Re: Cinematronics HV supply problem

It's a Keltron HV unit. Instead of +90 and +400 I'm getting something small
like +3 and +22. I've swapped the IC, and one of the caps. I'll try
replacing them all and see what happens. If that doesn't work, I can't think
of anything else.

Any suggestions are welcome.

Matt

David.Fish@axcelis.com wrote:

> Matt,
>
> Alot depends on the type of Hi-V circuit that your monitor
> has. Is it the on-board type or one of the two off-board
> types (Keltron or PTK). Also, what do you get for the other
> two voltages; the +400V and the +90V? It might be easier to
> narrow down with that information.
>
> As for recapping, there are two caps on the on-board style
> that could conceivably cause a low output voltage: C19 and
> C20, a 5uF @100V and a 10uF @100V electrolytic, respectively.
> If I recall correctly there's not much that can be swapped
> out in a Keltron and I think that the PTKs are sealed.
>
> Dave
>
> -----Original Message-----
> From: Matt Rossiter [mailto:rossiter@ni.net]
> Sent: Tuesday, April 02, 2002 2:58 AM
> To: vectorlist@synthcom.com
> Subject: VECTOR: Cinematronics HV supply problem
>
> I'm only getting about 1.4K out of a HV supply. I've verified that it's
> definitely the HV unit. I haven't worked on one of these yet, but I'm
> thinking maybe a simple cap kit? Or maybe swap the IC?
>
> Suggestions?
>
> Matt
>
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Received on Tue Apr 2 23:39:26 2002