Where do I find belt kit for a wm fx290 and part # for this belt kit

Hello Peter, in order to disarm your Sony WM-F2031, you have to follow the steps indicated in the service manual, in this in turn refers to consult the service manual of the Sony AF-23 Walkman, which uses the same cabinet
I send you the links of the two service manuals so you can disarm it and change the belts
I hope you achieve good results
Greetings Franco Dosil

Hola Peter, para poder desarmar tu Sony WM-F2031, tienes que seguir los pasos indicados en el manual de servicio, en este a su vez hace referencia a que consultes el manual de servicio del Walkman Sony AF-23, que utiliza el mismo gabinete
Te env?o los links de los dos manuales de servicio para que puedas desarmarlo y hacer el cambio de las correas
Espero que logres buenos resultados
Saludos Franco Dosil

https://freeservicemanuals.info/en/servicemanuals/download/Sony/wm-af23.pdf
https://elektrotanya.com/sony_wm-f2031.pdf/download.html

You may download the manual from here.

Does it have buttons 1-6 on it????? If it does try going to station and try pushing and holding button one.....until it stops blinking.....

my walkman wm-fx141 is doing, try the belt.

ebay.

Fault with the drive belts, remove rear covers and take sample belt to buy and replace. Might be difficult to get them but in old stocks.

motor belts are cheap. try replacing the belt that drives the wheel. this become distorted specially when the unit has not been use for quit long time. if you think its not about belt, clean up the rubber that touches the tape when played, also the tape head with 70% alcohol. hope this help.

I have this walkman too and also need the instructions. I found them at this website:
http://www.docs.sony.com/release/WMFX290.pdf
I hope that helps you out!

the belt which s at presently fixed is not of proper size change the belt and try it. the drum will run properly

Of course, I have to start with the obvious. Try changing batteries and headset and see how that helps.

I would get some cleaning solution called deoxit, and clean the battery leads. Also coat the headphone jack with it and put the jack into the player. Recoat and try again. Twist the jack around, it should help distribute the solution.

If the static is caused by a poor connection, that should clear it up.