All functions in my MX-J700 work perfectly well except for the tape
player. I tried cleaning the heads, capstans, and pinch rollers but
still when I press the tape button neither one of the two tapes seem to
be even working.
I also noticed that every time I turn on the system I hear a clicking
noise (6 clicks to be exact). When I turn on the system with both
cassette holders open, the clicking appears to be coming from both
holders. First, the "B" holder makes 3 clicks (clicks are made by what
looks like a white plastic piece in the lower right corner) while the
"panel" that contains the head and the pinch rollers is raised. After a
very short pause, the same goes for the "A" holder.
I have had this problem with mine what you can try is when it does the clicking sound you can take your fingers reach under the black part w/ the head and gently push up when it clicks if you hear more clicks and the part moves then try pushing and holding the tape switch located at the left or right top corners of the player then press play if the head goes up but the clicks 3 times fallowed by 6 clicks the repeat the process. what is going on is if they r not use it tends to lock up
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Without physically looking at the cassette deck myself, I cannot be 100% sure the tape is wrapped around the pinch roller and capstan. The capstan is the chrome rod which the rubber pinch roller pushes to regulate the speed of the tape moving across the head. However it is approximately a 90% chance the take up reel for the tape stopped working from a bad tape or a loose belt which drives the tape take up reel. The clicking sounds like it could be the auto reverse solenoid because it thinks the tape has reached the end of play. The fun part is to remove the tape which you may have to disassemble the front panel if you cannot gain access to the tape from the top or bottom. You will need to cut the tape and remove it from the capstan and pinch roller to open the cassette door. Sometimes you can remove the capstan to free the tape. Once you have cleaned all the tape out of the unit make sure the belt for the take-up is good. If it is glazed, cracked, loose or broken order a belt. Clean all the pulleys and capstan and replace the belt. Your unit should be functional after the above procedure.
Hi, Tape players have several rubber belts in it and if we do not use them frequently belts loosen and become useless and they need to be replaced... .
To accomplish this however you need some sort of handy man ability..
Take out the metal cover of the player by removing the screws on the
sides .after removing the cover you can access the tape head /transport
if you look carefully to underneath of tape transport you will see the motor unit which belts will be there...check the belts for the moving mechanism and make sure
the belts are not loosen / worn out or broken .
You can replace it with a new one that may available in radio Shack
Take care..and let me know if it does not work out.. Take care and please Remember to rate/vote for us to continue for Helping out the Community :)
When's the last time you cleaned the heads AND capstan? (Google it) Look at the edges of your tapes. Any irregularities will show up as warble or dropouts on the left channel. Also treat and store the tapes like you want them to last forever. It's pretty much covered on the cardboard insert that comes with a blank tape.
clean the capstan roller ,head as they are filled with dust and dirt accumulated on them and cause the tape to malfunction and jam ...you can simply open/eject the cover from where you insert /load the cassette then use a cotton bud dipped in methyl spirit/alcohol and carefully clean the roller and head after you are done use the other side of the cotton bud to remove excess of cleaning agent from them ..allow them to dry for five minutes keeping the cover open and then insert your tape again and enjoy the music without any break/jam.. just don't forget to clean your head,capstan roller once a month if you listen to tape regularly..... to maintain the long life of the player ..
There are only 2 motors on the VCR sections.1 motor for the rewind backward and speed foward.1 motor for take in the VHS tape and eject the tape.The play button also used the same rewind backward and speed forward motor to push the film foward to the VCR play head head drums to play the tape.
First try cleaning the heads with some electronics grade alcohol and a static free cleaning swab...although it sounds like the head may need alignment...if those two things do not work out for you, the capstan motor might be the culprit.
When a VCR eats a tape, it can be cause by a couple things.
1. There is a rubber wheel called a "pincher wheel" that compresses the tape against the "capstan". The capstan is a shiny metal spindle connected to a motor. The pincher wheel can become worn and/or dirty (slick) from the oxide coating off of the tape. You can try cleaning the pincher wheel and capstan with alcohol or try using a re-grip solution on the pincher wheel. Last thing to do is replace the pincher wheel. Look to see that the pincher wheel is doing its job by pulling the tape through.
2. There is a small tire wheel called an idler tire. This tire pivots between the sending and pickup reels of the player. Its also used during fast forward & rewind as well as play. If the tire is worn, the tape won't be wound up as fast on the take-up reel as the sending reel during play. This means more tape is coming out of the cassette than can be wound up on the takeup reel. You can try using a re-grip solution on the idler tire or replace it.
Let me know if you need more information as to where to purchase these parts.
Yes - There are cassettes available that are made out of clear plastic that allow you see what's happening. You can also trick the player into thinking there is a tape. There are sensors (mechanical & infrared sensors) that you can bypass.
Motor speed needs to be regulated by PWM. Reducing the current (with a resistor) actually lowers the torque - which, with a given load, does result in reduced speed - however, different length tapes (60min vs 90min), as well as different quality, and even current position in the tape, will change the load and hence the speed.
You need to regulate the speed via PWM. It's sometimes done on a small board built into the motor, in which case you'd have a round hole into which you could insert an INSULATED screwdriver (tiny flathead wrapped most of the way in electrical tape works).
It may be done on the main board, in which case you could find a pot conveniently labeled "motor speed", or perhaps "pulse width" or "pwm" or something to that effect. Find it, mark its current position just in case, and turn it to see if it gets the effect you're after.
And there are some tape decks in the world with no speed adjust - they are designed with a specific speed motor and the sizes of the wheels and gears are calculated for that speed.
Also there may be a mechanical fault/malfunction causing the speed problem.
An initial check and thorough cleaning of the capstan and pinch roller should be done. If there is a buildup of tape oxide or a piece of a broken tape wrapped around the capstan, the tape travel will be too fast (do to the effective increase in capstan shaft diameter).
If the pinch roller isn't fully engaging, the tape can be getting pulled onto the takeup spool at a speed faster than the capstan control.
A different source of trouble might be a slip clutch (possibly an
idler/clutch assembly)which is binding, or otherwise not functioning the way it should.
Another type of motor doesn't have it's speed controlled by an internal or external voltage.. instead, the motor has an internal centrifugal speed controller. This type of motor can be found on older tape decks, and might not have been utilized more recently.