Author Topic: Coin Optics and Hopper Optic All Read Zero (Read 23622 times)

rokgpsman · « **Reply #80 on:** April 22, 2018, 06:30:59 PM »

Quote from: Trooper11040 on April 22, 2018, 06:26:27 PM

unfortunately I have to agree....it will be tough finding a new MPU and motherboard for this machine

Maybe not, knagl said the pe+ video slot was very similar to the poker slot. So an ordinary pe+ mpu board might work fine, just move your game eproms over to the new board. But since so much about your machine is working, you may only have a problem with the "+Vb" voltage, so you might be able to replace the bad component on the mpu board if that's the problem.

Figure out a way to add a couple of long insulated wires to the mpu, they can be small gauge, connect them on the mpu board where the "Vb" voltage is made and run the wires out so you can attach a meter. Power up the machine and see if the 9 volts dc is there.

Trooper11040 · « **Reply #81 on:** April 22, 2018, 06:44:57 PM »

lol looking at my MPU now...trying to find it on here. I should have become an electronics guy!

Trooper11040 · « **Reply #82 on:** April 22, 2018, 06:46:02 PM »

Ok found it. Letâ€™s give this a test!

rokgpsman · « **Reply #83 on:** April 22, 2018, 06:48:08 PM »

Post a photo of your mpu board if you aren't sure about it, the area near where the transformer connects to the mpu. I think it is there somewhere. The drawings I am posting are for a certain mpu board, it may not be exactly the same as yours, IGT changed them somewhat over the years.

If you see a burned or seriously darkened part that might be what you are looking for...

rokgpsman · « **Reply #84 on:** April 22, 2018, 06:50:08 PM »

Quote from: Trooper11040 on April 22, 2018, 06:46:02 PM

Ok found it. Letâ€™s give this a test!

.

Badbaud · « **Reply #85 on:** April 22, 2018, 07:00:36 PM »

Nope, every one sells those boards, I even sell a PE+ multi board that has 5 poker games on it.

Trooper11040 · « **Reply #86 on:** April 22, 2018, 07:02:15 PM »

ok..so ill solder 2 test wires to each end of this diode? (D2)

rokgpsman · « **Reply #87 on:** April 22, 2018, 07:04:49 PM »

There's a "VB" test point right there, that's what you want to connect to, so yes I think it is D2.

Badbaud · « **Reply #88 on:** April 22, 2018, 07:07:37 PM »

+Vb and VB GND

Logic ground for chips is another ground.
Logic ground and Vb ground are not connected to each other anywhere.

Trooper11040 · « **Reply #89 on:** April 22, 2018, 07:08:12 PM »

Quote from: rokgpsman on April 22, 2018, 07:04:49 PM

There's a "VB" test point right there, that's what you want to connect to, so it looks like it is D3 on your board.

ill need a little drawing like you always do to show where to put each test lead...lol

btw..you guys on this group are AMAZING!

rokgpsman · « **Reply #90 on:** April 22, 2018, 07:09:13 PM »

I typo'd on my prev message, I think it is D2 (not D3). But your board has special pads for test points, see the VB and B Gnd pads?

Badbaud · « **Reply #91 on:** April 22, 2018, 07:13:23 PM »

Solder the test wires directly to the leads of the Vb diode, that diode is the Tranzorb that protects the Vb circuitry from voltage spikes.

rokgpsman · « **Reply #92 on:** April 22, 2018, 07:14:49 PM »

or connect here, you can melt the solder and poke your test wire into the test point pad.

Badbaud · « **Reply #93 on:** April 22, 2018, 07:17:58 PM »

No, those pads don't go to the Vb tranzorb. The one on the right goes to logic ground.

rokgpsman · « **Reply #94 on:** April 22, 2018, 07:21:10 PM »

Quote from: Badbaud on April 22, 2018, 07:00:36 PM

Nope, every one sells those boards, I even sell a PE+ multi board that has 5 poker games on it.

That will be what he wants after he gets this thing running. Poker is way more fun than slots.

rokgpsman · « **Reply #95 on:** April 22, 2018, 07:24:09 PM »

Quote from: Badbaud on April 22, 2018, 07:17:58 PM

No, those pads don't go to the Vb tranzorb. The one on the right goes to logic ground.

I'm not following what you mean, it looks like the board copper traces go directly from each end of D2 to both of those pads I show in photo?? Which pad is not connected to D2 anode or cathode?

Trooper11040 · « **Reply #96 on:** April 22, 2018, 07:31:53 PM »

I think vB is on its own trace on the left

Trooper11040 · « **Reply #97 on:** April 22, 2018, 07:49:34 PM »

D2 def. traces to a logic board...see attached photo:

Badbaud · « **Reply #98 on:** April 22, 2018, 08:03:00 PM »

+Vb and Vb GND ref des refer to the leads of the diode as being the test points not the pad on the right which, if you follow it carefully goes to the anode side of the Tranzorb for the 5 volt logic.

Trooper11040 · « **Reply #99 on:** April 22, 2018, 08:05:49 PM »

Quote from: Badbaud on April 22, 2018, 08:03:00 PM

+Vb and Vb GND ref des refer to the leads of the diode as being the test points not the pad on the right which, if you follow it carefully goes to the anode side of the Tranzorb for the 5 volt logic.

ok perfect...so ill add 2 test leads to D3..one on each end, making them long enough to test once everything is plugged back into the motherboard

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Author Topic: Coin Optics and Hopper Optic All Read Zero (Read 23622 times)