Jump to content
Due to a large amount of spamers, accounts will now have to be approved by the Admins so please be patient. ×
  • 0
IGNORED

Dead WH2O Machine


Talby

Question

I am sure that this topic has well and truly been covered before so can anyone point me in the right direction of an old thread or where do I start with troubleshooting a machine that does pretty much nothing when the power is turned on?

 

It was working fine last night until I discovered that the J120 and 121 plugs were arse about. I swapped them back around, one pin is shot but does not have a wire going to it anymore. Machine has died since.

 

At the moment I get three LEDs on the driver PCB and that is it, no display, lights, sound....nothing. No LEDs on the CPU.

 

I have done a very quick visual check of the fuses and they appear fine.

 

Thanks in advance.

Link to comment
Share on other sites

9 answers to this question

Recommended Posts

  • 0
  • Super Moderator

reseat all the conectors

test the fuses with a meter

work throught the pdb test points with your meter

non-booting is a cpu prob, possible you don't have the 5 volts necessary for logic circuits but if cpu leds on then its strange that it won't boot, test points will help to start narrowing it down.

there are 3 leds on the left hand side of cpu board, from top to bottom, the top one should come on briefly then go out, the second one should be flashing quickly and the bottom one should remain lit.

the 120 and 121 plugs shouldn't have effected the cpu board. do the tests and note the results...

Link to comment
Share on other sites

  • 0

Cheers mate. I was pretty sure I was right in thinking that the 120 and 121 plugs (GI) would have nothing to do with it.

 

I have tried a different U6 ROM version and no change.

 

Time to go and play and see what happens.

Link to comment
Share on other sites

  • 0

Solved for now.

 

After swapping CPU and driver boards it appeared that the driver was not supplying power. Rear of board looked OK. I changed the F112 fuse even though it looked OK and hey presto.......power. Such a simple fix that I should have tried first and would have saved me hours and hours of stuffing around. Live and learn I spose.

 

I am correct in assuming that if I put a 5 amp slo-blow fuse in where a 7 amp slo-blow is meant to go that it just means the fuse will blow quicker than the 7 amp. I will be buying some fuses tomorrow but for the very short term, is this OK????

Link to comment
Share on other sites

  • 0
I am correct in assuming that if I put a 5 amp slo-blow fuse in where a 7 amp slo-blow is meant to go that it just means the fuse will blow quicker than the 7 amp. I will be buying some fuses tomorrow but for the very short term, is this OK????

 

Yes, you will not hurt anything by having a lower rated fuse. It'll just cost you a few dollars in fuses.

 

If you put a higher rated fuse in however, things could get ugly.

Link to comment
Share on other sites

  • 0
  • Super Moderator
Solved for now.

 

After swapping CPU and driver boards it appeared that the driver was not supplying power. Rear of board looked OK. I changed the F112 fuse even though it looked OK and hey presto.......power. Such a simple fix that I should have tried first and would have saved me hours and hours of stuffing around. Live and learn I spose.

 

I am correct in assuming that if I put a 5 amp slo-blow fuse in where a 7 amp slo-blow is meant to go that it just means the fuse will blow quicker than the 7 amp. I will be buying some fuses tomorrow but for the very short term, is this OK????

 

yep no dramas with the lower rated fuse. from bitter and frustrated experience the first cause of problems is always connectors and then fuses. you have to pull them (fuses) out to test them properly. it's bloody handy to have boards to swap around as well and kudos to you for trying this. i solved a long standing reset problem today by swapping in a different DMD, hey presto, no more resets, shame i wasted so much time rebuilding the power driver board FFS. anyway, the only way to learn is to have the problems and then solve them yourself. these machines 15 years old now and more and more problems to come, no point owning one unless you are prepared to get dirty and deal with the probs :)

Link to comment
Share on other sites

  • 0

Certainly helps having two sets of boards to play with (I currently have two WH2O machines). Alot of frigging around changing them but certainly answers alot of questions knowing one board works in both machines whilst the other doen't work in either. More reason to own at least two machines as well of the same breed and vintage, well that's what I tell the bride.

 

Amazing the differences in the two WH2O machines though when I started really looking hard at the boards. Both machines had plugs on incorrect connectors with even a couple of wires on wrong plugs....best thing I ever did was print out the manual as opposed to assuming that plugs were in the right spots just because things seemed to be working.

 

Anyone got any tips for tracking down a short in a string of lights? I have gone through a few fuses now and don't feel like wasting anymore. Everything is pointing to a short somewhere on the playfield. At one stage the lights would go off then come back on if I tapped the playfield then after a few minutes the fuse would blow but do you think I can find the problem.

Link to comment
Share on other sites

  • 0
  • Super Moderator
Certainly helps having two sets of boards to play with (I currently have two WH2O machines). Alot of frigging around changing them but certainly answers alot of questions knowing one board works in both machines whilst the other doen't work in either. More reason to own at least two machines as well of the same breed and vintage, well that's what I tell the bride.

 

Amazing the differences in the two WH2O machines though when I started really looking hard at the boards. Both machines had plugs on incorrect connectors with even a couple of wires on wrong plugs....best thing I ever did was print out the manual as opposed to assuming that plugs were in the right spots just because things seemed to be working.

 

Anyone got any tips for tracking down a short in a string of lights? I have gone through a few fuses now and don't feel like wasting anymore. Everything is pointing to a short somewhere on the playfield. At one stage the lights would go off then come back on if I tapped the playfield then after a few minutes the fuse would blow but do you think I can find the problem.

 

when you say string of lights is it a GI string? - if so try and figure out which one (use alligator clips to try them one at a time - there are 5) it does sound like an intermittent touch so carefully inspect each socket in the string, try a new set of bulbs in the string and see if this fixes it, if you still can't find it(the short may be in a socket) then you got to start disconecting sockets to try and find the problem one...very painful and time consuming.

 

if it is a feature lamp row or column then check out the lamp matrix probs on http://www.pinrepair.com , you will find this is a bit easier, especially if its the whole row or column that's out.

 

let us know how you go :)

Link to comment
Share on other sites

  • 0

It's a GI string (yellow & yellow & white wires)

 

I have been doing alot of work on the machine over the last week and hopefully it is just something that has come loose somewhere or possibly some solder fallen on a socket or similar. Problem is just finding it. I have some #47 globes on the way so I will change all the globes as suggested and see what happens.

 

A perfect way to spend a Sunday.......tinkering with pinball machines :026:

Link to comment
Share on other sites

  • 0
  • Super Moderator
another thing to keep in mind, if you've had burnt gi connectors and they have been 'fixed', carefully check what they have done as i've seen some pretty dodgy attempts at trace repair (solder blobs etc etc), one of these could have moved when you were swapping boards, plugs. might save some pain :unsure
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    • No registered users viewing this page.
×
×
  • Create New...