts is on the DC side of the rectifier....
 
laatsch55

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roccus said:
Well all the amp has been running flawlessly for 4 or 5 days now... Don's protection board got here today and I installed it he sent it fully built but I read the zobal net had to be removed from it so I removed R1, R2, C8, and C9 then connected the wires as follows... J1-1 left channel output, J1-3 left ground, J2-1 right channel output, J2- 3 right channel ground, J3-1 DC input I ran this from fused B+ out from the right plane board, J3-2 ground, J3-3 AC input I ran this from the rectifier over at the transformer, all grounds run off the bus bar at the power caps....

On my speaker outputs I am getting .0049 on the right side and .0049 on the left side but no output (sound) out of speakers when connected to preamp and tuner

I have read that when power is turned on that people here the relay click in I have not heard the relay kick in...

Edit... I have 84v DC at J3-1 and 84v AC at J3-3 is there a way to jump the relay??? I'm thinking the problem has something to do with the relay not kicking in for some reason.

Another edit... looks like if I put a jumper wire from pin 1 to 3 and pin 2 to 4 it would jump the relay?? Not seeing any voltage on the relay socket for pins 7 and 8... am I supposed to have jumpers in the components I removed for the zobal R1, R2, C8, C9??
Click to expand...
If you put a jumper from pin 1 to pin 3 you will short out that channels output stage....same for 2 and 4.....
 
roccus

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I will get some pics up tomorrow... wondering if I got on one of the wrong terminals of the rectifier and why it is at 84v not 60 will look at that as well.. that could be the whole problem right there
 
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And, if you are not familiar with the Rectifiers, way easy to hook up wrong. They are not marked for ease of use unless you have seen a few.
 
roccus

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I bet that is what I did and if I understand it right the relay is doing it's job by staying open if it's getting DC voltage right?? Thanks Lee and Dennis

laatsch55 said:
If it's 84 DC , yes that would be the problem....
Click to expand...
 
roccus

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Yea my bad I should have double checked that before I attached the wire for the feed to the protection board then it was the end of the day today and I was flying around with my meter to get some readings to post for you all I may have read that as AC when it was actually DC

WOPL Sniffer said:
And, if you are not familiar with the Rectifiers, way easy to hook up wrong. They are not marked for ease of use unless you have seen a few.
Click to expand...
 
laatsch55

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roccus said:
I bet that is what I did and if I understand it right the relay is doing it's job by staying open if it's getting DC voltage right?? Thanks Lee and Dennis
Click to expand...

The relay won't click if it senses DC on the outputs, it also wont click if the IC is fed the wrong voltages....
 
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