Aftermarket cassette motor

[Jboulukos]

I have a Sanyo M-X650K with an aftermarket cassette motor with the hole at the back of the cylinder cover of the motor to control the speed. I haven’t been able to adjust the speed and have not felt that I was turning anything when I inserted a screwdriver. Is it possible that the screw came out and is laying inside the motor cover? Is it possible to open the motor cover in order to inspect the speed screw area? The speed control is the only thing remaining for my cassette deck repair. Any advice is much appreciated. Thank you.

 

[Josh9994]

It looks like you need a new belt. With a new belt installed you may not even have to adjust the motor. Once replaced check for proper speed. Don't forget to clean the path of the belt with q-tips and alcohol. I usually remove capstans, don't loose the nylon washers. I clean them and lube with a synthetic oil. The adjustment screw is right behind the black foam carefully punch through the foam with the screw driver. Once the tip is through the foam turn the screwdriver until you feel it drop into the screw head.

 

[BoomboxLover48]

It is possible to open up and clean the motor brushes and lubricate the bush bearing.
Once you open the back cover you will see the speed adjustment part of it.
Use a 2.0 to 3.0 mm flat head small screw driver.

Towards the end you can see using a flat head screw driver to adjust speed.

 

[Jboulukos]

It looks like you need a new belt. With a new belt installed you may not even have to adjust the motor. Once replaced check for proper speed. Don't forget to clean the path of the belt with q-tips and alcohol. I usually remove capstans, don't loose the nylon washers. I clean them and lube with a synthetic oil. The adjustment screw is right behind the black foam carefully punch through the foam with the screw driver. Once the tip is through the foam turn the screwdriver until you feel it drop into the d screw head.

Thank you for thorough info. The pic is old from when I was working on it in the past. I replaced the belts. Everything works except speed control. This unit was really messed with. I had to stabilize a crack circuit board with glue and match sticks and soldered in the wires to jump the crack. I tried adjusting the speed but did not feel the screw head. Is it possible the screw head is out of its hole and laying at the bottom of the motor inside the cover? I recently adjusted speed on a Big Ben Sanyo with aftermarket motor and was able to feel the screw immediately and adjust speed accordingly. For this unit, I never felt a screw in the hole. Any thoughts?

 

[Josh9994]

The screw is attached to the trimmer/ potentiometer with a small rivet, so I don't know how it fall out. I would think that maybe foam is still blocking the screw head, I would pull the motor apart and see what is going on under the cover if you can't feel the screw with the tip of the screwdriver.

 

[Jboulukos]

I

The screw is attached to the trimmer/ potentiometer with a small rivet, so I don't know how it fall out. I would think that maybe foam is still blocking the screw head, I would pull the motor apart and see what is going on under the cover if you can't feel the screw with the tip of the screwdriver.

Finally opened the unit and opened the back cover of the cassette motor. Does anyone see a screw? Geez, why would someone add a motor without the capability to adjust speed?????!!!!! I’m not crazy. I knew I didn’t feel a screw through the hole. I was hoping the screw needed to be replaced. But, no, there’s not even a hole for the screw. Does anyone have such a messed up Boombox???? Now I’m puzzled as to how the speed adjusts on this thing. Any ideas. I’m attaching images of all this mess.
no screw and not even a hole for a screw to adjust speed. Completely puzzled.

motor cover and foam off. Anyone ever see a motor with a hole for speed control but no screw? What the hell do I do now?
Any ideas?

 

[Jboulukos]

The wires soldered to the motor’s circuit board moved slightly and the speed significantly decreased. Bending them in no particular fashion sped up the playback but never too fast so the speed was always too slow. Then the hard wire broke off. I’m certain that this was jerry-rigged on there. No screw and no way to increase speed. I think I have exhausted all options for this unit. Besides just trying to find a replacement deck for it.
sometimes machines are too far gone, too messed with. Besides the motor with no speed adjustment and missing a motor mounting screw, a cracked circuit board requiring multiple wires to jump the crack and be soldered at both ends, missing faceplate screw so the cassette shifts diagonally when play is engaged….the only thing worse I can think of is inheriting a deck that had been thrown in a campfire. I’m going to just use the phono function to play LPs through this unit.
If anyone has a deck for sale for this Sanyo unit, let me know. I’d be happy to see what a normal one looks like.

 

[Jboulukos]

The screw is attached to the trimmer/ potentiometer with a small rivet, so I don't know how it fall out. I would think that maybe foam is still blocking the screw head, I would pull the motor apart and see what is going on under the cover if you can't feel the screw with the tip of the screwdriver.

No screw at all under the cover and under the foam. Ever see a motor like this? Hole in the back cover for speed adjustment but no screw, no potentiometer in sight.

 

[Hajidub]

That solder joint at the very top of every motor pic needs a reflow. Not sure it'll fix the issue, but that joint looks suspect.

 

[Jboulukos]

That solder joint at the very top of every motor pic needs a reflow. Not sure it'll fix the issue, but that joint looks suspect.

Thanks for the input but honestly, even if a single solder joint was fixed, where would the speed control be? I think it’s easy to pick out items from a photo. Of course a solder joint would be messed up but did you see the hole that leads to nothing? There’s no speed adjustment screw or even a hole for a screw. I can show you the cracked circuit board I fixed and other things too. Fixing a single solder joint on this machine is like filling a gallon of gas in a car without the spark plugs or even the holes to put the spark plugs. Thanks for the input.

 

[Superduper]

You are freaking out and blaming the factory for installing a motor without speed control, this isn't uncommon. The Sanyo M9990 also has non-adjustable motor. On yours, the original factory motor has (or had) a speed adjustment screw inside of it. The service manual specifically references that adjustment inside the motor for speed correction. The one you have might have been replaced or modified. Furthermore, that's some funky home diy resistor setup on the motor which clearly isn't factory. Maybe that's what whoever replaced it is using to adjust speed? Regardless, just replace the motor with an adjustable one and you'll be all set. I would investigate whether that resistor network is supposed to be there or not and restore it to factory before installing the new motor.

 

[Jboulukos]

You are freaking out and blaming the factory for installing a motor without speed control, this isn't uncommon. The Sanyo M9990 also has non-adjustable motor. On yours, the original factory motor has (or had) a speed adjustment screw inside of it. The service manual specifically references that adjustment inside the motor for speed correction. The one you have might have been replaced or modified. Furthermore, that's some funky home diy resistor setup on the motor which clearly isn't factory. Maybe that's what whoever replaced it is using to adjust speed? Regardless, just replace the motor with an adjustable one and you'll be all set. I would investigate whether that resistor network is supposed to be there or not and restore it to factory before installing the new motor.

Replacing the motor might be nice. But honestly, the deck is too far gone. Ever have a car and it breaks down, needs a transmission, but the windshield is cracked, but the wire harness has shorted wires? At a certain point, you end up replacing all the parts but could have bought a newer car and saved the time and money. Nothing lasts forever. I gave a lot of time to the unit and I learned a lot. I am very thankful for all the advice. The unit looks great and sounds ok with an LP playing using the phono function. That’s what I’ll use it for.

 

[Superduper]

Replacing the motor might be nice. But honestly, the deck is too far gone. Ever have a car and it breaks down, needs a transmission, but the windshield is cracked, but the wire harness has shorted wires? At a certain point, you end up replacing all the parts but could have bought a newer car and saved the time and money. Nothing lasts forever. I gave a lot of time to the unit and I learned a lot. I am very thankful for all the advice. The unit looks great and sounds ok with an LP playing using the phono function. That’s what I’ll use it for.

Makes sense. Unfortunately, cars have new replacements. Boomboxes do not. Sounds like you just need a new motor, which isn't that costly. But it's up to you if you want to invest anymore time, money, blood. Might be better to buy another boombox that has lower miles and in better overall shape then. Honestly, I personally don't even use cassettes, I prefer CD which sounds better, can move from track to track instantly and doesn't have the background noise of cassettes, especially when not hifi decks. On the other hand, you can't record on CD like you can tape.

 

[Radio raheem]

agree with Norm btw you can record on cd with a cd writer was doing that 20 years ago..........personally i just use youtube now connected to my hifi, it's been about 15 years since i used a boomer outdoors, hope you can sort the issues out buddy