Re: Tech Tips - Vectorbeam/Cinematronics monitor

Tom McClintock wrote:
> Thanks John. I'm happy to send along all my original files for anyone
> that wants to update that Cine FAQ.
>
> Surely you have a lot of free time now that you are living off your
> Tron Legacy game supply residuals?
>
>
> tm
>
>
Hi Tom,

I would like to work on it, but am a bit busy. It would be nice to add
the pictures referenced in the PDFs.

I wish we got residuals. It was a good deal for the shop though - we
sold a LOT of games...and then bought back the ones we liked.

John :-#)#
> On 1/18/2011 1:15 PM, John Robertson wrote:
>
>> A couple of quick notes:
>>
>> First - *Safety Check*:
>>
>> *These monitors do NOT have any X-Ray protection circuitry* so it is
>> very important that you verify the +/- 18 volt regulators are working by
>> checking for +18VDC at L1 and -18VDC at R87 or C32. When either
>> regulator fails the voltage goes from approx 18KV to 24KV, if both fail
>> the HV could go as high as 30KV. So it is rather important to check this
>> out...
>>
>> Second - common problems:
>>
>> A) Popping breakers. We are assuming here that you have diode checked
>> all the diodes and transistors including the short circuit protection
>> transistors Q9, 12, 2 & 11 and none are shorted.
>>
>> 1) Unplug yoke (removes load from output transistors), power up, and
>> check the voltage @ the emitters of Q17 and Q13 - this voltage must be
>> very close to +0.6VDC. If off then replace all three 2N5210s (cheap and
>> quick fix) as it isn't worth the time to figure out which one has failed.
>>
>> 2) If emitter voltages are good then check collector of Q8(Q3) - should
>> be close to 0.8VDC, and the voltage at the collector of Q7(Q4) should be
>> approx -1.3VDC. If the voltage of Q7(Q4) is not within 0.6VDC of the
>> voltage at Q8's(Q3) collector, then replace diodes CR15 - CR17 (CR4 -
>> CR6) and try again.
>>
>> B) Missing voltages from HV transformer - check (be gentle here the
>> wires are fragile!) all the very fine wires for breaks at the solder tie
>> pins. If broken then burn off the insulation with a lighter, and add a
>> small extension wire to the pin then solder the cleaned fine wires to
>> this. Leave a bit of flex room for the wires by have a small bend in the
>> fine wires to avoid future breakage.
>>
>> Hope this helps someone, these are problems I found with two monitors I
>> just fixed and the Vectorbeam monitor book
>> (Vectorbeam_Cinematronics_Monitor_cine_faq_v096.PDF) needs to be updated
>> some day...
>>
>> 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
>> "Old pinballers never die, they just flip out"
>>
>
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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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