RE: Omega Race

The +5 signal had a nasty spike on it. Got the red LED and the monitor would
NOT show vectors, but the hv whine was going and the filament was glowing
regular. The second i replace the caps it came right up. I would check the
+5 with an oscilloscope and see if it is clean. Mine looked like a triangle
wave with a parasitic spike at the tip. Those huge value caps are a pain to
locate, i talked to my EE friend and we mathematically figured out the
correct modern value to use with less current drain on the power supply
circuit. I think I have some pics somewhere. the game runs fine and has for
months with no issues.
 
c-s
 

-----Original Message-----
From: owner-vectorlist@vectorlist.org
[mailto:owner-vectorlist@vectorlist.org] On Behalf Of newnan
Sent: Monday, August 04, 2003 9:12 PM
To: vectorlist@vectorlist.org
Subject: Re: VECTOR: Omega Race

Chris- What would your machine do when it reset? Also- I am getting no
video. Was it you who posted last year about the cap replacement? If so
which ones did you use?
 
Thanks
 
Nooner

----- Original Message -----
From: Chris <mailto:cstarr@speakeasy.net> Starr
To: vectorlist@vectorlist.org
Sent: Monday, August 04, 2003 7:25 PM
Subject: RE: VECTOR: Omega Race

Those BIG Filter caps on the power supply, get rid of them and replace with
good ones. My CPU would hang because the caps read good, and then a load was
placed on them, and I got a nasty spike on the +5 logic that put mine into a
perpetual RESET mode.
 
 

-----Original Message-----
From: owner-vectorlist@vectorlist.org
[mailto:owner-vectorlist@vectorlist.org] On Behalf Of newnan
Sent: Monday, August 04, 2003 7:23 PM
To: vectorlist@synthcom.com
Subject: VECTOR: Omega Race

Howdy Y''all
 
I have an Omega Race that plays blind. The selftest says Roms 9 through 14
are bad. Do Roms 13 &14 need to be programmed with anything special? If
so- is there a list member who can burn these for me- for a price For that
matter, is there anyone with the right replacements for mine that are bad?
 
Also, is there any good way to test this monitor without a working board? I
will occasionally get random (yet crisp)garbage scrolling across it- today-
nada. The LED is illuminated on the monitor PCB.
 
Thanks
 
Nooner

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Received on Tue Aug 5 21:30:38 2003