Re: Tempest X,Y size

Kevin Moore wrote:
> Well I went ahead and replaced both switches, and problem is gone.
> Thanks John for being smarter than me once again :)
>
> Kevin
Glad to help, I'm stuck with a Asteroids Deluxe that was almost working
(Self test was good, Attract was sick) - cold spray indicated a bad Data
245 (E2 as I recall), replaced said 245 and the screen is now blank!

RAM, ROM, are all fine according to the Fluke 9010. Signatures match,
except theROM signatures appear to be for a different set of Eproms -
the Fluke signatures of my Eproms match the ones for that series, but
the Data line signatures do not match the ones in the Signature Analysis
Guide put out in 2000 by Peter Fyfe - but he did not say which Eproms he
was using...

Watchdog is constantly resetting...and the Self Test no longer works!
Checked for solder bridges, missing connections, etc. - but none have so
far turned up.

Painful!

Sigh...

John :-#(#
>
> On Mon, Aug 23, 2010 at 12:12 PM, Kevin Moore <talon.k@gmail.com
> <mailto:talon.k@gmail.com>> wrote:
>
> Voltages are good, and haven't tried replacing the the lf1320's
> yet, since it affects both x and y. Wouldn't have thought both
> would have the exact same problem.
>
> Kevin
>
>
>
> On Mon, Aug 23, 2010 at 12:03 PM, John Robertson
> <pinball@telus.net <mailto:pinball@telus.net>> wrote:
>
> Kevin Moore wrote:
>> I should mention also that all my vector boards get worked on
>> / tested on a Pat9000 So the setup is the same for all
>> boards. So pretty much any problem I working on is board
>> related :)
>>
>
> Fair enough...I would like to assume you checked the on-board
> voltage regulator outputs and they are correct...
>
> Change any CMOS switches recently?
>
> John :-#)#
>
>>
>> On Mon, Aug 23, 2010 at 11:44 AM, John Robertson
>> <pinball@telus.net <mailto:pinball@telus.net>> wrote:
>>
>> Kevin Moore wrote:
>>
>> Having a strange issue with a Tempest. The X, and Y
>> size is to big. I can adjust the size smaller, or
>> larger but I can't get it small enough to fit on the
>> screen. It's got new adjustment pots and the picture
>> looks fine. It's just to big.
>>
>> Any ideas?
>>
>> Thanks,
>>
>> Kevin
>>
>> Check the HV going to the picture tube anode. If it is
>> too low your picture will 'bloom'...
>>
>> John :-#)#...
>>
>>
>
>
> --
> 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 <http://www.flippers.com>
> "Old pinballers never die, they just flip out"
>
>
>
>

-- 
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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