Jump to content

Mpu 4 issue...


Recommended Posts

Yes you have a short to ground on the tube sensor, pin 2 of the switch inputs on both connectors is...50p tube sensor on the orange connector and autonudge on the black connector.

Looking at the schematic you will see the switch inputs are 8x4 group and the DIL switches are 8x2 group. 8 data read lines and 6 enables.

I think the DIL switches are read less frequently than the other inputs.

  • Like 1
Link to post
Share on other sites
  • Replies 53
  • Created
  • Last Reply

Top Posters In This Topic

Top Posters In This Topic

Popular Posts

Right guys one more day gone by working on this. Update changed board for one i tried before  unplugged all sensors and changed the dip settings .. BINGO 50P PAY OUT And you don't have to ha

Could be a dip switch setting  Or maybe as 50ps are low it pays 10s as a preference    I don't know. I am just  chucking ideas out    Your making progress its awesome   

A short circuit between either the 12 volt supply or ground pins, and the output or enable pins on any of those coin level sensors would cause havoc with the switch inputs, including the DIL switches.

Posted Images

Just a quick update reading back about the difference between the make of sensor after looking at the ten different sensors ive tried

Eight out of the ten are sure are j.p.m ones

I've got two barcrest sensors wow they look so alike if it wasn't for the label on the bottom saying j.p.m or barcrest I couldn't have known the difference.

Any way I've done just what quattrohead as said un plugged all sensor and the fault with it holding on its own seems to have gone so the two barcrest sensor i plugged back in one to the 10p sensor loom and the other to the 50p sensor loom. To see if the fault with it holding on its own comes back no it seems to have stopped that fault with it holding on its own.

So like you guys have said that the barcrest sensors are not the same as j.p.m which as been makeing it behave like this crazy I would have never thought this I cant believe it.

Any way its still not paying out 50p ? Which was the very first fault any one got any information why.

Its  is paying out 10p 

I'm back in the garage again today looking at why this just will not pay out 50p 

Any help at knowing why  this will not pay 50p out will be much appreciated

 

 

 

Link to post
Share on other sites

Big thank you to 👍👍👍👍👍👍

Quattrohead 

Nick 

CanonMan 

Warlord 

Stonechat 

Netdent 

For getting me to still point thank you guys your information as been fantastic 👏 

Just the last thing now to get the 50p paying out

Edited by Joe1
  • Like 1
Link to post
Share on other sites

Could be a dip switch setting 

Or maybe as 50ps are low it pays 10s as a preference 

 

I don't know. I am just  chucking ideas out 

 

Your making progress its awesome 

 

Stay safe 

 

 

  • Like 2
Link to post
Share on other sites
1 hour ago, riche100 said:

Maybe as 50ps are low it pays 10s as a preference.

 

I think you're right with that.

If it thinks the 50p tube is empty then it pays in 10p coins instead. 

Pop the correct working sensor on the 50p tube and the fault should disappear. 

Edited by CanonMan
  • Like 2
Link to post
Share on other sites

Yes it will prefer to pay out 10p, that's the way arcades ran back then. Our goal was to sell as many 10p coins as possible, hated changing them back to notes.

These early MPU4 games just read the tube level and that was it, later on they started to count the coins after dropping below the level....well that was the plan.

However, Ready Steady Go was terrible for always running out of 50p coins because it didn't count properly.

I tried moving the sensors up to the top of the tube and it made no difference.

  • Like 2
Link to post
Share on other sites

Yes thats fully what ive always know if the tube sensor is out it will not pay that coin out.

so closing the sensor off its reading full 

Well two more hours in and with me only haveing two correct barcrest sensors that is what I've done 

Tried it in the 10p with the sensor closed yes pays 10p out

Tried it with the token with sensor closed yes pays token out

Tried it with the 50p with the sensor closed 

No nothing just will not pay 50p out.

Put it into test tried all payouts yes all pay out as should.

All dips are set to off

Looking inside nothing on dip setting which you can get it to pay 50p out first or at all 

Sure the dips were all set off when I got it not unless I've knock it when trying the other board

But it was paying 50p out fine when I got it 

Any more thoughts 🤔 

 

 

Edited by Joe1
Link to post
Share on other sites

Thinking back on most of the machines when opening and closing the tube sensors

You tend to hear a click the ones im using im not hearing nothing when open or closed I know you get this click on j.p.m machines.

Wondering now if the tube sensors are faulty 

 

Link to post
Share on other sites
On 11/14/2020 at 1:58 PM, Joe1 said:

Joe i assume you have more than £4 saved in the bank when you expect it to pay in 50p s ?my stc will pay only 10ps upto £4 anything over and it chucks out 50ps 

 

  • Like 1
Link to post
Share on other sites

It's an optical switch so no microswitch click.

It should pay 50p out if there is no sensor on the 10p tube AND the 50p sensor is closed.

BTW quick simple test is open/close, as in tilt the sensor on the token tube, the TT lamp will flash when it thinks tokens are low.

Or use the built in switch test....the tools are there, understand and use them. Grab the MPU4 manual and read it.

Link to post
Share on other sites

Hey Joe

Nice one all for the help and suggestions, as it happens like Joe I had a mix of Barcrest and JPM sensors in a few machines which just swapped over now 🙂 sadly no difference on my lot, but one potential error to rule out down the line.

Cheers Joe and all for the advice, I do love this forum it is a god send 🙂👍

Link to post
Share on other sites

Right guys one more day gone by working on this.

Update changed board for one i tried before  unplugged all sensors and changed the dip settings .. BINGO 50P PAY OUT

And you don't have to have, £4 in the bank before it pays out, it pays out anything over 50p

So £1.20 ,pays out as two ×50p 2×10p

So I thought its a got to be a board fault!(even tho i tried this board before and it showed the same fault)

So i thought right put the old board back in with all tube  sensors unplugged and changed the dip setting 

BINGO! works!!!

So its got to be the tubes sensors or the dip setting which was stopping this paying out 50p.

Wow guys got there in the end all the input from you and things to try ive not come across nothing like this before.

But as we all know without the help from guys on this site with information and input which keeps this site what it is.

As you will see £30 as been donated to the site  just for your input and help.

Cheers guys 

 

 

 

Screenshot_20201115-202303_Samsung Internet.jpg

  • Like 2
  • Thanks 1
Link to post
Share on other sites

I would say its the pins / connectors (orange and black ones) as the battery vapours affect and tarnish these, by unplugging and plugging them back in a few times it cleans the coating of and they work and make connection again, this has been well documented on here and always worth spraying them with IPA and unplugging / plugging the connectors a few times...Its a miracle!!!

Link to post
Share on other sites

Yes all up and running like a good one 

Thank you guys 😊 

I wouldn't say by plugging and unplugging it helped the plugs on the board its  been in and out more time than the wife as  been to the cash point with my bank card.

Its got to be  the tube sensors

But I would put money on the dip switch setting

Which ever one well!

Shes up and running which i thank you all who have had a  input by my token of appreciation to the site 👍👍👍

Cheers 🍻 

 

  • Like 1
Link to post
Share on other sites
3 hours ago, sulzerned said:

Top man Joe thats a really nice decent gesture for this forum .glad youve sorted out the issues with stc .making me wonder if my payouts over £4 are to do with a rom version or not now 🤔

Unsure of that one nick but this one here will pay 50p coins 

out on just haveing 50p in the bank

So maybe its down to which rom version is running.

Link to post
Share on other sites

Software version STC 2.5, maybe STC 2.1 too. Which one do you have ?

DIL bank1, SW3 = Pot to bank

DIL bank2, SW1 = 10p payout priority
DIL bank2, SW2 = Auto-hold enable
DIL bank2, SW3 = Change for quid
DIL bank2, SW4 = No credit display inhibit
DIL bank2, SW5 = NU
DIL bank2, SW6 = Coin alarm inhibit
DIL bank2, SW7 = Gamble to tokens when low
DIL bank2, SW8 = Single coin entry

 

Link to post
Share on other sites
6 hours ago, quattrohead said:

Software version STC 2.5, maybe STC 2.1 too. Which one do you have ?

DIL bank1, SW3 = Pot to bank

DIL bank2, SW1 = 10p payout priority
DIL bank2, SW2 = Auto-hold enable
DIL bank2, SW3 = Change for quid
DIL bank2, SW4 = No credit display inhibit
DIL bank2, SW5 = NU
DIL bank2, SW6 = Coin alarm inhibit
DIL bank2, SW7 = Gamble to tokens when low
DIL bank2, SW8 = Single coin entry

 

Unsure which software version mine is running 

Been at work all day but I will have a look 

And check my dips  to see if they match these ones.

Which version you running.

It would be good to know  what me and your good self and nick are all running.

 

Edited by Joe1
Link to post
Share on other sites
1 hour ago, CanonMan said:

....which IIRC makes it pay out in 10p coins instead of 50p coins.

Exactly, was also known as arcade payout sometimes as it paid 10p over any other coin if possible.

My STC is running 2.5. I used to have a 2.1 cart too but lost it in a move. The obvious differences were the payout slides were super slow and the JP tune was borked up on 2.1

Link to post
Share on other sites

Announcements


×
×
  • Create New...