Re: Tailgunner Repair

Mark Jenison wrote:
>
> Hi all,
>
> I found the two Cinematronic docs on spies. I reset the breakers and
> powered it up.
>
> Symptoms: sound "explosion" heard, neck begins to glow red AND white,
> white blob on screen; 1 breaker pops, then the second a few seconds
> later.
>
> A few questions:
>
> 1) Is the white glow from the neck normal, or is this bad?

No.

> 2) Are 19VARP4's still available?

I think so, from Richardson Electronics. I just checked their site at
http://www.rell.com and it says they are on order and $108 each. Since
when did they add online ordering!?! You might want to give them a call
at 1-800-222-CRTS or email them at dsg@rell.com

> 3) How can I tell if the ribbon cable is in backwards on the monitor?

Breakers will trip. Now you need to figure out if your breaker trip is
due to a reversed cable or a bad monitor.

> 4) With the deflection transistors unplugged, the resistors smoke. No question, just statement.

Yup, that's normal. Don't do that.

> 5) How can you tell if the board works or not if I have no display?
> 6) This is the "HV on board" (early version) of the monitor. Did they
> ever find a solution to revive this type of monitor?
> 7) Can I get a set of DAC80s just in case?
> 8) Anyone wanna test my Tailgunner set before I start repairing this
> monitor? :-)
> 9) Anyone have a Tailgunner bezel for sale?
> 10) Do I have to use the tantelum caps, or can I substitute with
> electrolytic or ceramic?

Depends where they are used. If it is in the line drawing integrators
I'd stay with the tantalums. Tantalums usually have two possible
states, good or shorted.

 
> Thanks.
>
> --
> Mark Jenison
>
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Received on Mon Feb 4 17:15:18 2002