PL 14-20 Board Picture Request.

[Wombat]

Hello! I am following Alice down the rabbit hole and converting my quasi-complimentary PL 400 to full. I have the back planes, new chassis, and transistors. I also have the resistors and diodes to convert the PL 14-20 board to full, but I would appreciate it if someone could provide a picture of a full complimentary PL 14-20 board so I can compare it to the written instructions and drawing I have. My PL 14-20 board is revision G. Thanks in advance!

 

[Hexis22]

From a recent build:

View attachment IMG_6481.jpeg

 

[Wombat]

Man, that was fast. Just what I needed. Thanks!

 

[Wombat]

I would like to add that I found the other pictures of your great build and will be using them on my adventure.

 

[Hexis22]

I would like to add that I found the other pictures of your great build and will be using them on my adventure.

Perfect!

That’s why I posted the build sequence and pictures.

Post any questions you have and the extensive experience on this forum will guide you to a successful outcome.

 

[Wombat]

I dunno, the advice to check whether the capacitors had discharged with my tongue set me back a couple of days.

 

[Wombat]

I found your picture of the back plane boards showing conical springs on the transistor bolts. Are these necessary, and where do you get them? Thanks!

 

[NavLinear]

Those are a clever way to hold the PEM standoffs in place while soldering them to the back plane board.

 

[NavLinear]

Another type of hold down.

 

[Wombat]

While soldering them. Of course. Mine are assembled already. I should not be allowed to have sharp things . . .

 

[Wombat]

I thought I would post pictures as I progress through this adventure. Here is where I am so far with the new chassis. Thanks to the help of mlucitt, I have turned my quasi PL 14-20 into a full. Comments, suggestions, and criticisms are, of course, welcome.

 

[gene french]

I dunno, the advice to check whether the capacitors had discharged with my tongue set me back a couple of days.

tongue...they told me to use my penis...

 

[laatsch55]

tongue...they told me to use my penis...

The straightest that thing was for years too...

 

[gene french]

i had to call the doctor after 4 hours.....

 

[laatsch55]

No, No, No...you call THE NURSE!!!!

 

[gene french]

No, No, No...you call THE NURSE!!!!

lolololol

 

[J!m]

He’s harrier than the Dr.

 

[gene french]

He’s harrier than the Dr.

just my luck...a tranny nurse...
lolol

 

[Oldskoolfan]

Another type of hold down.
View attachment 76417 View attachment 76418

That is a great idea!