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Re: OT: CRT monitor intermittent issue
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John Robertson
May 17, 2012, 1:37:22 PM5/17/12
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skippy church wrote:
> With all due respect, caps (while nice to replace) won't be the issue
> here. Sounds like either the flyback is crapping out or you should
> replace the HOT, or power filter cap (a part that rarely comes with the
> standard cap kit).
>
> What is the model of the monitor, please? Not the name on the tube, but
> the actual number on the chassis board? Also, what resolution?
> standard/medium/high?
>
>
(please quote original message for thread continuity!)
(quote)
I have a table top multicade with a 19" crt monitor. It just started
having this intermittent issue... sometimes you can turn the power
switch on and everything works perfect. Sometimes you turn the system on
but the monitor does not power up. The system itself is on and working
cuz you can move the joystick around and hear the normal system sounds
but monitor is black. I checked the simple connections. Could this be a
bad capacitor(s) on the chassis board? Not sure what to look for or what
to check next... Thanks
(end quote)
Of course the proper newsgroup for this discussion is
rec.games.video.arcade.collecting or post to rasterlist on vectorlist.org
I'm not in complete agreement on this suggestion. Certainly knowing the
monitor make and model will go a long way to figuring out what is likely
- if the flyback or HOT were failing the result is usually complete
failure, not a periodic work/not work situation.
A recap can't hurt unless the owner is not good at soldering and damaged
traces, gets caps in backwards, etc.
My first suspect is the B+ circuit. Marginal B+ caps on the feed to the
flyback can lead to regulation failure and subsequent failure of HOT output.
So, lets start with the make/model and argue more later.
John :-#)#
--
(Please post followups or tech enquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
> With all due respect, caps (while nice to replace) won't be the issue
> here. Sounds like either the flyback is crapping out or you should
> replace the HOT, or power filter cap (a part that rarely comes with the
> standard cap kit).
>
> What is the model of the monitor, please? Not the name on the tube, but
> the actual number on the chassis board? Also, what resolution?
> standard/medium/high?
>
>
(please quote original message for thread continuity!)
(quote)
I have a table top multicade with a 19" crt monitor. It just started
having this intermittent issue... sometimes you can turn the power
switch on and everything works perfect. Sometimes you turn the system on
but the monitor does not power up. The system itself is on and working
cuz you can move the joystick around and hear the normal system sounds
but monitor is black. I checked the simple connections. Could this be a
bad capacitor(s) on the chassis board? Not sure what to look for or what
to check next... Thanks
(end quote)
Of course the proper newsgroup for this discussion is
rec.games.video.arcade.collecting or post to rasterlist on vectorlist.org
I'm not in complete agreement on this suggestion. Certainly knowing the
monitor make and model will go a long way to figuring out what is likely
- if the flyback or HOT were failing the result is usually complete
failure, not a periodic work/not work situation.
A recap can't hurt unless the owner is not good at soldering and damaged
traces, gets caps in backwards, etc.
My first suspect is the B+ circuit. Marginal B+ caps on the feed to the
flyback can lead to regulation failure and subsequent failure of HOT output.
So, lets start with the make/model and argue more later.
John :-#)#
--
(Please post followups or tech enquiries to the newsgroup)
John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9
Call (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, Video Games)
www.flippers.com
"Old pinballers never die, they just flip out."
m6onz5a
May 17, 2012, 2:56:02 PM5/17/12
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