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ant2110

Member Since 10 Feb 2014
Offline Last Active Oct 16 2020 10:19 PM
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Posts I've Made

In Topic: Where did my post go?

07 October 2020 - 06:31 PM

Thanks - feel free to delete this one now :-)


In Topic: Barcrest MPU4 machine - dead

04 October 2020 - 02:57 PM

Thanks for the advise. The fuses are making good contact. The outputs are correct on the output connector of the PSU.
I think I'll need to check the voltages at other places around the machine but do not know where the test points are. Apart from the main reel board where 5v is marked.

Do you know if any lamps are directly connected to power and not controlled by the MPU4 processor board? Coin slot maybe?

Like I said nothing is lit.

Any further suggestions appreciated

Ant.

In Topic: MPU4 problems after battery replacement

11 March 2020 - 10:15 AM

Hi, 

 

Thanks for the reply, I have since now fixed the issue. 

 

My track repair work was fine but putting the MPU4  back in the cabinet the refill key switch cabling had become shorted on the metal cabinet internals. 

 

This had burnt up 47ohm R85 & 4.7v zener  diode ZD24 in the MPU4. 

 

With these gone it knocked out all the door switches, coin detect, and some of the game buttons....

 

Replaced these two components and tested okay - she lives again.


In Topic: MPU4 problems after battery replacement

29 February 2020 - 11:05 PM

All fine. All power rails as should be.

In Topic: MPU4 problems after battery replacement

29 February 2020 - 08:19 AM

Yeah I did already check all connectors. They are all correct.