Re: Tempest Restoration Blog

I've had a further prod at this tonight.....

There was an issue with the clock on the pcb.... I've replaced the 2n3904
and the 74s04... initially nothing, but I prodded around and its started to
clock now. The replacement parts were a bit of a lash up, as I could not
find my desoldering stations (please dont ask !!).... The 74S04 is on stilts
(the old legs) at the moment.... I'll tidy it all up later - promise !!

Anyway... I now have a clock.... and have booted into the diagnostics by
shorting the diag switch wires out..... I can advance through the tests
using the slam switch, and get the 4 note test tone ( thats a result in my
book ) - but no vectors just yet.....

I'm following this guide...
http://www.kfu.com/~nsayer/games/tempest.html#bad-vsm

I plan to get the HP comparitor out and start working though the VG
circuit.... Any advice would be appreciated....

Cheers, Colin

----- Original Message -----
From: "Colin Davies" <colin.w.davies@btopenworld.com>
To: <vectorlist@vectorlist.org>
Sent: Friday, September 12, 2008 8:08 PM
Subject: Re: VECTOR: Tempest Restoration Blog

> 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
>
> ----- Original Message -----
> From: "Colin Davies" <colin.w.davies@btopenworld.com>
> To: <vectorlist@vectorlist.org>
> Sent: Wednesday, September 10, 2008 8:08 PM
> Subject: Re: VECTOR: Tempest Restoration Blog
>
>
>> Thanks - I've repaired one already in the Starwars and a couple of B+W
>> ones.
>>
>> Main thing is to get the power supply running (Brick and ARII), test /
>> repair the pcb, and get it displaying on an XY scope... Then its monitor
>> time...
>>
>> Nearly finished the brick rebuild, New big blue eqivalent, new capacitor
>> clamp, new 35A bridge rectifier, new fuse holders (individual ones with a
>> heavy duty one on F3 for the 20 amp fuse), new 15 way connector, new 3
>> way connector for aux power and lots of wire... uprated a little from
>> 1.5mm (16awg) to 2.5mm in some places. It was missing a LOT of parts and
>> had been hached to death... very sorry looking thing :-) Had to move the
>> aux power tags underneath, to allow for drilling and nuts and bolts for
>> the new fuse holders.. Just need to wire up the Aux power 3 way connector
>> (and a spare too) and then its time for a smoke test !! - Colour XY
>> power bricks are pretty hard to come by nowdays in the UK, hence the
>> re-build.
>>
>> Cheers, Colin
>>
>> ----- Original Message -----
>> From: "Mathieu Peyroulet Ghilini" <peyroulet@gmail.com>
>> To: <vectorlist@vectorlist.org>
>> Sent: Wednesday, September 10, 2008 5:09 PM
>> Subject: Re: VECTOR: Tempest Restoration Blog
>>
>>
>>> good luck for the monitor, you'll need it..
>>> :)
>>> Regards
>>>
>>> On 9/9/08, Colin Davies <colin.w.davies@btopenworld.com> wrote:
>>>> I picked up a Jamma World Cup 90 machine last week... It was quite
>>>> local to
>>>> me (North Wales in the UK), and was reasonably priced....
>>>>
>>>> So... Why am I posting this ? - Well...its a Tempest Cab and I plan to
>>>> get
>>>> it back to how the Atari God's intended :-)
>>>>
>>>> I'm putting a bit of a blog up on Jammaplus forums if any one wants to
>>>> watch/read...
>>>> http://www.jammaplus.co.uk/forum/forum_posts.asp?TID=10883
>>>>
>>>> So far, its mostly about restoring the power brick which has been
>>>> gutted
>>>> during its life, but a lot more will follow.... Such as the monitor and
>>>> possible pcb repair... Got to start somewhere from the ground up , so
>>>> the
>>>> power supply sounds like a good starting point to me !!
>>>>
>>>> You will need to register to view, but its painless and you won't get
>>>> spammed... Thats a promise as I'm one of the moderators :-)
>>>>
>>>> I may well be posting on here asking for advice (especially if the pcb
>>>> needs
>>>> repair) - but I think I can handle it all.... so far....
>>>>
>>>> Regards, Colin
>>> ---------------------------------------------------------------------------
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>>
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>
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Received on Mon Sep 15 17:43:52 2008