Just turned on the moniter and instead of the whoom sound of the tube coming up I got a chirping sound and no picture. This is a monivision 30 in crt about 2-3 years old. Am I screwed or does it sound like something either I or a repairman can do?
Power supply or deflection failure. The power supply is trying to start up but sensing a problem, possibly a shorted horizontal output transistor or other overload condition.
Yes, it can be repaired by a professional. By you if you have some experience or are willing to spend time learning.
See the monitor repair guide at the site below.
--- sam | Sci.Electronics.Repair FAQ Mirror:
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"David Merryman" bravely wrote to "All" (07 Jul 05 23:25:41) --- on the heady topic of "Newbie question on CRT moniter failure, chirping"
DM> From: "David Merryman" DM> Xref: aeinews sci.electronics.repair:52707
DM> Just turned on the moniter and instead of the whoom sound of the tube DM> coming up I got a chirping sound and no picture. This is a monivision DM> 30 in crt about 2-3 years old. Am I screwed or does it sound like DM> something either I or a repairman can do?
The chirping comes from the switching power supply trying to start up into a short circuit but failing and going into protection repeatedly. The most likely cause of a dead short across the powersupply output is a shorted HOT. Then we have to uncover why the HOT shorted out. Is the horizontal drive okay or was it a powerline glitch? Etc... If you have no idea what I'm talking about then have it seen by a pro.
A*s*i*m*o*v
... :
Just had a 36" Monivision do this and it turned out to be the yoke's H windings were shorted. Can't find a source of parts in the USA. If you find a part source, please let us know. Chuck
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