Help with 2600 - Please......SOLVED

[restorationnut]

Gone through almost all adjustments, but this problem has me stumped.

It has to do with record selection/movement of the selector crank. All selections for A, B, C, F, G, J, L, and V work, and will play a record just fine. But the remaing selections don't. For example: when I select N4, I can see the 4 solenoid depressing, and the number quadrant moves to the stop. But then, everthing shuts off. The turntable never starts. Logically, it would have to do with whatever all the rest of the selections have in common.



It would appear that the letter solenoids for D, E, H, K, M, N, P, Q, R, S, T, and U do not energize. When I manually release any pin, it works fine.



Anyone have any ideas?



Thanks

[Ron Rich]

Yep--I gotz ideas--

Oh, you wanted to read my idea(s) ? Guess I had better rit em down some-wheres-- ?

Check the keyboard--especially the letter C --I suspect it's either not returning all the way, or if it is, it's not making good contact --- Ladder is open --
Ron Rich

[restorationnut]

Thanks Ron. I'll take a look in the morning. What do you mean be "ladder is open"?

[Ron Rich]

Do you have the Service Manual ? Look at it, the keyboard, on EVERY jukebox, is arraigned, for "anti-cheat" purposes, in the form of a ladder. Power must pass through each switch to the next, or the "ladder" is broken. Ron Rich

[restorationnut]

But then why would 8 of them work perfectly, and 12 won't? Seems like none of them would work if the ladder was broken.

Pat

[restorationnut]

Check ALL of the switches. Every one is working properly. Next?

Pat

[Ron Rich]

Hi Pat,
Do you have the manual--look for something "common" to those switches-- If it was working before you "worked on it", I suspect that you have plugs reversed somewhere--are all of the index (alignment) keys good ? Ron Rich

[restorationnut]

I do have the manual. And no, it never has worked. It had several problems when I got it, and I've solved all of them except this issue. I also can't seem to find anything common. For instance, A, B, C, and F work fine, but D and E don't. I can manually trip all the pins, and they work fine. I know all the number solenoids work, and I doubt very much that 12 letter solenoids are all bad. As you say, there has to be something in common with the non working switches, I just can't find it.

Pat

[Ron Rich]

Pat,
Of course it's gonna work if you manually release a pin-- that starts the "read-out" process--your problem is in the "Write-in" section. Did you check ALL index pins ?? Are the four plugs from the keyboard to the ES numbered still ? If not, could you (or someone) crossed them ?? Ron Rich

[restorationnut]

The plugs are still numbered. And assuming that the hand-written numbers on the plate are correct, they are in the correct socket. But the terminology in the manual may be slightly different that what you say. By "index" pins, do you mean "latch" pins?

[Ron Rich]

Pat,
I have no idea what "latch pins" are ?? I am speaking of the pins in the center of the Amphonel (sp?), brand, round Bakelite plugs, used here, that "align" the plug to the socket. These are (way too often), broken off, which allows the pug to enter the sockets incorrectly. Ron Rich

[restorationnut]

Wurlitzer refers to all the EC pins as latch pins. I just rechecked all the plugs, and all the index pins are intact, therefore they are all installed correctly. Went over the schematic again, and I can still find no common denominator for the non-working, nor the working keyswitches.

[Ron Rich]

Pat,
Did you check EVERY, one used on that phono ? I dono what a "EC pin" is, as my WurliTzer ease is poor !! ?? Grasping at (now outlawed) straws -- Ron Rich

[restorationnut]

My error. I meant ES. How can kids in school shoot spitwads without straws? And yes, I checked EVERY plug.

[restorationnut]

I just pulled the electric Selector back out, and applied 12VDC to all number and letter solenoids. All solenoids energized. The number ones all the way, and the letter ones part of the way, but that's probably because they should have 28VDC.