Thread: M1438 Pictures
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Old 16 January 2021, 08:54   #19
jbenam
Italian Amiga Zealot

 
Join Date: Jan 2009
Location: Italy
Age: 33
Posts: 1,433
Quote:
Originally Posted by Retrorepair View Post
Sorry mate, we had a baby between my last post and now so my attention has been elsewhere

I have made the modifications which appear to be all that differs between my model and the model found here:

http://ataricomputers.altervista.org...1438S_MOBO.jpg

However, both low and high resolutions seem to be twice as wide as the should be and therefore double up. The vertical size seems fine though.

I'm going to investigate a bit more but without seeing that exact models board and the values of the caps on that model, I don't know that I can complete this project. I'll go over again though to try and rule out any mistakes.
Hi,

No worries and congrats!

My other M1438s (which is now my only one, since I gave the purplish one to a friend, since I couldn't keep it - too many CRTs!) is a slightly previous model, which might be the one you have got.

I will do a tube swap between the two 1438s in the next 2-3 weeks to see if the purple issue is a tube issue. I will sneak some PCB pics in and see if those help you.

Please let me know which part of the PCB you exactly need and I will do my best
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