RE: Asteroids GO5 help

I have ordered a cap kit...and transistors...

I am just afraid that I will ruin parts if the root problem is not taken
care of.

I had removed c900 and I got the same continuity beep with the cap
removed...testing on the traces where the cap was mounted...getting 18ohms
resistance.

I have been fooling with the EHT unit...and I am confused. When I test
across pins 7 and 8 it gives 18ohms resistance. This is so low the dmm
beeped continuity.

This is why it seems I am getting this reading...R900 is rated at 18R. I
guess this is 18ohms. I am getting a (short?) circuit from one leg of R900
and the collector on Q903. The collector is grounded. Is the collector
supposed to be grounded?

Thanks for putting up with a non-techie.

I wish I understood more of this....it would make my questions better...

Ron

-----Original Message-----
From: owner-vectorlist@synthcom.com
[mailto:owner-vectorlist@synthcom.com]On Behalf Of Tom McClintock
Sent: Wednesday, October 02, 2002 3:34 PM
To: vectorlist@synthcom.com
Subject: Re: VECTOR: Asteroids GO5 help

Ron wrote:

> Here is what I have done. After blowing f102 again, I removed it,
unplugged
> P500 from the deflection board, and powered up. I checked for dc across
> pins 6 and 7 and got 40.3v. F102 does not blow with P500 unplugged. Does
> this mean the problem is in the EHT cage?

Yes, your HV cage is drawing too much current and blowing F102. You could
always
start with a cap kit :)

> I am also unsure of discharging the tube. I have read that you need to
use
> resistors to insure you won't damage something in the EHT cage. Is this
> correct?

Yes, this is correct.

http://www.ionpool.net/arcade/tech/bw_vector_monitor_faq.pdf

tm

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@synthcom.com. Please direct other
** questions, comments, or problems to vectorlist-owner@synthcom.com.

---------------------------------------------------------------------------
** To UNSUBSCRIBE from vectorlist, send a message with "UNSUBSCRIBE" in the
** message body to vectorlist-request@synthcom.com. Please direct other
** questions, comments, or problems to vectorlist-owner@synthcom.com.
Received on Wed Oct 2 16:05:30 2002