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Turntable Help
John Nightingale:
If this is a belt drive turntable then the first place I would look is the belt. If stretched or worn it could ride up or down on the motor pulley and cause the symptoms you described. Obviously there are other faults having to do with the motor and the motor drive circuitry but the belt is the first and easiest thing you should investigate and/or replace with a new one. -- Best Regards, Daniel Sofie Electronics Supply & Repair ------------------- "Josh Nightingale" wrote in message om... Hi, I am using an Aiwa PXE860 turntable currently. Recently, I was playing a 33 rpm LP and all of the sudden, the speed went up considerably for no reason. It sounded something like the LP being played at 45 rpms. I stopped playing the record, set the needle down and then tried playing it again. Now, the record would not spin at all. Later, I found that I could manually give the record a nudge in the right direction and the platter would spin. However, the speed is either too fast from the start of playing or it plays approximately half of the LP before randomly speeding up. Could anyone help me diagnose this problem? Is there a part I need to replace or should I look into a new turntable? Thank you, Josh Nightingale |
Turntable Help
Really need brand and model info.
Mark Z. -- Please reply only to Group. I regret this is necessary. Viruses and spam have rendered my regular e-mail address useless. "Josh Nightingale" wrote in message om... Hi, I am using an Aiwa PXE860 turntable currently. Recently, I was playing a 33 rpm LP and all of the sudden, the speed went up considerably for no reason. It sounded something like the LP being played at 45 rpms. I stopped playing the record, set the needle down and then tried playing it again. Now, the record would not spin at all. Later, I found that I could manually give the record a nudge in the right direction and the platter would spin. However, the speed is either too fast from the start of playing or it plays approximately half of the LP before randomly speeding up. Could anyone help me diagnose this problem? Is there a part I need to replace or should I look into a new turntable? Thank you, Josh Nightingale |
Turntable Help
Sofie schrieb: John Nightingale: If this is a belt drive turntable then the first place I would look is the belt. If stretched or worn it could ride up or down on the motor pulley That won't explain why the turntable runs faster. In case of a stretched or worn belt the speed would decrease when the belt slips. I often found noisy speed pots (possiply reference trims inside) causing this effect. - Udo |
Turntable Help
"Udo Piechottka" wrote in message ... Sofie schrieb: John Nightingale: If this is a belt drive turntable then the first place I would look is the belt. If stretched or worn it could ride up or down on the motor pulley That won't explain why the turntable runs faster. In case of a stretched or worn belt the speed would decrease when the belt slips. I often found noisy speed pots (possiply reference trims inside) causing this effect. Of course it would explain it. A belt that is stretched can ride onto the larger part of the spindle causing this effect. If adjustments were the solution, he would not have experienced such dramatic changes in speed. I am not familiar with the model, but if it is belt driven it likely needs a belt and the spindle cleaned. If it is direct drive, there is likely a defect that needs repair. Leonard |
Turntable Help
On Mon, 08 Mar 2004 05:17:10 -0600, Mark D. Zacharias wrote:
Really need brand and model info. It's in the first paragraph, an Aiwa PXE860. Which is AFAIK a direct-drive turntable, no-belts. Suggest the OP checks around the motor controller. "Josh Nightingale" wrote in message om... Hi, I am using an Aiwa PXE860 turntable currently. Recently, I was playing a 33 rpm LP and all of the sudden, the speed went up considerably for no reason. It sounded something like the LP being played at 45 rpms. I stopped playing the record, set the needle down and then tried playing it again. Now, the record would not spin at all. Later, I found that I could manually give the record a nudge in the right direction and the platter would spin. However, the speed is either too fast from the start of playing or it plays approximately half of the LP before randomly speeding up. Could anyone help me diagnose this problem? Is there a part I need to replace or should I look into a new turntable? Thank you, Josh Nightingale -- Michael Turner Email (ROT13) |
Turntable Help
Leonard Caillouet:
You are EXACTLY CORRECT with your reply to Udo Piechottka...... thanks for verifying what we both already knew. I have seen many worn belts that ride up or down on the motor pulley and end up riding on the LARGER DIAMETER edge, thus producing a much faster platter speed.... that is why I made the belt the FIRST and most simple culprit to check. -- Best Regards, Daniel Sofie Electronics Supply & Repair -------------------------- "Leonard Caillouet" wrote in message news:V2_2c.11714$fD2.4445@lakeread02... "Udo Piechottka" wrote in message ... Sofie schrieb: John Nightingale: If this is a belt drive turntable then the first place I would look is the belt. If stretched or worn it could ride up or down on the motor pulley That won't explain why the turntable runs faster. In case of a stretched or worn belt the speed would decrease when the belt slips. I often found noisy speed pots (possiply reference trims inside) causing this effect. Of course it would explain it. A belt that is stretched can ride onto the larger part of the spindle causing this effect. If adjustments were the solution, he would not have experienced such dramatic changes in speed. I am not familiar with the model, but if it is belt driven it likely needs a belt and the spindle cleaned. If it is direct drive, there is likely a defect that needs repair. Leonard |
Turntable Help
Michael Turner:
Thanks for the info, I could not find this model in my "book".... ..... if it is indeed a direct drive unit then the motor controller, as you suggested, is certainly the area to look....... bad solder joints? faulty connections to the platter speed feedback sensor? faulty pitch controls? failing electrolytics? faulty lubrication of the platter? etc? -- Best Regards, Daniel Sofie Electronics Supply & Repair ---------------------------- "michael turner" wrote in message ... On Mon, 08 Mar 2004 05:17:10 -0600, Mark D. Zacharias wrote: Really need brand and model info. It's in the first paragraph, an Aiwa PXE860. Which is AFAIK a direct-drive turntable, no-belts. Suggest the OP checks around the motor controller. "Josh Nightingale" wrote in message om... Hi, I am using an Aiwa PXE860 turntable currently. Recently, I was playing a 33 rpm LP and all of the sudden, the speed went up considerably for no reason. It sounded something like the LP being played at 45 rpms. I stopped playing the record, set the needle down and then tried playing it again. Now, the record would not spin at all. Later, I found that I could manually give the record a nudge in the right direction and the platter would spin. However, the speed is either too fast from the start of playing or it plays approximately half of the LP before randomly speeding up. Could anyone help me diagnose this problem? Is there a part I need to replace or should I look into a new turntable? Thank you, Josh Nightingale -- Michael Turner Email (ROT13) |
Turntable Help
It's an Aiwa PXE860 belt driven turntable. Let me know what other
details would be helpful. Someone elsewhere suggested to me that when turntable belts need replacing, it is usually because they are worn and slipping (or torn) and that the speed would slow down, rather than speed up. Any thoughts on this? Thanks Josh Nightingale "Mark D. Zacharias" wrote in message ... Really need brand and model info. Mark Z. -- Please reply only to Group. I regret this is necessary. Viruses and spam have rendered my regular e-mail address useless. "Josh Nightingale" wrote in message om... Hi, I am using an Aiwa PXE860 turntable currently. Recently, I was playing a 33 rpm LP and all of the sudden, the speed went up considerably for no reason. It sounded something like the LP being played at 45 rpms. I stopped playing the record, set the needle down and then tried playing it again. Now, the record would not spin at all. Later, I found that I could manually give the record a nudge in the right direction and the platter would spin. However, the speed is either too fast from the start of playing or it plays approximately half of the LP before randomly speeding up. Could anyone help me diagnose this problem? Is there a part I need to replace or should I look into a new turntable? Thank you, Josh Nightingale |
Turntable Help
Leonard Caillouet schrieb: Of course it would explain it. A belt that is stretched can ride onto the larger part of the spindle causing this effect. If adjustments were the solution, he would not have experienced such dramatic changes in speed. Ok, you're right, i see... I never found these effects with belt driven turntables. I am not familiar with the model, but if it is belt driven it likely needs a belt and the spindle cleaned. If it is direct drive, there is likely a defect that needs repair. If is direct driven please come back to my pots or switches. Udo |
Turntable Help
Josh Nightingale:
I have seen many worn belts that ride up or down on the motor pulley and end up riding on the LARGER DIAMETER edge, thus producing a much faster platter speed.... that is why I made the belt the FIRST and most simple culprit to check. Look at all the other reply posts to your original posting.... lots of good ideas. -- Best Regards, Daniel Sofie Electronics Supply & Repair ------------------------- "Josh Nightingale" wrote in message om... It's an Aiwa PXE860 belt driven turntable. Let me know what other details would be helpful. Someone elsewhere suggested to me that when turntable belts need replacing, it is usually because they are worn and slipping (or torn) and that the speed would slow down, rather than speed up. Any thoughts on this? Thanks Josh Nightingale "Mark D. Zacharias" wrote in message ... Really need brand and model info. Mark Z. -- Please reply only to Group. I regret this is necessary. Viruses and spam have rendered my regular e-mail address useless. "Josh Nightingale" wrote in message om... Hi, I am using an Aiwa PXE860 turntable currently. Recently, I was playing a 33 rpm LP and all of the sudden, the speed went up considerably for no reason. It sounded something like the LP being played at 45 rpms. I stopped playing the record, set the needle down and then tried playing it again. Now, the record would not spin at all. Later, I found that I could manually give the record a nudge in the right direction and the platter would spin. However, the speed is either too fast from the start of playing or it plays approximately half of the LP before randomly speeding up. Could anyone help me diagnose this problem? Is there a part I need to replace or should I look into a new turntable? Thank you, Josh Nightingale |
Turntable Help
Udo Piechottka ) writes:
Sofie schrieb: John Nightingale: If this is a belt drive turntable then the first place I would look is the belt. If stretched or worn it could ride up or down on the motor pulley That won't explain why the turntable runs faster. In case of a stretched or worn belt the speed would decrease when the belt slips. Yeah, my turntable turned a quarter century old in December, and it needs a little push to get started. One of these days, I really ought to replace the belt. Michael |
Turntable Help
"Leonard Caillouet" ) writes:
"Udo Piechottka" wrote in message ... Sofie schrieb: John Nightingale: If this is a belt drive turntable then the first place I would look is the belt. If stretched or worn it could ride up or down on the motor pulley That won't explain why the turntable runs faster. In case of a stretched or worn belt the speed would decrease when the belt slips. I often found noisy speed pots (possiply reference trims inside) causing this effect. Of course it would explain it. A belt that is stretched can ride onto the larger part of the spindle causing this effect. If adjustments were the solution, he would not have experienced such dramatic changes in speed. I am not familiar with the model, but if it is belt driven it likely needs a belt and the spindle cleaned. If it is direct drive, there is likely a defect that needs repair. Leonard If what you say is true, then it's specific to the turntable. My Lenco has a design that does not allow for the shifting that you attribute to turntables. The gizmo for changing speed moves the belt up and down on the spindle, My recollection is that the gizmo is relatively stiff, so the belt shift its position unless one specifically moves it, via the speed lever. Michael |
Turntable Help
Thanks to everyone for the replies. I took off cover on the platter
and managed to push down the belt some. As of now... it is working! At correct speed! I hope I have the problem fixed. I'll report back. Thanks much to everyone for the suggestions about the belt and it riding up and whatnot. I appreciate it much. Josh Nightingale (Michael Black) wrote in message ... Udo Piechottka ) writes: Sofie schrieb: John Nightingale: If this is a belt drive turntable then the first place I would look is the belt. If stretched or worn it could ride up or down on the motor pulley That won't explain why the turntable runs faster. In case of a stretched or worn belt the speed would decrease when the belt slips. Yeah, my turntable turned a quarter century old in December, and it needs a little push to get started. One of these days, I really ought to replace the belt. Michael |
Turntable Help
Josh Nightingale:
If the problem persists..... plan to replace the belt and clean up the pulley and platter where the belt rides. If the belt is slightly stretched or worn this can happen again. -- Best Regards, Daniel Sofie Electronics Supply & Repair ----------------------------- "Josh Nightingale" wrote in message om... Thanks to everyone for the replies. I took off cover on the platter and managed to push down the belt some. As of now... it is working! At correct speed! I hope I have the problem fixed. I'll report back. Thanks much to everyone for the suggestions about the belt and it riding up and whatnot. I appreciate it much. Josh Nightingale (Michael Black) wrote in message ... Udo Piechottka ) writes: Sofie schrieb: John Nightingale: If this is a belt drive turntable then the first place I would look is the belt. If stretched or worn it could ride up or down on the motor pulley That won't explain why the turntable runs faster. In case of a stretched or worn belt the speed would decrease when the belt slips. Yeah, my turntable turned a quarter century old in December, and it needs a little push to get started. One of these days, I really ought to replace the belt. Michael |
Turntable Help
Sofie wrote:
Josh Nightingale: If the problem persists..... plan to replace the belt and clean up the pulley and platter where the belt rides. If the belt is slightly stretched or worn this can happen again. If it's old (and it probably is, they haven't made many TT's in recent years), make plans to buy the belt NOW. There's little doubt that it needs replacing, even if the original problem doesn't reappear. jak "Josh Nightingale" wrote in message om... Thanks to everyone for the replies. I took off cover on the platter and managed to push down the belt some. As of now... it is working! At correct speed! I hope I have the problem fixed. I'll report back. Thanks much to everyone for the suggestions about the belt and it riding up and whatnot. I appreciate it much. Josh Nightingale (Michael Black) wrote in message ... Udo Piechottka ) writes: Sofie schrieb: John Nightingale: If this is a belt drive turntable then the first place I would look is the belt. If stretched or worn it could ride up or down on the motor pulley That won't explain why the turntable runs faster. In case of a stretched or worn belt the speed would decrease when the belt slips. Yeah, my turntable turned a quarter century old in December, and it needs a little push to get started. One of these days, I really ought to replace the belt. Michael |
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