Re: 6100 Deflection problem

Hi Ron,

Sorry, I'm sick at home with no schematics to guide me...

I thought there were two fuses on the monitor mother board that are
close to the socket for the yoke (that's the wire/metal thing hanging on
the middle of the picture tube with four wires going to a plug on the
monitor motherboard.

I do not remember the plug # for the yoke, however the yoke only has a
single four wire plug on it to the monitor motherboard - that you can
unplug. DO NOT UNPLUG ANYTHING ELSE!!!

If you are not _/*certain*/_ what a 'yoke' is then don't unplug anything...

If you are new to using 'scopes, then just be sure to not put too high a
signal on the inputs - be sure to use the 10X setting on your probe
(helps protect things in your case - that's enough about that for now) -
and use the corresponding appropriate vertical setting.

If you have the schematic and you have set the game board in "Self-Test"
then you will be getting a pretty simple signal out to your monitor and
you can compare the signal of identical parts from one side to the other
of the 'stereo' XY amplifier. You see the signal on both sides/channels
should be pretty similar other than amplitude and some signal
differences (while in Self-Test only!). This is where a Dual-Trace
'scope is handy.

As you are new to using a scope I would recommend that you turn the game
OFF before moving the probes to a new location, only turning the game
power on when you are sure that you have not shorted the porbe across
two legs of a transistor for example. By leaving the game in Self-Test,
then each time you turn it on it will return to the same screen.

Ron Matuszak wrote:
> Ok, bear with me I just got my scope last week. Its a Tek 465. I
> bought it to help me fix this game.
>
> Where do I hook my scope to on the deflection board ? The deflection
> board I have is P339. Where are the yoke protection fuses ? The other
> board numbers are HV P329, Neck P315. I forgot to add I have the
> LV2000 installed also. When you say to unplug the yoke. Do you mean
> unplug P500 and J501 from the neck board ? Sorry if these are stupid
> questions. This is my first Color Vector and I don't want to screw it
> up. The G05's are alot easier.
>
> -Ron
>
>
>
> ----- Original Message -----
>
> *From:* John Robertson <mailto:pinball@telus.net>
> *To:* vectorlist@vectorlist.org <mailto:vectorlist@vectorlist.org>
> *Sent:* Saturday, February 02, 2008 2:43 PM
> *Subject:* Re: VECTOR: 6100 Deflection problem
>
> Ron Matuszak wrote:
>> I have a 6100 that was dead when I bought it. It's in a Gravitar.
>> My problem is, I only have delfection in the upper right of the
>> monitor (X+ and Y+). I have swapped the transistors to both
>> sides. No change. The spot killer isn't lit. It's not blowing
>> fuses. I did the following on it.
>>
>> Full cap kit
>> Reflowed the wires for the transistors
>> Checked for cold solder joints
>> Reflowed all the conector pins on the deflection board
>> Tried to adjust the monitor using the pots on the board
>> Double/triple checked all of the chassis transistors (they're good)
>>
>> I checked the X and Y out on the Gravitar board using my scope
>> and game looks good. It has full deflection. I was able to
>> finally play a game that way. I'm thinking it has to be the
>> monitor. Any ideas on what I'm missing ?
>>
>>
>> -Ron
>>
> Did you check the yoke protection fuses for continuity/bad grip?
> Also, you can use you scope on the deflection board to see if the
> signal is getting through.
>
> Remember that XY monitors are virtually identical to audio
> amplifiers - roughly the same drive and frequency response is just
> a bit higher...
>
> You can run the monitor with the yoke unplugged for example (no
> load condition), just be sure to have the driver transistors
> plugged in.
>
> 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"
>
>

-- 
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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