Double WOPL with Squeeze Builds by TheWiffer

[WOPL Sniffer]

Thanks Lee. Oh, as I was digging out the second kit for parts, I fond the box you sent, I thought all 3 were from Joe till his 3rd box showed today.... Sorry. Ill send some money....

 

[laatsch55]

Not a problem Perry. Glad to know it made it.

 

[Northwinds]

Sometimes you have to blow shit up and repair several times to gain knowledge

The Math:

B(su) x R/E(k) = WOPL

 

[WOPL Sniffer]

I guess I'm done for a day or 3.

C2 popped on the backplane and spewed at me. I don't have a replacement at the moment so I gots to wait. I ohmed all the B+ and B- lines to ground and didn't see a problem. Maybe it was a dud. The right channel seems fine but the left is being a problem. I'll change the cap when I get one and if I have any more issues, I'll have to pull the backplane.

Grrrrrr

I was clipped on TP1 checking power, on the left board, it was dead. Turned it off and clipped onto TP1 on the right board and it was fine. Then the smoke Genie came out of the bottle..... Not my day...



Damn, I just saw the fine print that said that C1 and C2 are optional and not needed. No wonder it took off like a rocket.....

 

[laatsch55]

C1, and C2 on the backplanes?

 

[WOPL Sniffer]

Yes sir

 

[WOPL Sniffer]

Out on the margin of my BOM it says Optional, not necessary

 

[laatsch55]

They're not optional to me. They clean the hash off the power planes. They don't go unless they're in backwards. Yep, I've done that too....and the rail fuses are good? The 5 amps in the holders?

 

[WOPL Sniffer]

The fuse and the cap blew. I checked, they are in right. Stripe down toward the connector.

 

[laatsch55]

Did you check R36 on the driver board?

 

[laatsch55]

Pico fuse or rail fuse?

 

[WOPL Sniffer]

1 ohm in circuit

Rail

 

[laatsch55]

The fuse and the cap blew. I checked, they are in right. Stripe down toward the connector.

Then they got some reverse voltage...

 

[laatsch55]

1 ohm in circuit

Rail

Not definitive. Pull the little glass buggers and look....

 

[WOPL Sniffer]

On one side it's gnd on the other, neg fused

 

[laatsch55]

On the left negative rail fuse?

 

[WOPL Sniffer]

yeah, Fused_B-_1


R36 still 1 ohm without fuse, there is still stuff in circuit.

 

[WOPL Sniffer]

The right side board seems to be working.

 

[laatsch55]

The left board is where you have the dead electrolytic cap?

 

[WOPL Sniffer]

Yup, the board on the left side facing it from the front.