Author Topic: Machine not firing up Urrrrr. MPU error code? (Read 4317 times)

ilovekittens · « **on:** April 22, 2019, 07:31:30 PM »

I can leave my machine unplugged for months at a time and when I'm in the mood to play it doesn't work

The machine turns on but does not go threw the normal steps, reels don't spin, no display. The second yellow light is flashing slowly on my MPU board and when the light goes off the first yellow light and bottom red light flash together. Any idea what me problem could be? Thanks for any help. Last time I used it I had to replace the battery and then it worked fine, so not sure how any connections would magically fail.

erbs · « **Reply #1 on:** April 22, 2019, 07:35:52 PM »

If you had the machine unplugged for months I would start by checking the battery. If its less than 2.80v it needs to be changed. Has the Varta battery been removed? It does not need to be replaced.

ilovekittens · « **Reply #2 on:** April 22, 2019, 07:55:51 PM »

Changed out battery, still same error

erbs · « **Reply #3 on:** April 22, 2019, 08:06:30 PM »

Has the green varta battery been removed?

Cashen87 · « **Reply #4 on:** April 23, 2019, 04:11:10 AM »

Quote from: erbs on April 22, 2019, 08:06:30 PM

Has the green varta battery been removed?

Have a question about this coin battery on the main board. If i removed the green Varta battery do i have to remove this coin battery to?

erbs · « **Reply #5 on:** April 23, 2019, 04:19:40 AM »

Remove the coin battery and check it. Post a pic of your mpu board. The varta needs to be removed permanently. If you have the enhanced board u16 needs to be removed also.

ilovekittens · « **Reply #6 on:** April 23, 2019, 04:29:55 PM »

Quote from: erbs on April 22, 2019, 08:06:30 PM

Has the green varta battery been removed?

Not unless if fell off from lack of use, like I said, machine worked fine months ago, plugged it back in now I'm getting these flashing lights of doom. I figured the blinking lights on the board are a diagnosis code of some sort.
I looked @ my board green varta battery still in place. Are you saying I need to remove it?

therockinelvis · « **Reply #7 on:** April 23, 2019, 04:52:46 PM »

Is you lcd screen showing any messages? Like ram error or low battery? Is your door closed ALL the way with the latch firmly down?

Amechanic · « **Reply #8 on:** April 23, 2019, 05:06:26 PM »

The Green Varta Battery when dead will leak acid and damage the board traces under the battery..

ilovekittens · « **Reply #9 on:** April 23, 2019, 05:37:55 PM »

No LCD display at all, door closed and latch is down. MPU pic included

erbs · « **Reply #10 on:** April 23, 2019, 05:39:30 PM »

Do you know what MPU board you have? If its a 502 or 504 all you need to do is remove the varta. If you have the 1270 enhanced MPU you would remove the varta and the u-16 component. If your not sure post a pic of your board.

erbs · « **Reply #11 on:** April 23, 2019, 05:41:20 PM »

You have a 502 or 504. Just remove the varta, nothing else.

ilovekittens · « **Reply #12 on:** April 23, 2019, 06:28:16 PM »

Varta removed, no change, still same error

cowboygames · « **Reply #13 on:** April 23, 2019, 06:36:07 PM »

Does the cabinet light come on when you open the door? Do any flourescent lights come on when you turn the game on? You may have a bad power supply. You can check to make sure it's not loose. It's behind the reels on the back wall of 5he cabinet

ilovekittens · « **Reply #14 on:** April 23, 2019, 06:55:40 PM »

The light are on, but no displays are on. I did remove the reels and look at the power supply, did not seem loose. Thanks for the help thus far.

erbs · « **Reply #15 on:** April 23, 2019, 07:00:57 PM »

Sounds like a bad Power supply. Very common.

Amechanic · « **Reply #16 on:** April 23, 2019, 07:06:13 PM »

Was just about to say the same thing, bad power supply behind the reels. No display lights is the sign of the problem..

ilovekittens · « **Reply #17 on:** April 23, 2019, 07:35:50 PM »

Any way to test that the power supply is shot? Any members got one to sell? Shoot me a PM.

cowboygames · « **Reply #18 on:** April 23, 2019, 07:44:47 PM »

As with anything electrical, confirm ALL plugs are tight and snug before declaring bad parts. And just to be sure, you replaced the coin battery with a new one, correct?

Amechanic · « **Reply #19 on:** April 23, 2019, 07:46:27 PM »

Only way I know to test one is to swap it to another machine.. Check on the main page at the top for sponcers. Midwest slots, slot rush or Ohio gaming.

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Author Topic: Machine not firing up Urrrrr. MPU error code? (Read 4317 times)