Cinematronics/rock ola armor attack pcb and condor cp573help.

ChrisCopper

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Cinematronics/rock ola armor attack pcb and condor cp573help.

hey guys,

im usually offering advice over in the monitor section but today I need some help from anyone that has worked on one of these cocktails.

so I have rebuilt the power supply, the condor cp573 fully and have all of my voltages. I have also rebuilt my monitor and I Have high voltage and the monitor seems to be working fully, its not breaking the switch fuses, or anything like that.

when I connect the audio pcb or the game pcb, my 5vdc rail drops to 2.04ish vdc. this caused me to go through the power supply again and again, but I have put in a new LM723, I have tried several different 2n6055, 4004's 3055's, etc and the same result the 5vdc rail loads down heavily when the sound board is connected.

Now, my actual ccpu is messed, when I test it outside of the game I get a solid lit red led. I will deal with that after, but when I connect it by it self. Now when i connect the ccpu to the power supply without the audio board, just by itself it loads the 5vdc rail right down to like 1.3vdc.

so I suppose my issue is with my power supply. at least in that respect.

has anyone encountered this? could the 8008 diodes be the issue? Or maybe the 1N5804's? the 8008s seem to the the ones rectifying the 5vdc all of my other voltages are accurate and correct. I have plus and minus 30vdc unloaded, and 6.3 is fine.

I repair electronics all day but this is stumping me here and I not sure I get it. Ive tried these tests with the monitor connected and disconnected same result.

when I do plug in the audio board and its only getting the loaded 2.04vdc its making the chopper sound sort of over and over.

the diodes are literally the only thing I have not replaced. I have some FR307 fast heavy duty rectifier diodes, I wonder if they will work in place of the 1n5804's?

I seen another thread where a fellow had this exact issue but there was no resolution posted.

I am going to be also for tips on repairing the ccpu once i fiqure this out!

thanks guys.
 

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I haven't worked on my Condor power supply, but if the voltage is good until you hook up the board, either the power supply is defective, the board is drawing WAY too much current, or your connections are bad.

My first guess would be your power supply. Rather than plugging it into the PCB, try plugging a known load across it... something like a 10 ohm 10W resistor. That would draw only 0.5A from the PS, which it should have absolutely no problem doing.

If you have good voltage without a load, but droops with a load, I'd guess it's a bad Q1. It's possible a bad CR13 could cause a similar problem too. With a load connected, check voltage from the collector of Q1 to GND, and base of Q1 to GND. If you have good voltages at the collector and base, but your emitter voltage (+5v output) is bad, then Q1 is bad.

If it looks like the voltage to the collector and/or base are drooping, I'd make sure the transformer is good (measure AC voltage with the load connected)... but I doubt that's the problem. If all that checks out, I'd check CR13. I see an oscilloscope in your avatar, so you could easily use it to check whether the diode is/isn't working properly.

DogP
 
yes, as mentioned Q1 was swapped with same result. im going to check that diode. has to be the culprit. when i test the audio board out of the game on a bench supply the 5vdc is` fine.

ill report back when i check it out.

thx..
 
I dont trust those condor supplies as far as I can throw them. I'd do the load test that DogP mentioned and if it is the supply add in a switcher for +5 only. Hell, maybe even the other low voltages.

In my book anything Condor thats defective gets kicked to the curb and thats coming from a tech in the coin-op industry since 1984.

They are not worth the effort to get them working right.
 
ok, update.

i took cr13 out which was an actual mr8008 diode. i put it on a curve tracer and sure enough as soon as load was present the thing takes a total dump.

luckily i have 2 of these supplies here so i swapped it out and boom back in business.

i repaired my ccpu board, and audio board now when i fire the game the led comes on and quickly goes off and stays off. 5.3vdc is present all over the boards.

no display however. i have high voltage and the circuit breakers are not tripping, but even if i turn the brightness all the way up i see nothing. also the game isnt playing blind either i can coin it up and nothing.

i pulled the monitor board and omg what a mess. someone has totally mangled this thing, ive already started to clean it up as you can see. its like they used plumbing solder or something its so weird.

notice also all of the cut and then retaped wires. im going to clean up those connections as well with proper joints. some of them are not even taped. wow.

any tips from anyone that has worked on this monitor greatly appreciated. !!!
 

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Exorcise this ... (buy or borrow) ->

http://www.biltronix.com/cinexor.html

exorciser_cropped.jpg
 
I just want to add a fix to this as well for future reference. Hopefully it helps someone. I had the same problem with the Condor PS in my Star Castle. Inputs were solid, and unloaded the 5v was great. Under load it dropped to .8 volts. I also changed the Q1, LM723, and all the diodes on the output side. Checked all the resistors as well. Couldn't get it figured out. UNTIL I fiddled with the plug thinking it could be making poor contact, the females were sort of sprung open. Well the 5v cleaned up on me and the board blinked once. So I repinned it, but that wasn't the problem. So I resoldered ALL the connections anywhere near the plug and that got it. Apparently fiddling with the plug flexed the board and made contact somewhere, either in a broken trace or a cold or broken solder joint. So double check all those solder joints! And no, I couldn't find the break using continuity... keep in mind I had the 5v until it was under load. Hopefully this helps someone!
 
I just want to add a fix to this as well for future reference. Hopefully it helps someone. I had the same problem with the Condor PS in my Star Castle. Inputs were solid, and unloaded the 5v was great. Under load it dropped to .8 volts. I also changed the Q1, LM723, and all the diodes on the output side. Checked all the resistors as well. Couldn't get it figured out. UNTIL I fiddled with the plug thinking it could be making poor contact, the females were sort of sprung open. Well the 5v cleaned up on me and the board blinked once. So I repinned it, but that wasn't the problem. So I resoldered ALL the connections anywhere near the plug and that got it. Apparently fiddling with the plug flexed the board and made contact somewhere, either in a broken trace or a cold or broken solder joint. So double check all those solder joints! And no, I couldn't find the break using continuity... keep in mind I had the 5v until it was under load. Hopefully this helps someone!
I had the same issue and couldn't ever figure it out. So I just said "screw it" and threw a switcher in there to get steady 5v under load. Glad you figured it out the right way.
 
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