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Computer Geek 101
01-17-2009, 04:44 AM
I have a few job display boards where I work. One display that has been in action for about 10 months is now started to act funny. If I hook it up to my laptop it will work all day. If I connect it to the job display box it will work for a while then the screen goes black. I replaced the prop with a new one and it still does it. Anyone ever have any similar problems with a prop/lcd monitor system? Is it just the monitor just going bad? Thanks for any ideas.

Bob Lawrence (VE1RLL)
01-17-2009, 05:11 AM
Computer Geek 101 said...
One display that has been in action for about 10 months is now started to act funny. If I hook it up to my laptop it will work all day. If I connect it to the job display box it will work for a while then the screen goes black



1.Check the Xtal freq or just try another Xtal.

2. Could be a bad voltage regulator. Check the voltages on the prop chip before it goes dead and then after.

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Leon
01-17-2009, 05:19 AM
Another possibility is a piece of new equipment that is putting a glitch into the system via the mains supply.

Leon

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Rayman
01-17-2009, 05:25 AM
Sound like a power supply problem... Maybe an overheating voltage regulator?

Computer Geek 101
01-20-2009, 08:39 PM
Thanks guys. Ill check them out today.