Hi guys. Im currently working on a new walkman. I have my WM-F65 on the workbench partially disassembled and completed the following: - removed old degraded belt and replaced with new belt - cleaned and lubricated capstan bushing I have conducted a test with 3V centre negative DC. I am able to get all pulleys to spin if I hold down the play button or FF or RW buttons, however there is a clicking or maybe better to describe it as a scraping noise happening somewhere. I believe it may be near the middle flywheel which I believe is the take up reel. Maybe the clutch on it is broken or a tooth is missing somewhere? This flywheel has a lot of lateral play. I assume this is not how it should be. I've not yet worked out how to remove this wheel to inspect further but its looking to be a big job Any advise? Has anyone worked on a F65 or similar in the past? Video of noise during playback. https://youtube.com/shorts/4TTV82Llpbw?si=Vaosrg6a9vahNB2R
Check the outer ring gears on the hubs for splits between teeth. Very common on this mechanism. Complete disassembly is the only way to get them out, then remove the tiny keeper on the hub shaft.
Thanks I'll try inspect the reel gear. It is quite a nightmare to get to. It does look like you can buy this part at least on ebay
You should be able to see a crack in the gear from the cassette tray side. I used a couple of those gears from eBay and they seem to work okay.
I can't seem to see to find any way to inspect gear from tape side. Are you seeing something in not? I might have to remove PCB
The black ring around the rim is part of the gear. If you see a split or gap in that, the gear is cracked. The gear teeth are just under the lip of the cassette tray at that edge.
When you get in there, take lots of pics, particularly of wire placement and solder joints. I didn’t have to do much desoldering, but I did do some resoldering as the wires are fiddly and tended to break at the solder joints.
Very good advice. I must admit I forgot to take photos of pcb and wires. fingers crossed now have come off already
Hi mate. I spent alot of time today replacing the take-up reel outer teeth. Along the way I encountered several problems including broken wire at solder joint and misalignment on the leaf switch. Both those are currently fixed. But when I play test the walkman I can hear a scraping sound coming from the take up wheel. It seems to be scraping on the metal on the opposite of the cassette side. I can confirm it is scraping here as when i put my finger on it to try get it to spin evenly the noise goes away. It seems to have become eccentric during the replacement process. I am quite annoyed as this too a long time to repair so far. Any tips for me? After it tries to play for a few seconds it cuts out Im not sure if its from excess tension from the scraping or it senses lack of cassette in machine
I had one like that, too. I ended up straightening the main frame a tiny bit - I must have bent it somehow. Make sure the shield over the belt and motor isn’t bent, too. And, make sure the two spindle gear chassis are centered in their frame cutouts. It’s fiddly work, but worth it, at least to me.
On your one was it the supply or take up reel frame that was bent? The author of this repair video says he doesn't recommend replacing the take up reel as its fixed in there. Im not sure what he means by that as that's the one I replaced. But he is right in that I seem to have damaged or bent something I'm trying to visualize how I should go about this. the first thing I suppose I need to try to take out the main frame of the take-up reel out somehow to inspect it and see where its rubbing The take-up reel 'thrust clearance' seems to be very fine margins
In that last clearance document I attached I've noticed there is precision shims/spacers 137, 138, 122, 121. I guess its almost possible these fell off during the repair
After playing around this for a hour and a half I gave the centre pull a good clean underneath as there was some rubber residue and also re-lubricated everything and slightly bent down the hub frame. the aggressive scraping noise appears to be gone. there is still a small amount of noise - it may be due to the slip clutch spring mechanism but its definitely much less than before. I have not tested the unit with a tape in it yet but i have tested: - Pressing play. The system seems to spin slowly without any visible faults. Edit: I put back together and playback if working fine however I believe auto-stop isnt working when it reaches end of tape. - Pressing Fast Forward. It turns fast for a couple of seconds then suddenly stops. When stops it still draws 20mA and button is still pressed in - Pressing Rewind. It turns fast for a couple of seconds and suddenly stops. When stops it still draws 20mA and button is still pressed in Anyone able to provide some more knowledge on this. I suspect the auto-stop mechenism is faulty. I would like to understand how this works in detail but cannot find any information videos to help visualize it. I do not know if it is causing the FF and RW to cut out after a couple of seconds - even with a tape installed. Any ideas? Please share you knowledge
