If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Seeburg SMC Mech Problem
Hi. I need help from some of you seeburg gurus out there. After much
lubing I got the mech motor to start turning in my SMC2 that has been sitting untouched for years. Now, the machines does the classic - "pick up the record, reject it, and pick it up again" routine. The only way that I can get the mech to scan is to manually force the trip lever down. When I hold the trip lever down it willl go into scan mode. The entire time that I manually push down on the trip lever the trip coil is energized and fighting me (I know that's not a good practice). As soon as I let go of the trip lever is goes back into play mode and does the same thing. My question is - does this sound like an electrical problem or just a gunked up clutch? I read a post about the safety plunger - could this be the culprit? Any help would be GREATLY APPRECIATED. Thanks much, Russ |
Ads |
#2
|
|||
|
|||
Seeburg SMC Mech Problem
|
#3
|
|||
|
|||
Seeburg SMC Mech Problem
Russ...drop me an e-mail at: Tell me where you are
located and I may have someone who can help........... |
#5
|
|||
|
|||
Seeburg SMC Mech Problem
wrote: Thanks Tony. I tried that solution and it acted the same way. I tested the triacs and they test okay. I do have new symtoms now after some fiddling around. Now the mech will scan and eventually find it's home and stop. When I give a selction, it starts to scan, but never trips into play position. The only way to get the mech to stop scanning is to clear the memory. I have a feeling that the issue is in the switch stack on the front of the mech. Does this sound probable? Tony Miller wrote: On 1 Dec 2005 07:13:17 -0800, wrote: Hi. I need help from some of you seeburg gurus out there. After much lubing I got the mech motor to start turning in my SMC2 that has been sitting untouched for years. Now, the machines does the classic - "pick up the record, reject it, and pick it up again" routine. The only way that I can get the mech to scan is to manually force the trip lever down. When I hold the trip lever down it willl go into scan mode. The entire time that I manually push down on the trip lever the trip coil is energized and fighting me (I know that's not a good practice). As soon as I let go of the trip lever is goes back into play mode and does the same thing. My question is - does this sound like an electrical problem or just a gunked up clutch? I read a post about the safety plunger - could this be the culprit? Any help would be GREATLY APPRECIATED. Thanks much, Russ Unplug the amplifier 6-pin mute plug. If the problem goes away, it's a misadjusted reed switch on the pickup arm frame or a problem in the amp (mute/trip relay). If the problem remains, it's probably the trip solenoid triac on the PCC Interface board. CAUTION! The PCC Interface board has line voltage present. Cheers, Tony Miller |
#6
|
|||
|
|||
Seeburg SMC Mech Problem
oops. Anyway, here is more of a general question for Tony or the group
in general. When a seeburg of this vintage (SMC2) has an issue where the computer seems to be working, but yet the selector does not make the selection, is this generally an issue with the CPU or the Phono Control Center? I'm not sure how this circuit works. When I make a selection it starts scanning but never finds the record. I found the Traic on the Phono Control Center interface board that controls the trip coil. I grounded one of the legs and it tripped the coil and the selector made the selction and worked okay. So, given that, what is your best guess? I'm wondering if I should track down a Phono Control Center. Thanks, Russ wrote: Thanks Tony. I tried that solution and it acted the same way. I tested the triacs and they test okay. I do have new symtoms now after some fiddling around. Now the mech will scan and eventually find it's home and stop. When I give a selction, it starts to scan, but never trips into play position. The only way to get the mech to stop scanning is to clear the memory. I have a feeling that the issue is in the switch stack on the front of the mech. Does this sound probable? Tony Miller wrote: On 1 Dec 2005 07:13:17 -0800, wrote: Hi. I need help from some of you seeburg gurus out there. After much lubing I got the mech motor to start turning in my SMC2 that has been sitting untouched for years. Now, the machines does the classic - "pick up the record, reject it, and pick it up again" routine. The only way that I can get the mech to scan is to manually force the trip lever down. When I hold the trip lever down it willl go into scan mode. The entire time that I manually push down on the trip lever the trip coil is energized and fighting me (I know that's not a good practice). As soon as I let go of the trip lever is goes back into play mode and does the same thing. My question is - does this sound like an electrical problem or just a gunked up clutch? I read a post about the safety plunger - could this be the culprit? Any help would be GREATLY APPRECIATED. Thanks much, Russ Unplug the amplifier 6-pin mute plug. If the problem goes away, it's a misadjusted reed switch on the pickup arm frame or a problem in the amp (mute/trip relay). If the problem remains, it's probably the trip solenoid triac on the PCC Interface board. CAUTION! The PCC Interface board has line voltage present. Cheers, Tony Miller |
#7
|
|||
|
|||
Seeburg SMC Mech Problem
On 3 Dec 2005 15:48:40 -0800, wrote:
oops. Anyway, here is more of a general question for Tony or the group in general. When a seeburg of this vintage (SMC2) has an issue where the computer seems to be working, but yet the selector does not make the selection, is this generally an issue with the CPU or the Phono Control Center? I'm not sure how this circuit works. When I make a selection it starts scanning but never finds the record. I found the Traic on the Phono Control Center interface board that controls the trip coil. I grounded one of the legs and it tripped the coil and the selector made the selction and worked okay. So, given that, what is your best guess? I'm wondering if I should track down a Phono Control Center. Thanks, Russ Hard to say. Without more information it could be either one. Take a jumper and connect one end to +12 VDC on the PCC Interface board (tab of VR1) and connect the other and touch it to either pin 6 or 8 of U8 on the PCC Interface board. If it trips, it's probably the MCU board at fault, otherwise it's the PCC Interface board. Cheers, Tony Miller wrote: Thanks Tony. I tried that solution and it acted the same way. I tested the triacs and they test okay. I do have new symtoms now after some fiddling around. Now the mech will scan and eventually find it's home and stop. When I give a selction, it starts to scan, but never trips into play position. The only way to get the mech to stop scanning is to clear the memory. I have a feeling that the issue is in the switch stack on the front of the mech. Does this sound probable? Tony Miller wrote: On 1 Dec 2005 07:13:17 -0800, wrote: Hi. I need help from some of you seeburg gurus out there. After much lubing I got the mech motor to start turning in my SMC2 that has been sitting untouched for years. Now, the machines does the classic - "pick up the record, reject it, and pick it up again" routine. The only way that I can get the mech to scan is to manually force the trip lever down. When I hold the trip lever down it willl go into scan mode. The entire time that I manually push down on the trip lever the trip coil is energized and fighting me (I know that's not a good practice). As soon as I let go of the trip lever is goes back into play mode and does the same thing. My question is - does this sound like an electrical problem or just a gunked up clutch? I read a post about the safety plunger - could this be the culprit? Any help would be GREATLY APPRECIATED. Thanks much, Russ Unplug the amplifier 6-pin mute plug. If the problem goes away, it's a misadjusted reed switch on the pickup arm frame or a problem in the amp (mute/trip relay). If the problem remains, it's probably the trip solenoid triac on the PCC Interface board. CAUTION! The PCC Interface board has line voltage present. Cheers, Tony Miller |
#8
|
|||
|
|||
Seeburg SMC Mech Problem
Okay. I tried what you said and it appears to be a problem with the
MCU. I did the above operation and it did trip the mech. So, I guess a have an issue somewhere on the MCU. At this point this is getting deep for me. I think it may be time to send the board out to someone with a test fixture. I'm thinking of Using C&C Electronic Restoration out of Columbus Ohio. Anyway, thanks so much for the help. Russ |
#9
|
|||
|
|||
Seeburg SMC Mech Problem
By the way, has anyone had any expereince with C&C Eelctronic
Restorations? They seem like nice folks, but I'd like to double check before sending my items. Thanks again, Russ |
#10
|
|||
|
|||
Seeburg SMC Mech Problem
Thanks, but no need. i have already sent the boards out.
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Seeburg G consistant problem | Ken G. | Juke Boxes | 2 | June 16th 05 04:40 AM |
Seeburg 100B selector problem | Terry Legere & Linda Allen | Juke Boxes | 3 | April 1st 04 01:36 AM |
TECH: AMI Continental 1 mech problem | mike | Juke Boxes | 0 | December 31st 03 07:33 PM |
Looking for Seeburg R Mech Cover | CraigBurnett | Juke Boxes | 0 | December 17th 03 04:51 AM |
TECH: Seeburg M100A Motor problem | Nick Guerra | Juke Boxes | 2 | July 5th 03 07:19 AM |