Sony WM-A12 All other components seem fine, it's just an issue with the circuit board.
A broken circuit board, depending on the break, where and how it is broken, often renders it scrap as it would require the skill of a surgeon to effect a repair with delicate tools such as a surgeon might wield. This is doubly so in the case of a double-sided circuit board...
A cracked circuit board on the other hand, where only a few tracks are broken, is a different matter. The crack can be realigned and stabilised with Superglue, the varnish carefully scraped from the damaged tracks either side of the crack for a quarter inch and then a suitable strand of solid copper wire soldered in to bridge the break.
Where a track is impossibly narrow, it is possible to solder in a short jumper wire from a suitable point to another convenient point, ensuring at all times to use as little heat as possible.
SOURCE: MTP DEVICE Sony 4gb walkman NWZ-S616 not installing
if you have a problem about MTP Device and wont be able to show in your "My Computer", here are tips that may help you fixed your problem:
*First- Uninstall the MTP Device Driver in your system.(Right click My Computer then manage, then click Device manager at the left part, then after that, find MTP Device in your right part, then click and Right click the name of your MTP Device then uninstall.)
*Second- Reconnect the device and then after a pop-up show which says, New hardware found,
click install the driver in a specific location, then choose the bottom option and then choose
Storage Device.
*Lastly- Turn On your Device and search it in My Computer.
that's all, and i hope i do a little help to you!
Mark Anthony Quintana
SOURCE: Sony Walkman WM-D6C
If your WM-D6C has a serial number below 267201 (take out the battery block and you'll see the serial number sticker there) then the problem is electronic, not mechanical. It is likely due to the speed controller chip (labeled as IC601 on the circuit board), which is made by Sony and is type CX20084. This chip decides the voltage that is fed to the motor which is only about 2.4 volts, Should the chip be defective then the motor receives about twice this voltage and thus runs too fast. If you take the back off the recorder you will see the circuit board; it looks like a rectangle with a small square extra bit sticking out to the right. It is here that the IC601 resides. It is about the size of a small pinky finger nail and has 8 tiny legs down each side. Measure the voltage on pin 15 (put one voltmeter probe (+) on the second leg down on the right side (pin 15) and the other one (-) on the battery negative), it should read about 4.8 volts, which it feeds into the base of transistor (Q601) that in turn will then feed 2.4 volts to the motor (if everything is working OK). If the chip is damaged, then the voltage on pin 15 will be close to zero, and the transistor Q601 will not be "held back" and so will feed about 5 volts to the motor. CX20084 is (unfortunately) obsolete, someone in the UK sells them for about $50, but an excellent company in Hong Kong (utsource.net) sells them for $5 (plus $8 S&H).
Taking out the old chip and putting in a new one is close to microsurgery, you will need a micro soldering iron (18Watt Antex), a good eye, a powerful magnifying glass and a steady hand, but it can be done - I've done it!
There is a possible second reason that could cause the motor to run too fast. There is a pick up coil on the main flywheel called FG901. If this is damaged it will be open circuit and then the only use for your recorder is probably a paper weight. You can test this by going back to chip IC601 and locating pin 1 (top left pin; a small circle on the body of the chip is next to pin 1), Pin 1 is connected to the positive side of a capacitor, C602 (0.47 microF), check the resistance from the negative side of C602 to the ground (take battery out, and use battery (-) as ground). You should get about 600 - 650 ohms reading. If you get nothing, sorry there is not much you can do about it as these pick up coils are definitely not available.
Finally, chip 601 (CX20084) goes bad if you connect the batteries back to front. Good luck.
Giles..
SOURCE: I need the software drivers for my Sony Net MD Walkman MZ-N505
Hi,
Click Sony Support and download required software of MZ-N505 by selecting Vista OS in drop down list there.
SOURCE: i have a Schumacher WM-10000A speedcharger and need fuse size
The fuse is a 12.5 Amp 250 V Fuse. I have the same charger and I think mine is toast. Replaced the fuse and it blew.
SOURCE: how to replace the drive belt on the sony walkman
Since this is a very small player what is important is to be very careful and delicate to open the rear cover and do the repair. The printed circuit board has to be removed and moved up carefully not to damage or detach wires. Now remove the capstan cap and take out the old belt, check the size with the new one and if OK run in the same direction you had taken out. replace the lid and the pcb carefully and fix the wires according to the same pattern so as not to touch the belt and drives. Now put in a cassette and test. If it works ok with the speed close the rear cover. clean the headd, the rollers and the transport section . Now your tape has been serviced and must work well. Hope my advice helps you . Good day
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