BOP Head Not Rotating

caligirl

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New to having to dig deep into this machine(not mine). Was cleaning and doing an LED install. When I put everything back together the head motor/switch error comes on. Motor does not try moving. It had been working fine earlier in the day.
-Unplugged the moter and tested for 12v on the in and did not get any v.
-Checked fused, none bad.
-Checked switches in head, all test good.
-All motor and head switch wiring and diodes look to be firmly attatched.

In test mode it gives an option of 'Manual' under head test. Should this allow me to move the head freely? I could not.

Does the switch need to be open or closed for the motor to run. Is there an external switch that I am not seeing?

I have a manual but no scematics. Manual says, linked to connector J122-4. Checked for voltage at the pin, seems to be none. Although I did this late in the day, and will do again tomorrow, as I was mentally exhausted by that point I will be looking it over this evening, but any help that will push me in the right direction would be appriciated.

Edit: I have seen that there maybe a need to reflow on the relayboard for the head, but I read this is a solution to an improper working, or one directional spinning head. The head does not spin at all.
 
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The relay board is what controls the motion of the head and is a problematic board. Reflow the solder on the header pins anyway for good measure.

If you still lack power coming down that rail then you need to look at transistor Q20 and test it. BE very much aware transistors can test good in circuit so while it's a pain to remove the board - you really should test the transistor OUT of circuit. While the board is out, check all molex headers as the GI headers are infamous for developing cold solder joints.

If you have power on that rail and if it still doesn't work properly - then refer to page 64 of the manual.
 
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BTW I should have also mentioned converting that BOP to LED is going to look like garbage unless you've acquired or personally patched the ROMS with the LED Ghost/flicker fix. If you didn't your customer won't be real happy your job (and rightfully so YECH!).
 
Thanks for the info and help Deadly. I hadn't yet found the section of the manual you pointed out, until you pointed it out.
I went back today, and on fire up the head started spinning, but didnt stop. That was a symptom I had read about of the relay board. I reflowed the relay board and it seemed to resolve the problem.
Yeah first LED conversion for myself and 'customer'. I usually work on just my games and friends games, but in this case it was a volunteer position that has begun to pay, works well for us both, they dont have to pay a high rate for years of experience, and I get more hands on on unfamiliar machines and learn more everyday, and get enough to cover gas, toll, lunch, and a bit of pocket change. I'm not new to electronics, and real good at mechanics, and I know when to say 'I dont know' or 'I'm not comfortable' so I dont do damage.

As for the LED issue, yes the ghosting issue. I had briefly read a bit on it, but will have to go back through some of the LED discussions. They bought a cointaker kit. Not much noticable ghosting except for the 'cool whites' and they are terrible, its as if they are more full on than being a ghost. Thanks for info that there is possibly a way to make this go away. I will look into it.
For myself, the preference is LED on inserts, and selectivly in backboxes, but its the customers first chance to really see it, and to decide if they want to convert other machines, of do partial conversions. If someone is paying me to do it, its not about my opinion or preference, I'll do the work.
As for the experience, what a tedious process! I would say 1 of every 8-10 bulbs work the first time you install it. The obvious issue of directionality, but the more time consuming tedious task is that on all the 555 base lamps, making sure the wires were meeting the contacts, and that they were solid. Sometimes I would get it to work, but a slight nudge and the lamp was no longer making good contact.
 
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