Detent fails, when warm, to hot

[Ron Rich]

Hi  All,

Failure to Detent at selected position after a period of warm up, is usually caused by a failing 56 K ohm, 2 watt resistor. This is applicable to all models from the K/L's thru the LS-2, (if the SCC is a -8  version, and the board inside, is a - 1 version).  Answer is to change that resistor to a 4, or better, watt, unit. Also check the 36 -1/2 W resistor on the same terminal-change it, if not exactly correct ! Next, should that not fix it, do the "battery trick" to determine if a read-out/sense, or write-in problem. 

This can also be caused by a resistor inside the PA, on tube type units-- and of course, leaky caps, and or resistors changing values, on all units.

I have ASSumed that the reader of this post has at least replaced all lytic caps, and also has read the "trouble shooting" post in our FAQ's section.

Ron Rich

[joew]

Any tips if this symptom is found in a USC-2? I looked over the parts manual and realized pretty quick that they probably changed it all together when they switched to the micro-log system. Is there a different type of resistor in the DCC? Or is this going to be caused by a completely different problem?
Thanks, Joe

[Ron Rich]

Hi Joe,
Which DCC (# and Code letter), is installed in your phono -- Does the mechanism have both a clutch & reset switch installed ? Have you determined if you have a Read-out/sense, or Write-in problem ? No-- this symptom is not generally seen in the MicroLog series phono's. Ron Rich

[joew]

Hi Ron,
It has a DCC1 code B in it. I can tell you the board numbers inside if needed. Operation is normal with the battery test, so it has write in problems. Forgive me for asking, but what are the clutch and reset switches on the mechanism? What would they be labeled in the service manual?
Thanks, Joe

[Ron Rich]

Hi Joe,
They are labeled "Clutch & Reset Lever switches ". The "call out numbers" on that model, are 2M-1 & 2M-11. Do you have a copy of my "Seeburg MicroLog Trouble Shooting Guide" ? Ron Rich

[joew]

Ron, Yes I do have a copy of the micro-log guide. Also the mech does have the two switches.
Joe

[Ron Rich]

Hi Joe,
Thank-you for buying the guide-- didja read it ?
Ron Rich

[joew]

Ron, Yes I did read it but couldn't find a symptom that matched the problem I'm having.
Joe

[Ron Rich]

Hi Joe,
How about---" will select the first requested selection--but-- " ? Slightly different wording but ain't that "the same ? Ron Rich

[joew]

Hi Ron, Yes I saw that one but was thinking it meant only one selection could be made until the power could be turned off and back on. The problem I'm having is that it will pick up as many selections as I can physically make in the amount of warmup time after the power is turned on, if multiple selections are made within that time frame it will play every selection. But if any selections are made after that time it wont pick anything up, it just scans twice. I also usually have to wait about 10 minutes with it off before I can get it to select anything again. If I just turn the power switch on/off it will continue to pick up nothing. It doesn't seem like the same problem to me, but I've been known to be wrong.
Joe

[Ron Rich]

Hi Joe,
I think it is the same problem--- follow the guide to see ? What is the "warranty date" on the DRD ? Ron Rich