Re[2]: Re: more 6100 issues

-----Original Message-----
From: andre <livnfree_can@yahoo.com>
To: vectorlist@vectorlist.org
Date: Mon, 28 May 2007 18:15:47 -0700 (PDT)
Subject: Re: VECTOR: Re: VECTOR: more 6100 issues

>
> Went over the whole board..actually both of them and
> same issue..it was doing the brightness flicker a
> little more it seemed.
>
> So I threw in a different deflection board I had and
> it cleared it up. So it has to be on the board. All
> the transistors seemed to check out fine. I think the
> only things I changed on that board were the 2 4700uf
> caps and I believe one other.
> One thing I did do wrong was solder in one of the
> 4700's backwards. One of them has the positive on the
> negative pad (where the otehr is neg-plane)..I put it
> neg-neg matching the other and it went extremely hot
> (didn't blow)..chattered for a few seconds before spot
> killer went on. I guess I could check the one that
> 'was' soldered in correctly...that something didn't
> happen to it because of that...could that have caused
> a failure in something else?
>
well that cap you fitted in reverse is probably internally trashed, but the other should be fine.

> But reguardless, I went to turn on the game for a
> second time to check something and it now does not
> come up...guess the bright/dim might have been a dying
> flyback as there is nothing anymore...no voltage on
> the anode. This HV board has a led on it and it is lit
> so I assume that means the board is getting power.
>
if you suspect the lopt then try swapping the deflection pcb to narrow the problem.
personally i would start by checking the soldering on the high-voltage pot under the rubber boots,
then suspect the skeletal pot in the middle of the hv pcb.

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Received on Tue May 29 01:26:03 2007