Re: Very Dim Asteroids Monitor Problem

From: John Robertson <jrr_at_flippers.com>
Date: Fri Jan 24 2003 - 14:37:23 EST

Is there a chance of a cap in backwards in the HV supply? Or failing? The
HV cage produces the screen voltages through a divider AIR.

John :-#)#

At 12:22 AM 25/01/2003 -0800, Matt Rossiter wrote:
>I've been Looking at this early verion of the G05 with the extra regulator
>PCB and the problem is the monitor is very dim. The tube is fine, but the
>Grid-1 voltage is only 10v when the brightness pot is turned all the way up.
>Normally is should be around 30-35v for a good picture. The Z-amp voltage
>is only about 70v when it should be around +90v, but I think that should
>still be ok.
>
>This is probably a simple question, but if the most I'm getting is +10v with
>the brightness pot turned all the way up, what should I be checking for?
>I've checked the brightness pot and it's ok. The voltages coming from the
>regulator PCB look ok. The tube and yoke are fine. And the monitor has new
>electolytic capacitors. Anybody?
>
>Here's the manual if anyone cares to take a guess.
>http://www.spies.com/~arcade/manuals/G05-tm146.pdf
>
>
>Thanks.
>
>
>Matt
>
>
>---------------------------------------------------------------------------
>** 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 Fri Jan 24 11:37:30 2003

This archive was generated by hypermail 2.1.8 : Fri Aug 01 2003 - 00:34:18 EDT