Simple Repair Of The Mech Logic PCB In A Beautiful 1982 Rockola 488 Jukebox - Diagnosis, Fix
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- เผยแพร่เมื่อ 8 ก.พ. 2025
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Joes classics channel is 5 stars ⭐️ ⭐️ ⭐️ ⭐️ ⭐️ This is my go to channel! Thank you both for keeping the vintage hobby alive and fun for us all. I enjoyed watching this repair !
Thank you Jumpingeneral! See you on the next video (tomorrow!)
Ron, your multimeter isn’t dirty, it’s well-loved!
People are weird Man :)
if it wasn't dirty I wouldn't trust you to fix my stuff
20:40 You're gonna LOVE that gadget. I call mine Dr. Mu, mystic identifier of unknown values. It'll tell you what caps' values are, resistance values, if a transistor's any good, its orientation by way of NPN or PNP, its beta, and I think it'll even test inductors.
Those multi function testers are incredibly handy. They do indeed test inductors, and some meters do MOSFETs and SCRs (not sure on that model). For the 20 or so dollars most of them cost, it's a very very good investment.
i never thought I'd want a jukebox ... until now. haha. Love it and nice work walking through the schematics logically.
OH wow. That is one beautiful jukebox!!!! Glad this beauty was fixed by my favorite fixer-upper!!!! Great job as always!!!
I'm still honing my solid state skills.... so this kind of stuff helps me out. Thanks brother!
Anyone telling you explanations are nonsense is just jealous that you have the knowledge to repair these. Someone is suffering butt hurt because you are better :).
Seriously though, I am an engineer, and your explanations often make great sense. You follow things logically, and the results speak for themselves. You get things fixed. That component tester should automatically detect what you plug into it and then test it. Some will do caps, but mostly for diodes and transistors. 123 is the three transistor leads ( so you put the in 1, 2 3) and K and A represent Cathode and Anode of a Diode usually. Should auto detect though on most items
To explain pole and throw of switches, it's fairly easy to identify. Poles describe the amount of switching assemblies and throw describes the amount of contacts from one end of the limit to the other. So, reading that schematic, you have 3 switches in an assembly with 3 different positions available on at least one of the switches (manual/off/automatic). Therefore you have a triple pole, triple throw switch.
I really have to thank you for all the videos you guys put out on the pinball machines you fix. I have just been asked to restore an ol Bally Champ EM from '74. Although I am an electronics tech for industrial stamping press controls I have never worked on a pinball machine. The videos you did on the Circus machine has helped me immensely. The only issue I have is getting parts here in Canada. This one needs a lot of TLC as it apparently was overseas since the coin door has a 2 Franc label on the coin door. Again thanks and keep up the good work. I am using your Amazon link to try to help keep the videos rolling.
Thank you Russell! I'll bet you already know but that Bally Champ was the pinball Elvis had in Graceland (It's still there!)
@@LyonsArcade actually I I did not know but thanks for that tidbit.
I appreciate you doing the videos Ron & Joe air Reminds me of When I worked for Cortlandt Amusements in NY IN THE Late 70s.. Keep up the Great Work .
Big props to Neil. He's the man!! That gadget will help you immensely.
That was a fun change of pace video. Keep up the good content.
It's great running through the diagnostic process like you do. I've learned a lot on this video again. Thanks.
I've recently made my nsm up and running again. And i used the titele card creator that you've suggested in another video. It looks fantastic 👍
What you think Joe? It broke. I laugh every time. These videos are so great because you seem like your having fun.
I had a similar issue (to that bent IC pin) once with my Atari ST computer. It was incredible, I had owned it for years and it had worked perfectly, then one day it just wouldn't start up. I dismantled it and was amazed to find that a single pin of one of the IC's had straightened itself out (and was therefore not in the socket)! I was disbelieving, it couldn't have always been that way (as it worked great for years), but it looked like the pin had never been bent at all and was perfectly straight! My "guess" (comming much later when I heard about the invention of "memory metal") was wondering if maybe the IC manufactur process had accidently triggered the metal to want to restore its factory shape over time (it was either that or by some miracle it worked for years without one of its chips lol).
I have an older model of that tester and it's great! Very accurately measures/tests caps, transistors and diodes. I use it to match transistor pairs when replacing the weird dual transistor in Rockola amps. My 480 you helped me with awhile back ... problem was on that board but a bad CPU! Was lucky I snagged a good used one.
also does resistors scr inductors and gates and fets. there are only 3 inputs but any input with the same number is connected together, this allows spacing to put most components into the tester. good for doing a cap kit. you can test what you removed for your own information but you can also test the component going in to replace it
@@robertlipsett2535 yes! It's a very effective device and cheap too
Great Video Ronnie, Love the lights on the jukebox looks great. Joe is working late. I hope those new tools make your jobs easier. See you on the next video Ronnie.
Poles are the different sets/stacks of switches. And the "throw" is the number of connections each switch makes.
I think poles were named that based on some of the usage cases. Like if you have a large motor relay, you'd need to kill at least 2 sets of connections when dealing with 220/240 volts (with a floating neutral wire) or 3-phase stuff, so multiple different circuits.
And throw is easy to remember since that is the number of ways the switch gets thrown. So a DPDT relay has 2 switch stacks (DP) and makes connections both ways (DT).
Gorgeous machine! Sounds better than I expected.
That's a great machine there I tell ye whut...Dang it Dale!!! 😆
I wish i had half your smarts. Thanks for the hard work.
Hi! Thanks for your clear and easy to understand explanations. You take all the time that is needed and it's useful. Your brother is even better at summarizing the whole situation : it's broke. Congrats to both of you!
Thanks you doing a great job
That unit will also do zeners!
Eyyyyy!
Youse didn't call The Fonz! He coulda tapped out at least 20 of these juke boxes in the time it took you to fix one!
Eyyyyyy!
Well, it's nice to see people still appreciate a classic jukebox.
The digital stuff is so cold. I miss aisles of records and even CDs.
People still collect this old stuff.
The music industry shot itself with crappy new releases and overpriced albums. Once in a while, I might get an album CD on sale -- unfortunately, it's at discounters because aside from Barnes&Noble and a very few indie record stores, they've stopped selling much beyond vinyl.
The only thing to watch for on those component testers is to make sure you discharge capacitors before testing. I learnt that one the hard way.
Great video
Thanks for watching Nathan!
Tester can do any 2 or 3 leg component (resistor, capacitor, diode, transistor, etc)
We found elevator music! Let's see em cancel that. (Best line I've heard in a while. And so true)
Don't edit out Joe, he makes me laugh every time It's Broke lmao
Keep your hands and especially your legs inside the vehicle at all times... thank you people.
I love me all of them OIMFs on the schematic
have a 477/481 rockola in side the amp 52280-A looking for rhe male and female connectors on the pc boards thank you any help thank you from john
Stranger in Paradise from Kismet - actually Polovtsian Dance by Borodin
I have that Jukebox! Well, the Sunrise Blue verson.
I thought this one was the sunrise blue one!
@@LyonsArcade no, that's the original 488. The Sunrise Blue was the second 488, and the Sunset Gold was the red one. I'd post a picture of mine, but TH-cam won't let us do that anymore either.
But, speaking of my 488, thank you for helping my fix it. I wouldn't have a running Jukebox without your videos.
I figured it was a transistor tester since there were 3 leads.
Good job on the song pick.... Google didn't know it at all!!! Lol not a good song but you could use it to show a working jukebox on TH-cam.
In another words it ain't no Tom Petty or John Cougar
AMI ROWE is what I have always seen here in the northeast.
I know that song ….Isn’t it called “Strange Sort of Parasite”?
Are you allowed to play songs once they’re 50 years old? …. or is that just a myth?
Nice, relatively simple fix on this great jukebox.
I think it's 50 years after the composer dies, you can record their song for free.. if it's a recording that say Sony paid for though, I don't think they're ever going to lose the rights to it. So basically we'll never be able to play what we want for free.
12:57 Multimeter cleaning is long overdue.....
Somebody has OCD....
Food for Thought 🤔.....
Next time at Walmart PU Large Spray Bottle of Windex (PS No Generics Allowed) Best Restoration Tool to Have on Hand.... Great for Cleaning Play Fields and Fluc 👍 👏 Meters.....
PS you can even stop in Sporting Goods, and the Freezer Dept. PU Chinese and a Pint of Ice Cream 🍦 🍨 PS Keap up the Great Work 👍 .....
Two things I know from your multimeter: 1: It's a Fluke, so you are a professional. 2: It's filthy, so you are experienced! Never trust someone with brand new tools to work on your vintage equipment!
“It’s BROKE!” ~Joe 😁 ☠️
👀
I see this kind of work all the time. WHY?? You know the person knew this was wrong. It's impossible to not see that when it happened. If you are not even going to try, don't bother. UGGHHH I am getting all emotional typing this. I have spent hours trying to figure things out and find something stupid like this. I work on industrial packaging machines. Hundreds of totally unqualified people working on multi-million dollar machines. It's horror show level terror at times.
Nice, a pin, now I can go get tacos
Yodelayheehoo
Hello Lil Everette, did you have a good New Years?
@@LyonsArcade good
@@LyonsArcade yes
I sell propane and propane accessories
{ IT'S BROKE }
It's broken
ASCAP lol
When 🤔 Joe Goes For Lunch, Once a Week He Stops ✋ for Chinese....
Just Guessing HE HE
Sleepy Joe?
No judgment but I feel like a single clorox wipe would get that meter looking new again
Are you a maid?
@@LyonsArcadenope, but if I worked with you that dirt would mysteriously dissappear
Music stolen from Polovetsian fire dances by Borodin
I only know that because in 1986 I asked a classical music fan what CD I should buy to start my classical CD collection, and voila
TH-cam stole my reply again.
I don't think it likes links
IT'S BROKE.
Throw some dub step in there...