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Post by sh0rtlife on Jun 2, 2024 6:51:38 GMT
found a 3700 on the way to pickup a car, wife told me to bring it back with me, so i did, its a pretty clean unit, but as you would expect isnt functional but hey less than 200$ i cant go wrong and honestly even if i never get it working its a beautiful piece of history
with that said ive cleaned it up, ive un-frozen and properly lubed most everything...still need to figure out how to clean and lube the selection switches as some of them stick, as well as the carousel selection plates, ive even gone thru and replaced the triacs
ive got a manual i downloaded and its not great but seems to cover most everything, tho..the one thing i seem to be missing is the (order of operation)
ive gone thru and manualy tested everything i can think of, it will play a record and put it back, tho i need to make some adjustments...however it WILL NOT pick a selection and put it on the turn table
i have tryed to do the free play with no luck, ive bypassed the boac with the freeplay jumpers with no luck, however in doing so i DID manage to get the selection and credit lights to light so i do know that the power is there to atleast get those lit...via jumpers
ive spent the past month trolling thru various dead forums trying to find info..and stumbled across this place tonight...so hoping to get some help....i used to help mom work on alot of old tube radios and tvs back in the early 80s so im not entirely a stranger to this kind of stuff..im simply stumped as i have no referance point
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Post by sh0rtlife on Jun 3, 2024 0:30:58 GMT
FWIW
i have pulled the caps off every relay to test function and operation, triggering most of them does exactly what they should
manualy spinning the motor for the arm to grab a record and place it on the turntable causes everything it should to function as it should right up to the point of it returning the record
where i believe i am stuck is im not getting a "credit" as in with everything pluged in as it should be tripping the coin switches does nothing, put in freeplay via jumpingin 2 6,7,8? does nothing as in i never get selection switch solenoid to activate
so where should i be looking...i feel like this should be a pretty simple fix
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Post by jukenorman on Jun 3, 2024 15:24:50 GMT
In your first post, you said jumpering the BOAC brought up the credit light and that would suggest that setting free play was successful. There is additional circuitry associated with the latch solenoid that you probably need to check through using the schematic - something will likely be open circuit that shouldn't be.
Norman.
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Post by sh0rtlife on Jun 3, 2024 20:57:28 GMT
In your first post, you said jumpering the BOAC brought up the credit light and that would suggest that setting free play was successful. There is additional circuitry associated with the latch solenoid that you probably need to check through using the schematic - something will likely be open circuit that shouldn't be. Norman. i have to confess that when trying it again i have not been able to get the credit light to light up unless i jump another pin outside of the 2,6,7,8 as theres a specific pin that causes the credit light to light, however it does verify that power is at the credit side of things
ive dug thre the schematics a few times, and im no stranger to reading them as ive litteraly repaired and re-wired cars from the 40ś up bikes as well..so im well versed in what im reading..useualy
is there a relay that trips the selection soliniod as i didnt notice one in them..bonus my machine actualy had its originals in the cabinet so i dont have to rely on the crappy digitals i got
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Post by jukenorman on Jun 4, 2024 8:17:27 GMT
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Post by sh0rtlife on Jun 9, 2024 5:56:00 GMT
well its a lead if nothing else...
so ive taken out the key select board and switch assy only to find quite a few of the contacts rose colored as well as black and such...even white smoke/spark marks on the pcb that the switch slides are rivited to basicly looks like the entire selection swithc assy took ALOT of volts and things got hot...turning those kind of contacts rose color is no easy task
right now ive got the full assy out and gone so far as to bend back the retaining tabs of the swithc board so i can clean and adjust every last switch slide
will update once done with that
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Post by sh0rtlife on Jul 10, 2024 21:25:23 GMT
well ive made "some" progress, but still havnt solved it i picked up a keyboard from a 3400 to use as parts, got it cheep so i dont feel bad drilled out about 40 rivets on the 3700 and another 40 on the 3400 and removed the slide switch contacts and transfered them over to the 3700 board, flat out swapped the 1-0 board so now ive tested out and verifyed the keyboard as functional, which in turn has now made it so the selection lock relay when pressed works, but....i still cant seem to genuinely force a credit in any way shape or form..so im looking for a solve on this one the other noteable issue ive spotted is that when you put it in load mode and then put it to run it spins everything as it should selection a-v all light up as it rolls around like you would expect...but 1-0 well it just flashes #6..so i suspect somethings fowled up im not sure if the 2 are related or not, but looking for some insight
on a side note, the amount i need to spin the selection arm motor now is VERY little as before id have to spin it for a good min or 2 before it would take over, now its just a couple of rotations, so i know im closer
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Post by sh0rtlife on Jul 11, 2024 0:06:22 GMT
in the proccess of chasing wires and checking voltages, i made note that the typical jump is 2, 6, 7, 8 however on the control unit 7/8 dont exist, jumping 9 triggers the insert more coins, jumping 6 does NOTHING, so i suspect theres an issue between the #6 wire and the relay but the wire runs thru another board in the control box...so im kinda lost at this point
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Post by jukenorman on Jul 11, 2024 15:26:02 GMT
As I previously said, I have little experience of these apart from minor repairs to the odd 1050! There is a "sequence of operations" section in the 3500 manual which might help you out a bit although a major drawback is that the 3500 doesn't have the BOAC unit. But the basic principle of operation should be the same. I have a (not great) pdf of the 3500 manual to which you are welcome. On another note, after you get it functional, there are details of an amplifier upgrade on flippers.com.
Norman.
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Post by sh0rtlife on Jul 11, 2024 18:34:53 GMT
As I previously said, I have little experience of these apart from minor repairs to the odd 1050! There is a "sequence of operations" section in the 3500 manual which might help you out a bit although a major drawback is that the 3500 doesn't have the BOAC unit. But the basic principle of operation should be the same. I have a (not great) pdf of the 3500 manual to which you are welcome. On another note, after you get it functional, there are details of an amplifier upgrade on flippers.com. Norman. id love to get a copy of that order of op
with as dead as this place is..do you know of anywhere i might get some answers?
my next plan is to re-cap it and see what happens
as far as the amp goes i have the upgrade bookmarked, but from my tests im not convinced it needs it or hasnt been re-worked allready as it actualy sounds amazing
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Post by jukeboxmarty on Jul 11, 2024 18:39:27 GMT
with as dead as this place is..do you know of anywhere i might get some answers? I'm sorry, we are all on a limited pay-scale. Maybe we should close off the forum to new members? ...or close it entirely? |
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Post by jukenorman on Jul 11, 2024 19:37:12 GMT
There are some Facebook groups where you will get answers - I couldn't vouch for them being good answers though, that very much depends on who provides them! I had already sent you a link to the 3500 manual, check the messages header at the top of the page.
Over the years I have saved copies of jukebox forum messages that look that they might contain useful information for future reference - how about this 3800 BOAC post: "I've cracked it! I am not sure what the theory is as I don't have the diagrams to match but you ground the output from the collector of TR4 (pin 10) going to the keyboard by connecting it to the bottom of R28 (pin 6) and that gives permanent freeplay"! Does that help at all?
Norman.
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Post by sh0rtlife on Jul 13, 2024 2:38:21 GMT
There are some Facebook groups where you will get answers - I couldn't vouch for them being good answers though, that very much depends on who provides them! I had already sent you a link to the 3500 manual, check the messages header at the top of the page. Over the years I have saved copies of jukebox forum messages that look that they might contain useful information for future reference - how about this 3800 BOAC post: "I've cracked it! I am not sure what the theory is as I don't have the diagrams to match but you ground the output from the collector of TR4 (pin 10) going to the keyboard by connecting it to the bottom of R28 (pin 6) and that gives permanent freeplay"! Does that help at all? Norman. that sounds usefull, best i can tell the changes from the 3700 to 3800 are mostly cosmetic, but if thats a link it didnt work, in my ebay hunts theres a guy down in cali ive ordered a few bits from allready, he has a 3600 control box but its DRASTICLY different(i "think" the 3 big relays were replaced with an internal board for the 3700), the 3800 box that was allready sold looked to be identical to the 3700
im sooooo not a fan of facebook...forums things dont get lost
mechanicaly speaking it looks like most of the 3000 series boxes share a good bit, its the control box and amp that realy seemed to change
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Post by sh0rtlife on Jul 13, 2024 2:40:13 GMT
with as dead as this place is..do you know of anywhere i might get some answers? I'm sorry, we are all on a limited pay-scale. Maybe we should close off the forum to new members? ...or close it entirely? i didnt mean anything by it, just wish there was more warm bodys with good info around, its a shame that forums have dryed up for most things....im oldschool and prefer to have pictures and forums..not a wall of text yammering and vid clips ..also wondered if ppl migrated elsewhere as ive seen it happen with many good car forums |
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Post by jukenorman on Jul 13, 2024 10:06:01 GMT
The link to the 3500 manual was sent in a private message - look at the "Messages" header at the top of the forum and you will find it. As far as I am aware, the BOAC units are the same so the instruction regarding permanent credit should equally apply to your 3700.
I may be over simplifying but I believe that once you get the freeplay sorted, you should be able to use the 3500 sequence of operations to guide you through any other issues you might have.
Norman.
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