opt fault on reel 2 and 4

[potty]

Hi, when I switch on my Global King of the swingers machine it comes up with either a fault on reel 2 or 4. The other two reels spin OK but 2and 4 just vibrate and dont move. Tried swapping reel 4 over to 3 but fault stays in position 4. Also there is a louder than normal buzzing coming from motors, Any ideas before I start buying parts?

Are there any engineers in Notts area at reasonable rates?

[potty]

Had mpu out and area around battery is corroded, cleaned it up with solvent and tried again but still getting fault on reel 2( but reel 4 not as bad), has anyone got a replacement mpu Part no. ec600005.H M1A ea600004 013145, any advice would be welcomed please, Carl.

[aaamusements.co.uk]

Had mpu out and area around battery is corroded, cleaned it up with solvent and tried again but still getting fault on reel 2( but reel 4 not as bad), has anyone got a replacement mpu Part no. ec600005.H M1A ea600004 013145, any advice would be welcomed please, Carl.

You should replace it with a decent M1b. Far more reliable.
Still prone to battery damage though!

[potty]

Had mpu out and area around battery is corroded, cleaned it up with solvent and tried again but still getting fault on reel 2( but reel 4 not as bad), has anyone got a replacement mpu Part no. ec600005.H M1A ea600004 013145, any advice would be welcomed please, Carl.

You should replace it with a decent M1b. Far more reliable.
Still prone to battery damage though!

I new to fruit machines can you explain what a M1b is please and where can I get one?

[aaamusements.co.uk]

The modified improved board that replaced the M1a (the one you have).

http://www.eurocoin.co.uk have allegedly got some brand new ones, but you will have to phone them.