Page 1 of 2
system 1 headache
Posted:
Wed Sep 07, 2011 10:03 pm
by oneandasixtenth
well , I dint post here much in fact I have never posted to the repair section because I have never owned a machine
well heres what ive got ...
I've got a pretty nice genie , nothing turned on at first , found the short blowing the 1/4 amp slow blow fuse..that was huge because I am not a electrical engineer ..
well I have gotten all the lights to work , the sound works , the switches make the table scoring work..
but the scores don't light up , and none of the coils fire..
one of the coils plastic insert was melted (upper playfield ) and the lights around that flipper have a little rust on one side..(short?)
I have checked the capacitors on the power board , maybe the driver ?
the battery on the main cpu has a little leakage but no damage , (one diode has a little green on it) ...
any imput , suggestions , would be awesome because this is a real head scratcher...
trade for beach house for a couple days to poke around on her..(genie)?
this is not a re-saler it is one I plan to keep
Thanks for any help
Re: system 1 headache
Posted:
Thu Sep 08, 2011 9:54 am
by inthecan
If you haven't yet you should definitely hit up RevTest here on the boards, he does solid work.
Re: system 1 headache
Posted:
Thu Sep 08, 2011 11:42 am
by revtest
Thanks for the good words! Eric is much better with the Gottlieb's than I am maybe he can help you out, but First get that battery off now if its leaking at all or is even suspect. Sounds like maybe that coil that melted is stuck on (or was) that needs to be addressed then there is the recommended modifications and connector rebuilds. I sent you a PM with some info on system 1's that I have. maybe Nathan could chime in here also I think he has some experience with these.
Re: system 1 headache
Posted:
Thu Sep 08, 2011 11:53 am
by eric
System 1s can be a pain, but with a little work you can get them to run pretty reliably. Before I do anything to a System 1 I always:
-Tie together the ground reference of the power supply, MPU, and driver board.
-Rebuild the 5V section of the power supply or replace it with a modern re-pro power supply.
-Rebuild the connector where the secondary voltages from the transformer enter the power supply.
-Rebuild the connector between the power supply and the MPU.
Re: displays, check the voltages coming off the power supply. Do you see 60V for the displays?
The green stuff on your diode is corrosion - i.e. damage - and will continue to spread and eventually destroy your MPU. This needs to be addressed ASAP.
Re: system 1 headache
Posted:
Thu Sep 08, 2011 1:11 pm
by oneandasixtenth
thanks thanks thanks \
Im off to get a solder sucker .....
i will do the test when I get back ...
also I did a diode test on those suspect diodes , and the read 1875 blink 753 blink 1 in the left corner , but I tested others and those seem to be reading ..... i will get a picture up when I get back
yall rock
Re: system 1 headache
Posted:
Thu Sep 08, 2011 4:25 pm
by eric
Posted:
Thu Sep 08, 2011 5:07 pm
by oneandasixtenth
those are the numbers reading on the digital multi meter..
the rest of the diodes test out great ...I realize that you have the anode and cathode and if you are testing them doors backwords the dmm reads a 1 on the far left side ...
the others I tested around the battery gave a reading around 620..? I think thats good?
also I have both the driver board and the mpu removed and the machine is still plugged in ...I hope i didn't fuck something up here.
should I put the boards back in before testing the power supply? I tested the caps on the power board and they are A+( I have the manual)
going for the test after the removal of the battree
thanks again
beach house is open and it have an elevator
Re: system 1 headache
Posted:
Thu Sep 08, 2011 6:34 pm
by eric
Re: system 1 headache
Posted:
Thu Sep 08, 2011 8:35 pm
by oneandasixtenth
A2P2 PIN 1 5.39V
PIN 2 5.39v
PIN 6 -12.1v
A2P3 PIN 1 .03 this is with the dcv setting at 20
PIN 3 00
PIN 7 00
PIN 8 00
I can send you a bottle of cheep scotch
great info and easy to follow instructions
thats what ive got going
as for the diodes ?
this has the good diode set up ?
Re: system 1 headache
Posted:
Fri Sep 09, 2011 7:52 am
by eric
Looking at the schematics again I realize I gave you bad advice. You need to use the ground reference at A2P2 pin 4 to test voltage at A2P3 pins 7 and 8. Try this and let us know what you see.
The "20" on your multimeter is the max DC voltage it can read. Set it to the next highest range (200?) and test A2P3 pins 1 and 3 again (using ground at A2P3 pin 5).
As for the photos, I'm not sure what you want us to look at. There's definitely battery corrosion on the solder pads where the battery used to be. This will need to be carefully sanded off and neutralized.
Re: system 1 headache
Posted:
Fri Sep 09, 2011 7:55 am
by eric
Also, there's a potentiometer on the power supply at R4. I would dial this back until you see 5.1V at A2P2 pins 1 & 2. 5.39V is a little high.
Re: system 1 headache
Posted:
Fri Sep 09, 2011 10:07 am
by oneandasixtenth
A2P2 PINS SET AT 5.1v
there is no pin at PIN 4
so I stuck the black into that little hole where it looks like a pin should be
and got
PIN 7 AND 8 000
PIN 1 AND 3 000 ( using ground pin 5)
... thats not good?....
you eric , crush it daily don't you ?
Re: system 1 headache
Posted:
Fri Sep 09, 2011 11:28 am
by eric
It's pin 4 on the other connector (A2P2) - the same ground reference you used to measure the 5V. Use this for testing pins 7 and 8 on A2P3.
So it looks like you're missing 60V and 40V which are the display voltages. Is the 1/4 A fuse in the bottom of the cabinet blown?
Re: system 1 headache
Posted:
Fri Sep 09, 2011 11:41 am
by oneandasixtenth
yes it is
I had put a fast blow 1/4 amp (was told it should work) because when i got the game the slow blow was blown...and I could not get another one here .
shit I thought I had that fucker figured out ..I was high on the hog for a min there
shit im headed to coin op to pic some up 1/4 ampers slo blow up
anything else I should get ? diodes ?
I wont be back till saturday night, damit this machine is consuming me
T
Re: system 1 headache
Posted:
Fri Sep 09, 2011 12:56 pm
by eric
No, it needs to be a slo blo fuse. Get a couple in case it blows again while you're troubleshooting.
Dude, you are obsessed with diodes. If it means you'll stop stressing about them, yes, by all means pick some up!
Re: system 1 headache
Posted:
Sat Sep 10, 2011 10:38 pm
by oneandasixtenth
Ok, I put the new 1/4 amp slow blow , it did'nt blow, but on the 60v and 48v st does not show voltage ......
I did notice that the potentiometer on the power supply? it might control the higher voltages? the dial was pinned to one side , full power side!?
and I think i tested it because it seams to not show voltage like the other potentiometer ..
Re: system 1 headache
Posted:
Sun Sep 11, 2011 8:58 am
by eric
R16 is the high voltage pot. Go ahead and see if rotating it changes anything. If not, set your meter to AC voltage and put one lead on the banded side of CR6 and the other on the banded side of CR8. It doesn't matter which lead goes where. You should see 69VAC.
Re: system 1 headache
Posted:
Sun Sep 11, 2011 10:57 am
by oneandasixtenth
R 16 turns fine but the adjustments do nothing to the PIN voltage
also this pot shown no reading at AC voltage
new board or new pot or?
the caps test out good
but man, the power station in the bottom of the machine sure makes a hell of a hum , is that natural?
thanks
Re: system 1 headache
Posted:
Sun Sep 11, 2011 1:21 pm
by eric
You need to measure the AC voltage at diodes CR6 and CR8. Put one meter lead on the banded side of CR6 and the other on the banded side of CR8. Meter set to AC voltage. What do you see?
Is the hum coming from the speaker or the transformer?
Re: system 1 headache
Posted:
Sun Sep 11, 2011 2:16 pm
by oneandasixtenth
CR6 000
CR8 000
its the speaker thats humming
awesome call..
hummm.. i feel like my dmm is broke , nothing ever reads.... then i test a "no for sure" ...dmm not broke
thanks T