I would think that the motor had a dead spot in it. As you operated it a few times, the oxidation on the brushes cleared and the motor is now running correctly.
Nice deck. I had an Aiwa xk009 long time ago. Paid £150. I wish I still had it. It too started munching tapes and I threw it away. Turns out it just needed a rebuild kit including new pinch rollers. They sell for £1000 now , DOH!!!
I can tell why a lot of ( all kinds 8 track, RtoR, even radio station carts) tape machines eat tapes . AEROSOL BUG KILLER!!! Even a VERY fine mist of this stuff will solvent the capstan drive rubber and other parts enough to make them sticky enough to grab the tape. I had a severe roach problem in a duplex I lived in. I set off an insect bomb and it wiped out every tape deck I had.
Normal operation: dual pinch rollers assembly engaged first, shortly right afterwards the heads assembly engage. The tape transport got hung up right before the heads assembly supposed to engage. You will need to remove cam motor and corresponding gears. Clean and re-lube all the gears is the cam assembly. You will also need to disassemble the cam motor and clean off the oxidation built up on the commutator. Wish you the best of luck!
Nice video. I'm wiling to bet money that there's a dead spot on the commutator of the cam motor. Once you got it moving back and forth as many times as you did, it cleaned off the carbon build up. But it will come back soon. The cam motors on the Naks are all notorious for this and you'll find plenty of videos from different models going over this cam motor and how to service it. But one thing you didn't talk about that is notorious for eating tapes is how clean was the tape transport? The thing that eats tapes is a dirty pinch roller. But near the end of your video, you said you cleaned the capstans and pinch rollers which should be your regular culprits. So I doubt it will now eat tapes for quite awhile. But, if the cam motor hesitates again to lift the tape transport, the pinch roller could very well continue to grab tape and eat it.
Doh @NorCal715 ! I forgot to think about one other issue that makes a bx300 eat tapes. If you remove the backing plate from the tape transport, you’ll see a (or should see) tension belt on the supply reel. When that belt gets stretched out, the deck will start to eat the tape after the take up reel builds up enough tape. The other thing that can happen that is notorious on the bx300 is the idler (not to be confused with the cam motor) motor will have a dead spot just like the cam motor! That motor is not the same as in the bx100, 125, or 150 so they can’t be swapped in to the 300. I just made a video on how to service that motor but have not edited yet. My 300 had both a stretched tension belt and idler motor dead spot.
@@HealthFitnessMartialArtsDEng Very important information. I have DR 2 ,of Nakamichi ,this also has almost sane mechanism and it was chewing my cassettes and which was diagnosed as the loose back stretch belt .
That’s so funny this video popped up. I’m actually working on a customers BX-300 at this moment. Though this one has a definite fault, the servo drive motor that drives the capstan isn’t working. I was like, woah, another BX-300.
I suppose that the grease being applied to the shaft and gearset for the loading and unloading could perhaps cause the mechanism to drag! This is my assumption. All other services have been carried out, accept what i just mentioned. If it means having a mechanism such as that gearset for the loading and unloading, I'm gonna suggest using a lubricant like this one: AGS SIL-Glyde Multi-Purpose All-Weather Lubricating Compound for All Surfaces! Once you clean all shafts. cams and gearsets using a solvent and completely air dry with compressed air and wipe dry. But then there after, be quite cautious about how you and how much you apply to said surfaces! You don't want that stuff to end up on switch contact sets, etc, etc! This product has been used in the automotive industry for at least 25 years now on new speedometer cables, brake caliper pads tabs and adjusters etc as they are supposed to "Glide" without sticking and help prevent seizures. With the use of a really good que tip, use that or a small acid free brush, to the intended surfaces and don't overdue it or it will be in places where you don't want it to be!
You likely had a dirty spot on the commutator of the loading motor. If that spot is under the brushes when the motor starts, it stalls. This would also account for the very infrequent failure. How often is the bad spot on the commutator going to land under the brushes? Back ine days of 8 tracks, we would disassemble the motor, clean the commutator with fine sandpaper (400 grit), and the centrifugal speed regulator contacts. Once you cleaned the regulator contacts, the motor speed was changed. So then you had to reset the motor speed by tweaking the regulator set screw, and rewrap the motor in its mu-metal shield. They made those motors serviceable; don't know if you can open that one without destroying it.
Ain't that always the way? Dang intermittent faults that only seem to happen to the customer and not when you test it. Had this happen with a PC that in the customer's home will reboot shortly after playing a game. Tested the PC for 6 straight hours trying to get the system to repeat the hang while playing video games and it refused. Gave it back and within 30 minutes the PC hangs. 🤯
@@randyr.parker2698 Until very recently I had a functional 8 track player as well. My wife continually pestered me about its purpose in our home until I finally donated it to a local resale shop. (Sigh)
I would think that the motor had a dead spot in it. As you operated it a few times, the oxidation on the brushes cleared and the motor is now running correctly.
Nice deck.
I had an Aiwa xk009 long time ago. Paid £150.
I wish I still had it. It too started munching tapes and I threw it away.
Turns out it just needed a rebuild kit including new pinch rollers.
They sell for £1000 now , DOH!!!
threw away? waw
I can tell why a lot of ( all kinds 8 track, RtoR, even radio station carts) tape machines eat tapes . AEROSOL BUG KILLER!!! Even a VERY fine mist of this stuff will solvent the capstan drive rubber and other parts enough to make them sticky enough to grab the tape. I had a severe roach problem in a duplex I lived in. I set off an insect bomb and it wiped out every tape deck I had.
Normal operation: dual pinch rollers assembly engaged first, shortly right afterwards the heads assembly engage. The tape transport got hung up right before the heads assembly supposed to engage. You will need to remove cam motor and corresponding gears. Clean and re-lube all the gears is the cam assembly. You will also need to disassemble the cam motor and clean off the oxidation built up on the commutator.
Wish you the best of luck!
I did that rewind trick back in my day with a magnetic tip screwdriver... Oops.. Lots of drop outs.... Another Great Video.
I guess the reel motor sometimes stuck and don’t pull the tape, as in playback mode it is supplied with the lower voltage to keep a lower torque.
Nice video. I'm wiling to bet money that there's a dead spot on the commutator of the cam motor. Once you got it moving back and forth as many times as you did, it cleaned off the carbon build up. But it will come back soon. The cam motors on the Naks are all notorious for this and you'll find plenty of videos from different models going over this cam motor and how to service it.
But one thing you didn't talk about that is notorious for eating tapes is how clean was the tape transport? The thing that eats tapes is a dirty pinch roller. But near the end of your video, you said you cleaned the capstans and pinch rollers which should be your regular culprits. So I doubt it will now eat tapes for quite awhile. But, if the cam motor hesitates again to lift the tape transport, the pinch roller could very well continue to grab tape and eat it.
Good insight into the issue and right on the spot .
Doh @NorCal715 ! I forgot to think about one other issue that makes a bx300 eat tapes. If you remove the backing plate from the tape transport, you’ll see a (or should see) tension belt on the supply reel. When that belt gets stretched out, the deck will start to eat the tape after the take up reel builds up enough tape.
The other thing that can happen that is notorious on the bx300 is the idler (not to be confused with the cam motor) motor will have a dead spot just like the cam motor! That motor is not the same as in the bx100, 125, or 150 so they can’t be swapped in to the 300. I just made a video on how to service that motor but have not edited yet. My 300 had both a stretched tension belt and idler motor dead spot.
@@HealthFitnessMartialArtsDEng Very important information. I have DR 2 ,of Nakamichi ,this also has almost sane mechanism and it was chewing my cassettes and which was diagnosed as the loose back stretch belt .
@@umeshupadhyay... yes, same direct drive tape transport for the DR2, BX300 and MR1.
That’s so funny this video popped up. I’m actually working on a customers BX-300 at this moment. Though this one has a definite fault, the servo drive motor that drives the capstan isn’t working. I was like, woah, another BX-300.
It just got old and lazy, and needed to exercise, like I need too! 🤣
I suppose that the grease being applied to the shaft and gearset for the loading and unloading could perhaps cause
the mechanism to drag! This is my assumption. All other services have been carried out, accept what i just mentioned.
If it means having a mechanism such as that gearset for the loading and unloading, I'm gonna suggest using a lubricant
like this one: AGS SIL-Glyde Multi-Purpose All-Weather Lubricating Compound for All Surfaces! Once you clean all shafts.
cams and gearsets using a solvent and completely air dry with compressed air and wipe dry. But then there after, be quite
cautious about how you and how much you apply to said surfaces! You don't want that stuff to end up on switch contact
sets, etc, etc! This product has been used in the automotive industry for at least 25 years now on new speedometer cables,
brake caliper pads tabs and adjusters etc as they are supposed to "Glide" without sticking and help prevent seizures. With
the use of a really good que tip, use that or a small acid free brush, to the intended surfaces and don't overdue it or it will be
in places where you don't want it to be!
You likely had a dirty spot on the commutator of the loading motor. If that spot is under the brushes when the motor starts, it stalls. This would also account for the very infrequent failure. How often is the bad spot on the commutator going to land under the brushes? Back ine days of 8 tracks, we would disassemble the motor, clean the commutator with fine sandpaper (400 grit), and the centrifugal speed regulator contacts. Once you cleaned the regulator contacts, the motor speed was changed. So then you had to reset the motor speed by tweaking the regulator set screw, and rewrap the motor in its mu-metal shield. They made those motors serviceable; don't know if you can open that one without destroying it.
Ain't that always the way? Dang intermittent faults that only seem to happen to the customer and not when you test it. Had this happen with a PC that in the customer's home will reboot shortly after playing a game. Tested the PC for 6 straight hours trying to get the system to repeat the hang while playing video games and it refused. Gave it back and within 30 minutes the PC hangs. 🤯
I thought perhaps I was the last guy on earth with a functional tape deck. Guess not.
I have 3 8-tracks, with some tapes! 🤣🤷♂
@@randyr.parker2698 Until very recently I had a functional 8 track player as well. My wife continually pestered me about its purpose in our home until I finally donated it to a local resale shop. (Sigh)
I had a tape recorder that loved to eat my tapes real bad!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!