| Title: | Atari ST, TT, & Falcon |
| Notice: | Please read note 1.0 and its replies before posting! |
| Moderator: | FUNYET::ANDERSON |
| Created: | Mon Apr 04 1988 |
| Last Modified: | Tue May 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 1433 |
| Total number of notes: | 10312 |
Hi,
my dad blew up some resistors in his Atari 1040STF. I got some
schematics, but not those of this revision: C070859-001, Rev.2.1.
Maybe there is somebody out there who can help me with the values
of the following resistors in the Video-Shifter area:
R46, R47, R52, R53 (codes not longer readable ;-). They seem to be
responsible for color video output, because red and blue are missing
on the monitor. Btw, this is a PAL machine...
Any help greatly appreciated,
Bernd
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 1376.1 | Some resistor values. | IJSAPL::KDEVRIES | Kees de Vries | Fri Aug 13 1993 03:28 | 18 |
Bernd
I have found some values for you
R46 24K Ohm Green video
R47 24K Ohm Blue Video
Strange because you say Red and Blue are missing.
R52 150 Ohm
R53 3.6 K Ohm
The last two resistors are in the 32 Mhz clockcircuit.
Also strange as far as I can see , if these two are broken, your
machine should completely dead, no clocksignals any more!
My diagrams are for 1040 STFM C070522 REV a.
Kees de Vries., DEC Rotterdam Holland.
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| 1376.2 | fixed! | UFHIS::BFALKENSTEIN | Mon Aug 30 1993 11:16 | 12 | |
Thanks a lot for your help, Kees. Seems that this is a very special
revision my dad has to deal with. I phoned Atari Germany, and
fortunately they were able to send me the right schematics (in fact
they were very polite and helpful, looked like they were happy to help
out the last interested ;-) Atari user in Germany).
So the machine is fixed now (two diodes and transistors were dead also)
and full color is available again.
Bernd
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