Another WOPL 700B buld

Gepetto

Gepetto

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Staff member
#83
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Old 'Arn Enthusiast
#83
Billboard said:
What is the order of the upper hardware. I saw the order on the BOD step 11, but did not see how to attach the boards

6-32 screw
lock wasker
chassis
lock washer
standoff
?
?
Click to expand...
The misc hardware kit contains #6 nylon washers and #6 flat washers. Use the socket head screws that came with the kit that are used for the purpose of attaching the transistors temporarily with a steel flat washer and a nylon washer in the diagonal corner of each backplane board. It only takes 2 to temporarily tack in the board to complete your wiring activities.

Understand?
 
Billboard

Billboard

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#84
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#84
Got it thanks, the backplanes are in, they look, good, secured with the top mounts and aligned using a couple of output transistor screws.

Starting on the rectifier wiring and AC wiring.

Going to leave the wires for the switch in a loop so I can bring the amp up without the faceplate.

I need to pick up some bare #10 ring terminals for the DC connections to the capacitors.

Going well, I guess I just needed to start assembly, take it slow and ask questions.
 
roccus

roccus

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You'll blow your ears out kid
#85
I have been reading through this thread... sounds like you are building a new one from scratch with a few parts from an old one??
 
Billboard

Billboard

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#87
roccus said:
I have been reading through this thread... sounds like you are building a new one from scratch with a few parts from an old one??
Click to expand...
That about sums it up. I am keeping from the original 700B

Transformer
Meters
front switches and knobs (volume, on-off, etc)
bias transistor clamps
input bypass switch
Heat sink fins
Fan AC receptical
Bulk CAPs ground bar
output covers

I think that's it, everything else will be new, sounds like I got lucky and grabbed the last new 700B faceplate also.
 
Last edited:
roccus

roccus

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You'll blow your ears out kid
#88
Well it sure will be a fine day in heaven you put music from it into your ears for first time!! :angel10:
 
Billboard

Billboard

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#89
Last edited:
orange

orange

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#90
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Broken beyond repair but highly affable
#90
Wait until you can do some proper AC/DC testing on it, and I mean Highway To Hell.
 
WOPL Sniffer

WOPL Sniffer

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#91
Billboard said:
Finished the AC and DC wiring tonight, powered up with just the main fuse and a dim bulb tester. No issues, +- 97.2 volts with dim bulb, +- 108 volts under normal conditions.

View attachment 25790 View attachment 25791 View attachment 25792


I ended up using thermostats from Amazon they are just a bit larger than the originals, they need to go onto the chassis before the back plane boards. https://www.amazon.com/gp/product/B008MU1WOS/ref=od_aui_detailpages00?ie=UTF8&psc=1
Click to expand...
What did you use for a wiring guide? I think the directions in Joes kit has the B+ (your red wire on the right backplane) should go to the left backplane B+, it keeps the big wad of wires off the Cap screw, same with the B-. Double check against Joes wiring scheme. And you gotta get some of that flux and shit off the board, It could cause you a lot of problems down the road. That's why I said in my prior post... CLEAN CLEAN CLEAN....
 
WOPL Sniffer

WOPL Sniffer

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#92
This is the right channel wiring directions.

[TABLE="width: 658"]

<tbody>[TR]
[TD="width: 20%"]
Signal Name
[/TD]

[TD="width: 20%"]
Length
[/TD]

[TD="width: 20%"]
Color
[/TD]

[TD="width: 20%"]
Gauge
[/TD]

[TD="width: 20%"]
Description
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
FUSED_B+_1
[/TD]

[TD="width: 20%"]
13.5"
[/TD]

[TD="width: 20%"]
GRN
[/TD]

[TD="width: 20%"]
18
[/TD]

[TD="width: 20%"]
To upper right fuse holder tip
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
FUSED_B+_2
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
No connection
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
GND_IN1
[/TD]

[TD="width: 20%"]
1.75"
[/TD]

[TD="width: 20%"]
WHT
[/TD]

[TD="width: 20%"]
18
[/TD]

[TD="width: 20%"]
Daisy chained from LEFT CHANNEL GND_OUT1
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
GND_IN2
[/TD]

[TD="width: 20%"]
1.75"
[/TD]

[TD="width: 20%"]
WHT
[/TD]

[TD="width: 20%"]
18
[/TD]

[TD="width: 20%"]
Daisy chained LEFT CHANNEL GND_OUT2
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
UF_B-
[/TD]

[TD="width: 20%"]
12.5"
[/TD]

[TD="width: 20%"]
BLK
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To LEFT CHANNEL UF_B-1
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
UF_B-1
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
No connection
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
UF_B+
[/TD]

[TD="width: 20%"]
11"
[/TD]

[TD="width: 20%"]
RED
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To LEFT CHANNEL UF_B+1
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
UF_B+1
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
No connection
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
12
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
BLK
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 12R pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
11
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
RED
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 11R pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
10
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
WHT
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 10R pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
9
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
GRY
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 9R pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
8
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
VIO
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 8R pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
7
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
BLU
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 7R pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
6
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
GRN
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 6R pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
PNP
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
YEL
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E PNPR pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
5
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
ORN
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 5R pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
4
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
RED
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 4R pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
3
[/TD]

[TD="width: 20%"]
3"
[/TD]

[TD="width: 20%"]
BRN
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 3R pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
FUSED_B-_1
[/TD]

[TD="width: 20%"]
4.5"
[/TD]

[TD="width: 20%"]
YEL
[/TD]

[TD="width: 20%"]
18
[/TD]

[TD="width: 20%"]
To lower right fuse holder tip
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
FUSED_B-_2
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
No connection
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
GND_OUT2
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
No connection
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
GND_OUT1
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
No connection
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
OUT2
[/TD]

[TD="width: 20%"]
5.5"
[/TD]

[TD="width: 20%"]
YEL
[/TD]

[TD="width: 20%"]
18
[/TD]

[TD="width: 20%"]
To speaker output RED binding post
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
OUT1
[/TD]

[TD="width: 20%"]
17"
[/TD]

[TD="width: 20%"]
RED
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA light board PAD1 (right channel input)
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
BIAS-C
[/TD]

[TD="width: 20%"]
5.5"
[/TD]

[TD="width: 20%"]
RED
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E BIAS-C pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
BIAS-B
[/TD]

[TD="width: 20%"]
5.5"
[/TD]

[TD="width: 20%"]
BLK
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E BIAS-B pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
BIAS-E
[/TD]

[TD="width: 20%"]
5.5"
[/TD]

[TD="width: 20%"]
BRN
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E BIAS-E pad
[/TD]

[/TR]

</tbody>[/TABLE]
 
WOPL Sniffer

WOPL Sniffer

Veteran and General Yakker
#93
Joined
Aug 10, 2015
Messages
11,232
Location
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Tagline
Screw it
#93
Left channel wiring directions....

[TABLE="width: 658"]

<tbody>[TR]
[TD="width: 20%"]
Signal Name
[/TD]

[TD="width: 20%"]
Length
[/TD]

[TD="width: 20%, colspan: 2"]
Color
[/TD]

[TD="width: 20%"]
Gauge
[/TD]

[TD="width: 20%"]
Description
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
FUSED_B+_1
[/TD]

[TD="width: 20%"]
18.5"
[/TD]

[TD="width: 20%, colspan: 2"]
GRN
[/TD]

[TD="width: 20%"]
18
[/TD]

[TD="width: 20%"]
To upper left fuse holder tip
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
FUSED_B+_2
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%, colspan: 2"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
No connection
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
GND_IN1
[/TD]

[TD="width: 20%"]
7.25"
[/TD]

[TD="width: 20%, colspan: 2"]
WHT
[/TD]

[TD="width: 20%"]
18
[/TD]

[TD="width: 20%"]
To copper bus bar single point ground
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
GND_IN2
[/TD]

[TD="width: 20%"]
7.25"
[/TD]

[TD="width: 20%, colspan: 2"]
WHT
[/TD]

[TD="width: 20%"]
18
[/TD]

[TD="width: 20%"]
To copper bus bar single point ground
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
UF_B-
[/TD]

[TD="width: 20%"]
7.5"
[/TD]

[TD="width: 20%, colspan: 2"]
BLK
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To B- bulk capacitor negative terminal
[/TD]

[/TR]

[TR]
[TD="width: 50%, colspan: 3"]
UF_B-1
[/TD]

[TD="width: 50%, colspan: 3"]
From RIGHT channel Backplane Board UF_B-
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
UF_B+
[/TD]

[TD="width: 20%"]
5.5"
[/TD]

[TD="width: 20%, colspan: 2"]
RED
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To B+ bulk capacitor positive terminal
[/TD]

[/TR]

[TR]
[TD="width: 50%, colspan: 3"]
UF_B+1
[/TD]

[TD="width: 50%, colspan: 3"]
From RIGHT channel Backplane Board UF_B+
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
12
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
BLK
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 12L pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
11
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
RED
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E11L pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
10
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
WHT
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 10L pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
9
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
GRY
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 9L pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
8
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
VIO
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 8L pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
7
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
BLU
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 7L pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
6
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
GRN
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 6L pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
PNP
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
YEL
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E PNPL pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
5
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
ORN
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 5L pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
4
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
RED
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 4L pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
3
[/TD]

[TD="width: 20%"]
3.5"
[/TD]

[TD="width: 20%, colspan: 2"]
BRN
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E 3L pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
FUSED_B-_1
[/TD]

[TD="width: 20%"]
9.5"
[/TD]

[TD="width: 20%, colspan: 2"]
YEL
[/TD]

[TD="width: 20%"]
18
[/TD]

[TD="width: 20%"]
To lower left fuse holder tip
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
FUSED_B-_2
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%, colspan: 2"]
N/C
[/TD]

[TD="width: 20%"]
N/C
[/TD]

[TD="width: 20%"]
No connection
[/TD]

[/TR]

[TR]
[TD="width: 50%, colspan: 3"]
GND_OUT2
[/TD]

[TD="width: 50%, colspan: 3"]
From RIGHT channel Backplane Board GND_IN1
[/TD]

[/TR]

[TR]
[TD="width: 50%, colspan: 3"]
GND_OUT1
[/TD]

[TD="width: 50%, colspan: 3"]
From RIGHT channel Backplane Board GND_IN2
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
OUT2
[/TD]

[TD="width: 20%"]
9.5"
[/TD]

[TD="width: 20%, colspan: 2"]
YEL
[/TD]

[TD="width: 20%"]
18
[/TD]

[TD="width: 20%"]
To speaker output WHITE binding post
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
OUT1
[/TD]

[TD="width: 20%"]
15"
[/TD]

[TD="width: 20%, colspan: 2"]
WHT
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA light board PAD16 (left channel input)
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
BIAS-C
[/TD]

[TD="width: 20%"]
5.5"
[/TD]

[TD="width: 20%, colspan: 2"]
RED
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E BIAS-C pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
BIAS-B
[/TD]

[TD="width: 20%"]
5.5"
[/TD]

[TD="width: 20%, colspan: 2"]
BLK
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E BIAS-B pad
[/TD]

[/TR]

[TR]
[TD="width: 20%"]
BIAS-E
[/TD]

[TD="width: 20%"]
5.5"
[/TD]

[TD="width: 20%, colspan: 2"]
BRN
[/TD]

[TD="width: 20%"]
22
[/TD]

[TD="width: 20%"]
To WOA PL14_20 RevD or E BIAS-E
[/TD]

[/TR]

</tbody>[/TABLE]
 
Billboard

Billboard

Journeyman
#94
Joined
Nov 29, 2015
Messages
365
Location
North Shore Massachusetts
Tagline
---
#94
I did notice that I missed the daisy chain on the un-fused wire between the boards, not a big deal, both wires are tied into one lug on the Caps.

I will clean the boards before things go much further, thanks for checking things over.
 
WOPL Sniffer

WOPL Sniffer

Veteran and General Yakker
#96
Joined
Aug 10, 2015
Messages
11,232
Location
Minnie-Soda
Tagline
Screw it
#96
done correctly, it should look like this only better. It takes a lot of practice to get it right. The result should be as such that you wouldn't be embarrassed too bad if somebody opened it up.


Build of 4 002.jpg
 
Billboard

Billboard

Journeyman
#100
Joined
Nov 29, 2015
Messages
365
Location
North Shore Massachusetts
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#100
Control board installed, first row of transistors in.

Right channel had good bias, left channel no bias.

Quick check and there is no plus or minus "un-fused" voltage to the control board, I blew the two on-board fuses F1 and F2 on the left back plane board. Pretty sure I blew the fuses when I was stripping the control board wires before attaching them to the control board. There were no chassis fuses nor any outputs installed at this time, and half way through I did discharge the bulk Caps, so I hope I will be OK.

FYI the bulk CAPs will hold power for days without the fuses installed.....

I do have a 1K ohm 20 watt resistor for discharging the caps, but didn't use it, stupid stupid.

I bypassed the fuses one at a time and my temp fuses did not blow. Going to replace the fuses before I proceed any further.

Getting close to finishing
 
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