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nelsress begins his WOPL 400 project
- Thread starter nelsress
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Brass tacks
Okay, I've finally decided to tear this baby down and get down to brass tacks. I stripped away all the point to point back plane stuff, used the new hardware, eliminated the star washers between the heat sink fins and the chassis and inserted the shoulder washers. It seems I've got a lot more wires remaining when compared to the assembly instruction photos and the ones on Lee's first WOPL 400 build thread. Here's what I've got in photos up to this point.
As for preparing the back plane boards, I'm a little fuzzy on what I'm doing with the masking tape, etc. on that step. Thanks guys.
Okay, I've finally decided to tear this baby down and get down to brass tacks. I stripped away all the point to point back plane stuff, used the new hardware, eliminated the star washers between the heat sink fins and the chassis and inserted the shoulder washers. It seems I've got a lot more wires remaining when compared to the assembly instruction photos and the ones on Lee's first WOPL 400 build thread. Here's what I've got in photos up to this point.
As for preparing the back plane boards, I'm a little fuzzy on what I'm doing with the masking tape, etc. on that step. Thanks guys.
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Fan
Hi Mark, I don't know if you should use a fan or not. I had my original, stock PL 400 on the bottom shelf of an enclosed cabinet without a fan for over 20 years without a problem. Lee or Joe could tell you/us how important a fan is, perhaps the new mods make it run a little hotter, it is after all putting out even more watts than in its original version.
Hi Mark, I don't know if you should use a fan or not. I had my original, stock PL 400 on the bottom shelf of an enclosed cabinet without a fan for over 20 years without a problem. Lee or Joe could tell you/us how important a fan is, perhaps the new mods make it run a little hotter, it is after all putting out even more watts than in its original version.
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- Joined
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- 75,036
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- Gillette, Wyo.
- Tagline
- Halfbiass...Electron Herder and Backass Woof
- Joined
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- Halfbiass...Electron Herder and Backass Woof
- Joined
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- Halfbiass...Electron Herder and Backass Woof
Ooops
I found what the thermoswitch is from your first WOPL 400 thread, damn. No Lee, it had one, I just cut it off the wire harness! For some reason I thought it was going to be scrapped and something on one of the boards was going to take it's place. Now to figure out what wires went where as I cut the wires off tight up against so as to be sure to have enough wires.
I found what the thermoswitch is from your first WOPL 400 thread, damn. No Lee, it had one, I just cut it off the wire harness! For some reason I thought it was going to be scrapped and something on one of the boards was going to take it's place. Now to figure out what wires went where as I cut the wires off tight up against so as to be sure to have enough wires.
Step 1 Backplane boards
If I'm not mistaken, the threaded cups that get soldered in the back plane boards first get inserted from the solder (non-silk screened) side. I'm assuming that they get soldered onto the boards, also on that same side but I'm not sure what I'm supposed to use the tape for and how I can place a piece of masonite on top of these AND solder them to the boards at the same time. Obviously I'm confused and, even though I swear English IS my first language, I'm having difficulty understanding this seemingly simplest of steps. Yikes, I could be in trouble if this is tripping me up!!
If I'm not mistaken, the threaded cups that get soldered in the back plane boards first get inserted from the solder (non-silk screened) side. I'm assuming that they get soldered onto the boards, also on that same side but I'm not sure what I'm supposed to use the tape for and how I can place a piece of masonite on top of these AND solder them to the boards at the same time. Obviously I'm confused and, even though I swear English IS my first language, I'm having difficulty understanding this seemingly simplest of steps. Yikes, I could be in trouble if this is tripping me up!!
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OK, so we are not confused , let's use proper nomenclature. The first thing to be soldered to the backplanes are the "solder cups". Those are the friction grip cups for the output transistor leads. The next thing is the "threaded standoffs". Those are the threaded inserts for the output transistors hold down screws...