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Re: Burned diode on CRT driver board CSA803A


 

Hi Gerard,

Does the CSA803A have a color display or is it BW? Could you give a
refdes for the parts in question or link to a photo somewhere so I can
find their location?

PS: I would suggest the service manual but that thing is near useless.

-Evan

On Sun, Jan 5, 2025 at 9:19?AM gjm45janssen via groups.io
<g.j.m.janssen@...> wrote:

Dear all,

The screen of my CSA803A developed a problem. It showes flyback lines, low intensity and I could not get it calibrated properly. The size of the picture, focus and convergence are o.k..
After removing the CRT driver board A8 (671-1027-01), it turned out that a (zener?) diode is completely burned and also a 100uF/50V elco did not look healthy. This diode is immediately below the metal box shielding the flyback transformer and alongside what seems to be a very big tantalum elco.
Any help in finding the type of this diode is very much appreciated!

Kind regards, Gerard




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