Search found 15 matches

by qq1975b
Thu Jun 25, 2020 5:15 pm
Forum: ELECTRONICS
Topic: Atari SC1224
Replies: 16
Views: 844

Re: Atari SC1224

The image is like in the picture of the first post. It has a black area on the top of the screen that it can't be corrected using R626 because it is at its top
by qq1975b
Fri Jun 19, 2020 10:04 am
Forum: ELECTRONICS
Topic: Atari SC1224
Replies: 16
Views: 844

Re: Atari SC1224

I replaced all the caps but the problem is still there. The V position is still a little lower at its high top.
by qq1975b
Thu May 21, 2020 3:49 pm
Forum: ELECTRONICS
Topic: Atari SC1224
Replies: 16
Views: 844

Re: Atari SC1224

Ok...so let's start with the caps. Thank you.
by qq1975b
Thu May 21, 2020 3:29 pm
Forum: ELECTRONICS
Topic: Atari SC1224
Replies: 16
Views: 844

Re: Atari SC1224

Ok, I will do that.

By the way, these transistors are 2SD1453 compatible?

https://www.mouser.es/Semiconductors/Di ... u6Z1z0w0x4
by qq1975b
Thu May 21, 2020 11:29 am
Forum: ELECTRONICS
Topic: Atari SC1224
Replies: 16
Views: 844

Re: Atari SC1224

Here there is the service manual. I don't know if it would be good to replace other parts, besides the caps, related to the vertical centering.

https://docs.dev-docs.org/htm/search.php?find=_F
by qq1975b
Thu May 21, 2020 7:34 am
Forum: ELECTRONICS
Topic: Atari SC1224
Replies: 16
Views: 844

Re: Atari SC1224

Hi, thank you for the comment. I know and I did it but then the screen grows on both sides: top and down. I can make the top to look ok but the down goes down the visual screen, so I lose part of what I should be seeing. And I can't make it more centered because the centering screen regulator it is ...
by qq1975b
Wed May 20, 2020 8:02 pm
Forum: ELECTRONICS
Topic: Atari SC1224
Replies: 16
Views: 844

Atari SC1224

Hi, I have an Atari SC1224 where I cannot adjust the vertical size properly. It wasn't centered so I opened it and regulated R626 as said in the service manual. It reached its top but there is still a black zone on the top part. Is there any way to solve this? I mean, I would like the image to fill ...
by qq1975b
Fri Apr 03, 2020 9:03 pm
Forum: CHAT FORUM
Topic: Anyone have Marpet XtraRam +8 files ?
Replies: 2
Views: 853

Re: Anyone have Marpet XtraRam +8 files ?

Yes ;)
Xtra RAM+8.zip
(33.51 KiB) Downloaded 22 times
by qq1975b
Fri Mar 27, 2020 3:33 pm
Forum: EXXOS WEBSTORE INFORMATION
Topic: WEBSHOP OFFLINE DUE TO UK LOCKDOWN
Replies: 125
Views: 15239

Re: WEBSHOP OFFLINE DUE TO UK LOCKDOWN

Thank you to let us know.

We all have to be patient...this is going to last longer than initially expected.

Regards from Barcelona.
by qq1975b
Thu Aug 22, 2019 8:09 am
Forum: ALPHA DEVELOPMENT INFO
Topic: re-Amiga 1200
Replies: 23
Views: 5709

Re: re-Amiga 1200

chucky wrote:
Tue Apr 02, 2019 5:02 pm
qq1975b wrote:
Tue Aug 21, 2018 7:26 pm
An Amiga 3000 motherboard would have been great. There are few 100% working motherboards because of the battery leakage.
I found my way here..

Production of A3000 PCBs is now at 47% completed at boardhouse.. :)
Excellent news :)

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