Re: Apple Lisa CRT replacement?

From: Jason Perkins <perkins.jason_at_email.domain.hidden>
Date: Wed, 17 Jan 2018 08:17:43 -0500


Use the deflection yoke from the Lisa.

Did you get a horizontal or vertical line? Did it seem to be the entire picture, just squashed down to 1mm? Nothing on the CRT socket could cause a loss of vertical or horizontal deflection.

PS: Just about any 12" B&W CRT will fit. Here's a (real time) video I made of swapping the burnt in CRT on my 2/5:
https://www.youtube.com/watch?v=Oauo8NQYomo

-J

On Wed, Jan 17, 2018 at 5:50 AM, <austjeremy_at_email.domain.hidden> wrote:

> I just purchased a Lisa with a broken screen. I would rather not purchase
> an expensive CRT on eBay. So, I figured I will just use what I have on
> hand. The closest thing I have is a green monochrome CRT. It has the same
> number of pins, and is exactly the same size. It also from Clinton. The
> part numbers are:
> 1. CE745Z12K31VR
> 2. CEULC99F1ATE
>
> I'm pretty sure the pin out is different. I figure this after it just
> showed a line during startup. lol
>
> Lisa
> 1. Green
> 2. Yellow
> 3. Brown
> 4. Black
> 5. White (Ground)
> 6. Red
> 7. Blue
>
> Donor:
> 1. Empty
> 2. Blue
> 3. Black
> 4. Green
> 5. Yellow
> 6. Red
> 7. White
>
> Are the colors standard? Can I expect this thing to work if I just reroute
> the wires to match the colors on the donor CRT? Instead of hacking the Lisa
> video board. I was thinking about using breadboard wires with pins, and
> connecting them to the Lisa CRT connector. I would then rout the wires from
> there to a connector with the wires going to the proper pins. If it works,
> then I would solder things in place.
>
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-- 
Jason Perkins
313 355 0085

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Received on 2018-01-17 12:15:16

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