Re: Electrohome G08 "blooming"

Try the pots on the HV unit (don't have the faq in front of me). One of
them controls how sensitive it is to shutting down the hv unit when vector
inputs are "off". You may see this same effect when the test mode is going
through sound tests and the screen goes black between tests, the monitor
will bloom when the next sound test starts.
On Sep 9, 2012 7:57 PM, "John Robertson" <pinball@telus.net> wrote:

> Oh, right, the fire maker GO-8. Yeah, the HV diodes are buried in the
> Flyback.
>
> You can check (if you have an HV probe) at the Focus output from that
> transformer - it should be around 10KV according to the schematic - then
> you could check at the anode wire to see if it is double at 20KV or not.
>
> John :-#)#
>
> akswanson@ntelos.net wrote:
>
>>
>> Dont think you can access the HV diode on a G08, unless Im remembering it
>> wrong.
>>
>> > akswanson@ntelos.net wrote:
>> >>
>> >> I dont think the flybacks are available for these. Id cap it, see if
>> >> that fixes it. Make sure the HV is high enough, and the spot killer
>> >> isnt kickin in.
>> >>
>> >
>> > Very unlikely to be the flyback, rather the HV diode is the most common
>> > suspect as previously mentioned...
>> >
>> > Bad HV diodes are usually easy to spot - see if the clear end caps look
>> > overheated, or if you have an IR reader check if the diode gets hot when
>> > running, it should not heat up much at all.
>> >
>> > John :-#)#
>> >>
>> >> >
>> >> > John,
>> >> >
>> >> > When my Asteroids Deluxe's screen was expanding/shrinking it turned
>> >> out to
>> >> > be the HV diode.
>> >> >
>> >> > … Altan
>> >> >
>> >> > On Sep 9, 2012, at 5:32 PM, Zitt Zitterkopf <zittware@hotmail.com>
>> >> wrote:
>> >> >
>> >> >> Have a G08 monitor I’m prepping to put a cap kit on.
>> >> >> I like to debug/test the monitor prior to doing cap kits; and
>> noticed
>> >> >> that this monitor is “expanding” / “shrinking” depending on the
>> >> amount
>> >> >> of vectors on the screen.
>> >> >>
>> >> >> I’m leaning toward the belief that the cap kit will resolve this
>> >> issue;
>> >> >> but wanted to get any other tech advise before I commit to it.
>> >> >>
>> >> >> Anyone have any thoughts as to the cause of such a symptom?
>> >> >> John
>> >> >
>> >> >
>> >>
>> >
>> >
>> >
>> > ------------------------------**------------------------------**
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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 Sun Sep 9 21:47:59 2012