Fruit Machine Chat

Hi guys

I have a MPU 6 count ya cash game.
Reacurring error: LCD Meter not found
Replaced twice works for a few months than repeats the error.
Starting to think wiring not meter.

Please be kind this is a silly question.

Where do I start trying to diagnose the wiring issue?
It's spaghetti junction in there.

Many thanks in advance.

SOLVED
just in case it helps anyone else.

Traced wiring from sec meter to top board. Noticed a red cable (I assume power) went into the logo/brand cluster of lights at the top of the door.

The red cable seemed to visit each light hence I assume it was power.

There was one Light clip with no bulb and wouldn't power a bulb. I think it was being used as a junction.

The cable was loose and had an intermittent connection.

I sured up the connection and repositioned so it was out of the way.

Anyone else got a sec meter wired like this??

Double Posting