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  1. Hiya - my son came over from the UK for Christmas so I got him to collect and bring back a Sony WM-5 cassette walkman as a birthday present and summer project. It was not working and in far from pristine condition but after considering a variety of different models, I decided I loved the look and design of this model best. The WM-5 is a relatively rare metal model that closely resembles the design of the WM-2 so I've referred to youtube and a digital copy of the WM-2 service manual to work on it. This is my first walkman project. I could hear the motor whirring when I put in batteries and pressed play but the capstans didn't spin. I suspected the belt had perished and confirmed that was the case when I took it apart. Note that, if you have one of these and want to take it apart, the play/ff/rw/stop buttons can get caught on the very thin aluminium fascia that surrounds them so you have to be very gentle working the body out of the case. Also, take good photos of the inside boards and thin wires in case you accidentally break them or for resoldering them. I found the original belt had turned to black goo and it took some time to clean it all from the wheels. I replaced the belt with one of similar diameter but 1mm width, which I bought in a pack of belts of varying sizes from Ebay. The buttons seemed to be working so I put it back together and have been testing it. My advice to anyone wanting to undertake this sort of project is to have all the tools, parts, DC power wart, grease and oil when you take your device apart - you don't want to have to take it apart more than once or twice as you increase the risk that something will break each time you do. I have got it working but I still have some issues to chase down (any help you can provide would be appreciated): 1. According to the part list for the WM-2, the dimensions of the belt are 44x0.9, which presumably is the diameter and width in mm? I've fitted one that looks pretty close to 44m diameter but it isn't easy to take an accurate measure of the diameter of a rubber belt! I have read that a non-standard belt can cause higher wow and flutter but this belt at least proves the motor mechanism works. 2. The ff button works fine and the motor action is smooth and relatively quiet but the rw button is unreliable. It will rewind for several seconds and then stop. If you press the stop button and then press the rw button again. It will start the action then stop quickly. Repeating will go back to rewinding for several seconds and then stop. The rewind action is noisy and not smooth. Also, sometimes, after you press the stop button after rewinding/ffwding, the left capstan starts turning for a few seconds before it stops?! 3. The play and stop buttons work fine except the play action is noisy to my ear (I can't remember how quiet/noisy walkman used to be!) and the noisiness varies metronomically. This might be causing the wow I'm hearing on the tape. However, I only have one tape to test the unit at present (I will locate some more) and while I think I detect some wow it might be the tape (it is an old and low quality children's story recording). 4. I have ordered some replacement screws for the several that are missing but I can't locate a replacement perspex window for my broken one. I see that you can get a replacement for the WM-D6 but I cannot find anything online to replace what has to be the most common walkman window in existence! 5. The matt black paint on the case has been scraped off in a few places and I would like to touch it up but don't know what product is best to use. I have thoroughly enjoyed my summer project so far, and I would dearly love to get it looking and running as well as it did in the 80s so any advice and encouragement would be gratefully received.
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