Resurrected a Customized WOPL 400

[laatsch55]

The Rev E mod 1 left out Q2, ( the TO-92 right below Q1, the other Q1 is the TO-220 in the low voltage power supply section where D80, D81 are.

 

[jbeckva]

The Rev E mod 1 left out Q2, ( the TO-92 right below Q1, the other Q1 is the TO-220 in the low voltage power supply section where D80, D81 are.

Ahh.. Q2 I meant lol.. hmmmm.. no Q7 and no D82/83?

 

[laatsch55]

Q7 is a MUST HAVE, I haven't heard about D82, or D83 being eliminated...

 

[WOPL Sniffer]

Yup, strange. Out of 3 dozen 700 WOPL builds, never had missing parts. NEVER

 

[WOPL Sniffer]

Q7 is a MUST HAVE, I haven't heard about D82, or D83 being eliminated...

Correct sir. Just finished building 2 kits.

 

[scottonnob]

I have searched my shop, top to bottom, and I can't find either Q7 or D82 & 83.

 

[laatsch55]

So D82, D83 are no more?

 

[scottonnob]

And none of this really matters to me. From my experience with Joe, I have to believe I screwed up somehow. What I really want to know is, what do I need? Is it just the Q7s that are missing? Or do I need the D82 & 83? I'll just order them myself. No problem. I just want to make sure I have everything I need and that I'm not going to be installing anything that shouldn't be in there.

 

[scottonnob]

I just read the diode with a magnifying glass. It's a 4149.

 

[WOPL Sniffer]

Do you have the BOM for the Control board? You should... You should have it next to you when building these boards. It tells you what you need to populate for FULL COMP and QUASI COMP. I use
directions for this stuff for every build. I have the BOM if you would like it.

 

[scottonnob]

Okay: Update — My girlfriend needed to use a charger and plugged it into the power strip on the bench. In doing so, her charger pushed the bag with D82 & D83 back under the power strip. So that mystery solved. My dilemma now are the two transistors. I'm inclined to just order two more and relax. My only other concern is to make sure the rest of the board is as it should be. I wish there was a photograph of a completed board of my series. Now I'm spooked. Also, is there supposed to be a 4149 in there somewhere? If so, it's sitting on my bench wondering where to go. Or is a 4149 sometimes used as a substitute for the 4148, which would solve the mystery.

 

[laatsch55]

Must be a smudged 4148, there has never been a 4149 on that board. What do you have in the Q2 designation?

 

[WOPL Sniffer]

There are 2 Q-2's on the board, one for the left and right channel (which should NOT be populated) and one for the Voltage Regulator in the center of the board.

 

[scottonnob]

Must be a smudged 4148, there has never been a 4149 on that board. What do you have in the Q2 designation?

Q2 is MJE15033G. Must be a smudge on the 4148.

 

[WOPL Sniffer]

unless of course he built this board a while ago

 

[WOPL Sniffer]

Either or, smudge or no smudge
[TABLE="width: 540"]
<tbody>[TR]
[TD="colspan: 4"] Diodes
[/TD]
[/TR]
[TR]
[TD="width: 25%"]512-1N4148

[/TD]
[TD="width: 25%"]22

[/TD]
[TD="width: 25%"]1N4148 or1N4149

[/TD]
[TD="width: 25%"]D1L, D1R, D2L, D2R, D5L, D5R, D6L, D6R, D7L, D7R, D8L, D8R, D9L, D9R, D10L, D10R, D11L, D11R, D12L, D12R, D13L, D13R

[/TD]
[/TR]
</tbody>[/TABLE]

 

[laatsch55]

AS Perry said, there are 2---Q2's and a Q2 in the middle of the board, what are the TO-92 Q2's right below Q1?

 

[scottonnob]

There are 2 Q-2's on the board, one for the left and right channel (which should NOT be populated) and one for the Voltage Regulator in the center of the board.

I populated my Q2L and Q2R with MPS651s. Are those supposed to be in Q7L and Q7R?

 

[WOPL Sniffer]

I populated my Q2L and Q2R with MPS651s. Are those supposed to be in Q7L and Q7R?

Give me your email, I'll send you the bom. YOU NEED IT

 

[WOPL Sniffer]

[TABLE="width: 1001"]

<tbody>[TR]
[TD="width: 14%"]
512-MPSA93863-MPSA92G
[/TD]

[TD="width: 14%, colspan: 2"]
2
[/TD]

[TD="width: 14%, colspan: 2"]
MPSA93 orMPSA92 - PNP
[/TD]

[TD="width: 14%, colspan: 2"]
Q1L, Q1R
[/TD]

[TD="width: 14%, colspan: 2"]
Fairchild or ON Semi
[/TD]

[TD="width: 14%, colspan: 2"]
Mouser
[/TD]

[TD="width: 14%"]
See orientation notes below based on transistor type.
[/TD]

[/TR]

[TR]
[TD="width: 17%, colspan: 2"]
863-MPSA42RL1G
[/TD]

[TD="width: 17%, colspan: 2"]
6
[/TD]

[TD="width: 17%, colspan: 2"]
MPSA42 - NPN
[/TD]

[TD="width: 17%, colspan: 2"]
Q3L, Q3R, Q4L, Q4R, Q5L, Q5R
[/TD]

[TD="width: 17%, colspan: 2"]
ON Semi
[/TD]

[TD="width: 17%, colspan: 2"]
Mouser
[/TD]

[/TR]

[TR]
[TD="width: 17%, colspan: 2"]
863-MPS651RLRAG
[/TD]

[TD="width: 17%, colspan: 2"]
2
[/TD]

[TD="width: 17%, colspan: 2"]
MPS651 - NPN
[/TD]

[TD="width: 17%, colspan: 2"]
Q7L, Q7R
[/TD]

[TD="width: 17%, colspan: 2"]
ON Semi
[/TD]

[TD="width: 17%, colspan: 2"]
Mouser
[/TD]

[/TR]

[TR]
[TD="width: 17%, colspan: 2"]
863-MPS751RLRAG
[/TD]

[TD="width: 17%, colspan: 2"]
2
[/TD]

[TD="width: 17%, colspan: 2"]
MPS751 - PNP
[/TD]

[TD="width: 17%, colspan: 2"]
Q8L, Q8R
[/TD]

[TD="width: 17%, colspan: 2"]
ON Semi
[/TD]

[TD="width: 17%, colspan: 2"]
Mouser
[/TD]

[/TR]

[TR]
[TD="width: 17%, colspan: 2"]
863-MJE15034G
[/TD]

[TD="width: 17%, colspan: 2"]
2
[/TD]

[TD="width: 17%, colspan: 2"]
MJE15034 NPN 350V 4A
[/TD]

[TD="width: 17%, colspan: 2"]
Q6L, Q6R
[/TD]

[TD="width: 17%, colspan: 2"]
ON Semi
[/TD]

[TD="width: 17%, colspan: 2"]
Mouser
[/TD]

[/TR]

[TR]
[TD="width: 17%, colspan: 2"]
863-MJE15035G
[/TD]

[TD="width: 17%, colspan: 2"]
2
[/TD]

[TD="width: 17%, colspan: 2"]
MJE15035 PNP 350V 4A
[/TD]

[TD="width: 17%, colspan: 2"]
Q9L, Q9R
[/TD]

[TD="width: 17%, colspan: 2"]
ON Semi
[/TD]

[TD="width: 17%, colspan: 2"]
Mouser
[/TD]

[/TR]

[TR]
[TD="width: 17%, colspan: 2"]
863-MJE15032G
[/TD]

[TD="width: 17%, colspan: 2"]
1
[/TD]

[TD="width: 17%, colspan: 2"]
MJE15032 NPN 250V 8A
[/TD]

[TD="width: 17%, colspan: 2"]
Q1
[/TD]

[TD="width: 17%, colspan: 2"]
ON Semi
[/TD]

[TD="width: 17%, colspan: 2"]
Mouser
[/TD]

[/TR]

[TR]
[TD="width: 33%, colspan: 4"]
863-MJE15033G
[/TD]

[TD="width: 33%, colspan: 4"]
1
[/TD]

[TD="width: 33%, colspan: 4"]
MJE15033 PNP 250V 8A
[/TD]

[/TR]

</tbody>[/TABLE]