Rowe ami R88 ccc problems

talon93pete

New member
Joined
Jan 22, 2010
Messages
83
Reaction score
0
Location
superior, Wisconsin
Hi,
Took an R88 home from work a while ago, played great till we got back from vacation a couple months later. Just enough time for the wife to fall in love with it.
Any way playing some tunes that fateful day she comes running up, Pete the juke is making funny noise.
Perfect.
So the basket is turning when I get there, non stop. I power down and up. The basket turns one record position, pulls a record, moves the tone arm, removes the tone arm, and returns the record. Again and again. Never plays a note.
All the led's, except the cancel, on the turntable control are on.
In service I can't get the numerical display to light on the ccc.

I grabbed a ccc out of another r88 at work and swapped it in, problem solved.

But I can't figure out what is wrong with the ccc. I probed all the chips and transistors and diodes with my meter. They all read with in a couple ohms of the good board.

Anyone have a schematic of the ccc they would be willing to share or some hints what may be wrong.
 
Just because it's simple to do, have you tried a reset to factory settings of the problem ccc? That is, hold down both buttons on the ccc while you turn the power off and back on? Sometimes that's all it takes.
 
Tried the factory reset, Alas no go.
I'm sort of thinking the processor at this point since the symptoms are in such different sections of the board.
 
Then unless there is a bad solder joint on one of the connector pins or elsewhere on the board, that is about the extent of my expertise on cccs. And re the factory reset being in the manual, I don't think it is. Like so many helpful shortcuts in this business, manufacturers seem to prefer letting us find out either through experience or the hard way.
 
Yep,
Well I got another ccc out of a juke that either started or lived (mostly) through a fire.
It was an Easy fix.
Still having a nf ccc is bugging me. At least I have a functioning juke, and the extra good ccc to shoot against.
I'm starting to lean toward the processor. Will let every one know if I come up with something.
 
"The basket turns one record position, pulls a record, moves the tone arm, removes the tone arm, and returns the record. Again and again."

That's the usual condition when the "Computer Chip" stops running.

I would check the 5-volt power, RESET pin voltage and if you have a scope, check the
crystal oscillator and also for any signal activity on the computer chip pins.

For voltage measurements and circuit diagrams, you can go to my web page
http://www.cdadapter.com/repair.htm

Scroll down to the bottom until TROUBLESHOOTER TOOL FOR ROWE CCC BOARD REPAIR.
Download the Troubleshooter Manual

If the computer chip is bad, we have a CONTROLLER IC DIRECT PLUG-IN REPLACEMENT
 
Thanks much.
The prints will help a bit.
I had found your site for the r84 chip set when I get to that point I'll pony up.
 
A bit old now,
But I finally got the ccc working.

It was the programed chip.
Replaced it with the daughter board above and perfect functionality has been restored.
 
Depends on what the boss wants to do with Burnie.

Burnie went through a fire, but with the flashie lights I think that if it runs we could sell it fairly quickly.

I actually ended up fixing 3 ccc boards in total.
 
Back
Top Bottom