Re: Tempest Restoration Blog

While none of that could really hurt anything, I have never had to do this
sort of thing on any Atari vector games and I own several. I think you guys
are confusing these 6100 monitors/games with Sega GO8 which is a whole other
story.

The worst common supply problem with Atari games that have an AVR board is
when the either the +5V or ground edge fingers burn due to bad edge
connector terminals. Once the main positive or negative supply paths are
compromised, the 10 ohm resistors on the AVR board will burn up. It's not
the wires that aren't heavy enough, it's the terminals inside the connectors
that need replacing and the edge fingers that need fixing (simple
self-adhesive solderable copper tape works wonders).

William Boucher

----- Original Message -----
From: "John Robertson" <pinball@telus.net>
To: <vectorlist@vectorlist.org>
Sent: Saturday, September 13, 2008 12:13 PM
Subject: Re: VECTOR: Tempest Restoration Blog

>I think the easiest route is to make a couple of solid common/ground
>connections - one on the logic board (bolt/solder a wire to the ground
>plane, a similar one on the regulator, and lastly one on the monitor
>chassis. These should be tied together with a separate wire - 18 gauge -
>with the tie point being the power supply. So you will have two wires, one
>from the power supply to the boards, and the second to the monitor.
>
> This should help reduce or eliminate the risk of ground/common potential
> voltage drift which burns out driver transistors...
>
> (Of course installing the LV2000 kit on W.G XYs is HIGHLY recommended - I
> do that on every Wells Gardner colour XY monitor that comes near our
> shop!)
>
> John :-#)#
>
> Colin Davies wrote:
>>
>> Thanks - Yes I had that in mind, but not sure how I'll aproach it yet. I
>> did notice the power wiring from P7 (5v out connector) looks a little
>> thin indeed.
>>
>> I've read this before somewhere, wasn't there an article in one of the
>> FAQ's (b+w one perhaps) - I'm sure your name was quoted in there.
>>
>> A friend has a issue with his starwars, the monitor keep going wrong...
>> I'm sure its a similar issue.
>>
>> Regards, Colin
>>
>> ----- Original Message ----- From: "John Robertson" <pinball@telus.net>
>> To: <vectorlist@vectorlist.org>
>> Sent: Friday, September 12, 2008 8:34 PM
>> Subject: Re: VECTOR: Tempest Restoration Blog
>>
>>
>>> Make sure you upgrade the common/ground connections between the loig
>>> boards, power supply and monitor!
>>>
>>> John :-#)#
>>>
>>> Colin Davies wrote:
>>>>
>>>> Finished the brick rebuild - Repaired, sense modded and tested an ARII
>>>> (not checked the audio yet) - Got good healthy voltages...
>>>>
>>>> Plugged all the looms in and the pcb, but it does not seem to be doing
>>>> anything at the moment (got a nice healthy 5v) - I'll need to try
>>>> diagnose the pcb shortly when I can make some space - might be a first
>>>> use of the fluke 9010a :-) - Not got any bleeps or bloops .. must
>>>> investigate further... Can't find my scope probes for a start !!
>>>>
>>>> Dare not plug in an XY monitor just yet....
>>>>
>>>> Cheers, Colin
>>
>>
>> ---------------------------------------------------------------------------
>>
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>> chris@westnet.com
>>
>
>
> --
> John's Jukes Ltd. 2343 Main St., Vancouver, BC, Canada V5T 3C9 Call
> (604)872-5757 or Fax 872-2010 (Pinballs, Jukes, VideoGames)
> www.flippers.com "Old pinballers never die, they just flip
> out"
>
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Received on Sat Sep 13 15:54:40 2008