Getting ready to do wopl 400 build
- Thread starter roccus
- Start date
both boards are already wired just need to add the one wire for the protection board then solder the 4 leads from left board to right board that joins the boards together in matrimonial joy 
Ensure you trim the underside of the boards carefully. You do not want shorts to the chassis under the boards.
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Hi Ray
From the light board document provided:
1. Wiringfrom amplifier to Light Board RevB is as follows:
a. PAD1= RED, right channel output
b. PAD2= WHITE, left channel output
c. PAD3= BLACK, amplifier star point ground
d. PAD4= GRAY, AC1 from the main transformer (sometimes these leads are green or someother color)
e. PAD5= GRAY, AC2 from the main transformer (sometimes these leads are green or someother color)
f. Thelast 2 AC wires are interchangeable, no polarity involved.
2. Usethe nylon washers provided to space the Light Board off of the back of themeter such that the round body of the LEDs just kisses or is slightly off ofthe front plastic jewel lens. Gettingthe LEDs as close to the lens as possible without crushing or bending the LEDsor LED leads against the lens helps to maximize the light dispersion via totalinternal reflection against the meter lens inner surface. A dozen #6 x 1/16†thick washers have beenprovided for this purpose. Mostapplications require either one or two nylon washers stacked on each screw studunder the light board and above the meter case to get the recommended LED spacing. Put the last 4 nylon washers on top of theLight Board before installing the hex nuts provided to prevent scuffing of thePCB surface. DO NOT OVERTIGHTEN THE NUTSON THE METER STUDS. A gentle tighteningis all that is required.
From the light board document provided:
1. Wiringfrom amplifier to Light Board RevB is as follows:
a. PAD1= RED, right channel output
b. PAD2= WHITE, left channel output
c. PAD3= BLACK, amplifier star point ground
d. PAD4= GRAY, AC1 from the main transformer (sometimes these leads are green or someother color)
e. PAD5= GRAY, AC2 from the main transformer (sometimes these leads are green or someother color)
f. Thelast 2 AC wires are interchangeable, no polarity involved.
2. Usethe nylon washers provided to space the Light Board off of the back of themeter such that the round body of the LEDs just kisses or is slightly off ofthe front plastic jewel lens. Gettingthe LEDs as close to the lens as possible without crushing or bending the LEDsor LED leads against the lens helps to maximize the light dispersion via totalinternal reflection against the meter lens inner surface. A dozen #6 x 1/16†thick washers have beenprovided for this purpose. Mostapplications require either one or two nylon washers stacked on each screw studunder the light board and above the meter case to get the recommended LED spacing. Put the last 4 nylon washers on top of theLight Board before installing the hex nuts provided to prevent scuffing of thePCB surface. DO NOT OVERTIGHTEN THE NUTSON THE METER STUDS. A gentle tighteningis all that is required.
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Sorry I don't know all the terms you use for the boards I know them as backplane boards the ones I have installed now then their is the control board I have yet to build then there will be a speaker protection board I don't have yet.. so which board you calling the driver board??
No I have not tested the power supply yet?? I don't recall seeing that in the notes I have here
Also the transistors I got from Joe do not have any NPN or PNP marking on them so I'm not sure which is which
No I have not tested the power supply yet?? I don't recall seeing that in the notes I have here
Also the transistors I got from Joe do not have any NPN or PNP marking on them so I'm not sure which is which
Oh ok I was going by Joes assembly notes and posts to Marks build...
" Mark the way you check out your backplane work before you attach the control board is as follows (and I will be adding these bring up instructions to the backplane assembly notes soon):" ..... must have done stuff different back then
And Joes notes go from step #26 rerouting th AC line to the thermal switch straight to #27 "Now it is time to install the TO-3 transistors" .... guess there seems to be some steps missing here in the docs
Soooo I guess I start building the control board then get it installed.. thanks for info
" Mark the way you check out your backplane work before you attach the control board is as follows (and I will be adding these bring up instructions to the backplane assembly notes soon):" ..... must have done stuff different back then
And Joes notes go from step #26 rerouting th AC line to the thermal switch straight to #27 "Now it is time to install the TO-3 transistors" .... guess there seems to be some steps missing here in the docs
Soooo I guess I start building the control board then get it installed.. thanks for info
