Newbie question on CRT moniter failure, chirping
 

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?

"David Merryman" writes:

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.

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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

.... :) What does that wire do? =8Q (oh!)

On Thu, 07 Jul 2005 23:25:41 GMT, "David Merryman"
wrote:

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?




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