Pat Danis wrote:
> Thanks John. Wasn't aware of that bulletin. I have 3 of these
> machines. I'll have to dig them out and check them at some point.
>
> Pat
I imagine this advisory applies to both Cinematronics and Vectorbeam
monitors.
While you are in there you may want to consider replacing the
electrolytic caps in the HV section (and probably all of the caps in
that monitor - what the heck). These are getting old, and can lead to HV
drive transistor failure.
Note the original caps may even seem OK in static tests - I had used
both a ESR and Capacitor meter on these and they tested OK, but after
replacing them the HV worked as it should.
Need to do some more tests on Friday when I get back to the shop as
there are interesting differences between the Vectorbeam and
Cinematronic monitors that I wish to report on to the group as a short
list of suggested upgrades.
John :-#)#
>
> On 1/2/2013 1:08 PM, John Robertson wrote:
>> Been going through my Vectorbeam files as I am adding my NOS
>> Vectorbeam stock to flippers/catalog site and found this notice that
>> you guys may (or may not) be aware of:
>>
>> ---------------------------------------(quote)----------------------------------------
>>
>>
>> SERVICE BULLETIN
>> CINEMATRONICS' SPACE WARS
>>
>> It has been brought to our attention that the windings of the high
>> voltage transformer located under the copper coloured (sic - writer
>> must have been a Brit or a Canadian! - JR) shield on the monitor
>> chassis P.C. Board have a breakdown temperature of 50 centigrade, and
>> the operating temperature under the shield sometimes reaches 70
>> centigrade causing a resistor to burn out.
>>
>> To rectify this problem, remove the monitor and add a 1/8 inch spacer
>> (two or three metal washers or one nut) between each side of the
>> shield and the P.C. Board, allowing more air to circulate and bring
>> the operating temperature down to tolerable levels.
>>
>> This change, which may be done on location, should NOT be disregarded
>> as repairs are costly and down time is worse.
>>
>> ------------------------------(end
>> quote)----------------------------------
>>
>> John :-#)#
>>
>
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--
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 Thu Jan 3 00:30:38 2013
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