@T-d It come up lovely that - reminds me of my demo man!!
Cheers
kev
Cheers
kev
@T-d It come up lovely that - reminds me of my demo man!!
Cheers
kev
@T-d It come up lovely that - reminds me of my demo man!!
Cheers
kev
hi,yes marsden remember 07710302589 talk soon
@PeteB surely?Does anybody know where i can source a full decal set from? all i can seem to find is the head decals.
Had similar on a Flintstones. Changed caps C20 and C21 - sorted itCould be bad caps on the sound board?
I'd get a donor cab or a newly built cab
The 2803A chip? If I told you they started socketing those buggers on later WPC revisions, would you catch my drift?happy new year everyone. I'm back on with this bloody machine and have replaced everything that has been suggested so far but with no luck. my question is this, anybody had any trouble with the DAC at u20? i was thinking of ordering one but they're not cheap to replace for fun.
also, should i get a self test bong from the audio board itself even if there is no ribbon cable connected?
would love to get this fault cracked so i can get the playfield stripped and sent to chris![]()
The 2803A chip? If I told you they started socketing those buggers on later WPC revisions, would you catch my drift?
They easily die when various things get shorted, best one being GI to switch matrix.
That being said - if you're guessing and don't know, don't throw your money away on guessing - get a logic probe along with your multimeter, and do a test of the CPU board in isolation - https://pinballrehab.com/1-articles...-rework-test/231-testing-wpc-cpu-on-the-bench
Oops, sorry, I got that mixed up.All my switches are working fine no shorts to ground. Would that ic actually cause a phantom sound issue? Have I confused you by saying u20 as I mean the dac on the dcs board not the one on the cpu.
As you said earlier @T-Dawg with no ribbons connected to audio board do you still get the screeching and no bong, ie its isolated to the audio board for def ?I don't even get the bong noisethere's just a small pause then when the first command is sent (entering test or opening the door to give the interlock message) I get full volume nasty screeching and need to turn the machine off because I fear frying the speakers. I have replaced the rectifier diodes, fuses, 10000mfd caps and both regulators. If checked continuity on these and they're fine. Next thing I can see is the dac.
I don't have any other dcs rom/ram chips so I can't eliminate them yet. I just know it's going to be something really simple that I will slap myself when I think of it.
Hi interested in what logic probe you would suggest please as i see there are various sorts available,many thanks in advanceThe 2803A chip? If I told you they started socketing those buggers on later WPC revisions, would you catch my drift?
They easily die when various things get shorted, best one being GI to switch matrix.
That being said - if you're guessing and don't know, don't throw your money away on guessing - get a logic probe along with your multimeter, and do a test of the CPU board in isolation - https://pinballrehab.com/1-articles...-rework-test/231-testing-wpc-cpu-on-the-bench
As you said earlier @T-Dawg with no ribbons connected to audio board do you still get the screeching and no bong, ie its isolated to the audio board for def ?
Hi interested in what logic probe you would suggest please as i see there are various sorts available,many thanks in advance
so no screaming when ribbons disconnected ?Definitely no bong no, just silence then screaming garbage when a game is started or other commands are sent
so no screaming when ribbons disconnected ?
I thinking if no screeching when no ribbon cables connected then it could be coming from CPU board - can you try the audio board in another machine or vice versa cpu board ?I'll double check when I get back to the shop but I'm pretty sure it's going to be a no.
stick it on you tube and post the linkDo you know how I can upload a video? Made a mini discovery
I thinking if no screeching when no ribbon cables connected then it could be coming from CPU board - can you try the audio board in another machine or vice versa cpu board ?
what was the mini discovery then ?Ok so had a little luck Now, sometimes when I turn it on with the ribbon disconnected I get what seems like an attempt at a bong. But it's garbaged and out of tone. Then complete silence. But it dosent do it all the time although I may not be leaving the machine off long enough for the caps to discharge. The rest of the time it's just pops and crackles.
With the ribbon connected if I start a game and put my finger on the top of u20 the sound goes nuts. Loud and screaming although still not noise you would expect. I have reflowed all around the area which had no effect. It could just be interference from the static on my finger.
I don't have any other dcs parts lying around. Only taf and ww. Which are pre dcs![]()