Mr. Volts ⚡️you had Arrangement, Concept, seamless BPM's, and flowing delivery. Not easy "mixing" slow music Dj, style. Well executed Sir. Dj Master J. Retired.😊
Nice job, Dave! I bought an RS-M228X brand new back in...I think it was '82. I would make custom tapes and play them at parties. I still love that thing to this day. Thanks for keeping these oldies but goodies going and sharing your repairs with us.
For shure the complex compact built quality is one of the reasons why you don't see these babys too often . This guy was very determined to get this thing working again . Great job !
your video's are really helpfull, I started out just repairing a pioneer CT-300 and ended up with 14 different deck's and have watched your video's to help me with some of the deck's, your video on the technics rs-m255x got me hooked and I bought one as I didn't have a dbx deck (I shouldn't be allowed loose at 4 in the morning with a credit card and ebay) keep the video's coming
I used to have one of these cassette decks that developed the same problem. I got rid of it as I was told the repair would be costly. Now I wish I had repaired it. It was a beautiful machine.
Hello It is advisable to change the belts and clean with special cleaning agent the pressure rollers. I did that earlier. all the best and a lot of fun....... nick from frankfurt
Alot Of People Used Turntables To Trancefer Records To Cassettes. Now People Trancefer Records To CD's Which I Think Is Fun To Do Too. I Enjoy Doing It. Cause You Can Put Them On You'r Phone & Tablet.
Thanks for sharing your know-how. Your videos are always a good learning experience for me, trying to resurrect electronics training I got more than 50 years ago, but stopped using shortly after getting discharged from the USAF. Incidentally, very useful tip about using rosin flux on the slipping belt. Was it the kind that's in liquid form or paste? It looks like MG Chemical, but hard to tell exactly which one.
Thank you for making such outstanding videos. I have learnt so much thanks to your generosity. I volunteer for the local branch of this movement which you might like to check out: repaircafe.org/en/
Nice deck, I'm currently hunting for an RS-B965 as I want to experience DBX now i've got the recording/mixing bug again, what type of tape did you record to? 1, 2 or 4? thanks
Very interesting! I would never have thought of using rosin like that to help a slipping belt! Makes sense as its acidic and I guess it likely etches the surface slightly. I would be tempted to take the lid off, put it on a flat surface and hammer out that impact dent ;)
@@12voltvids hey so I have been waiting for the right moment to use this rosin technique, and finally I decided after boiling the belt from a wx-fx195 walkman and not getting enough tension and lots of vibration (specially after the finish of the tape where it seems to pull harder till it stops playing), I went ahead and coated the belt lightly with rosin. Not knowing the way to do it properly I waited a while to let it dry, maybe an hr. Then i decided to put it on, but it was very sticky, (mind I really barely put any in there), but never the less I did put it on and started the tape, it seemed to play well, till I stopped it, and it wouldn't start again at all, no matter what I did, it did ff and rew, but not play. I took it off again and cleaned it with alcohol, sort of defeated I decided I would just get a new one, so I went to my welding class and when I came back i saw my desk with the walkman in pieces, and decided what the hell, I will test again, and whoa, it works now, testing for a while to see if it gets lose again, but so far so good. My question, could you expand a bit on how this technique works correctly? maybe a short video? did I do it the right way by mistake? Thanks so much, I hope you see this message. Can't say enough how much I like your channel and your way to explain and go thru the repair of everything electronic. Cheers.
I used to work in a repair shop, I hated those disc players, a small gear in the bottom would break and it cost a few dollars for the part but you had to charge the customer for the all the labor involved, it wasn't easy to replace and then align the gears.
Just to change the belt I put the rosin on would have taken easily an hour to disassemble and reassemble. They were a pain in the ass to work on that's for sure.
I have the RS-M280. Wish it had DBX. But it is a 3 head version of the 275. I am working on the transport too. Sure enough the transport locks up in play. I am replacing all the belts and idler playback take up. Transport is highly involved. Slipping belt is the hardest of the bunch to get too. Service manual is useless on how to remove that belt.
RS-M280 here also. I have in fact replaced the belt in question for the head block drive. The replacement seems to have held up longer than the original. But then it does not get as much use now. It's not exactly fun, although far from impossible. That belt started slipping about 2 years after it was first put into use when new (1980ish) and my repair guy at the time (40 years ago) only did the anti slip fluid. That works for a while but it is not really a solution. He totally refused to tear down the mechanism. The problem with finding belts lies with the dual capstan belt around the fly wheel. Many tries with belts I thought might work but did not. It has to be just right or it will ride itself off the the somewhat rectangular shaped integral crown on the left pulley. It has to be just right in width, thickness, length, pliability. The other thing that happens as the belt gets older is the left capstan speeds up with respect to the right. A loop of tape forms and the first thing you notice during record is the tape lifts off the erase head. The technical reason this happens is beyond my ability to speculate and sound convincing. At first cleaning the pulleys seemed to fix it but it would come back again. Although, in fact Technics put out a bulletin to update the left pulley/capstan size because of this problem (part substitution). I never got the redesigned pulley/capstan, but I did after many years of sitting and being pulled out of storage find a new belt that worked and that stopped the problem as well as the tape feed issue. For how long I don't know. AFAIK there is only one belt that is/was available that would work at all and that stops both these problems. The belt: PRB FRW 9.1 These at least are or were available in the US as recently as a few years ago. And there may be another belt available elsewhere that will work. The caveat is that it likely won't get you all the way down to the original W&F spec, but it worked good enough to get .035% WRMS on mine. The width of the belt in this case is more critical than it is in most other decks from what I noticed, I think because of the strange profile of the pulley crown on the sub-pulley (left). The Prb cross guide calls for FRW 8.0. The only thing I have to say about that is it must be in error. The actual measured length of the path around the pulleys is 9.3 inches. IMO opinion an 8 inch belt would be way too tight and this thing will give you trouble if the belt is even a little too tight.
The best (and most expensive) Technics cassette deck was model RS-9900US. It came in two parts, drive system and amplifier were separated units. It was built like a tank and very, very heavy. Though, it was easy to carry, since your wallet would be very, very light, once you paid for it. :)
The best? I seriously doubt that. Nakamichi had that camp sewed up. Tascam also had some serious decks. The RS-9900 was expensive for sure,a nd it cae as 2 seperate units. Big deal, it didn't even support metal or FeCr tapes. Just standard and CRO2.
Hey Dave I know that this is an older vid I have the same Technics cassette deck with the same problem with that belt, will MG Chemicals 835-100ML Liquid Rosin Flux is what you used. Thanks great vid as always
Why does it look easy for you to remove the front covers off the deck doors? I’ve been trying to remove the ones off my Panasonic decks without breaking them!
NORMALIZATION OF IGNORANCE - A Panasonic RX-DT610 Portable Stereo Component CD System from 1991. I bought it brand new with my pocket money when I was 15. ;)
Hello how are you I have a deck technics rs m280, when I play a cassette after about 10 or 15 minutes it starts to accelerate the playback speed extremely fast. It would be very helpful if you can give me some advice to solve this problem Thank you very much in advance and greetings
Not familiar with the model number. If conventional type motor it is likely the motor that is failing. Again, I am not familiar with that model number.
That's a direct drive quartz lock motor. There is no speed adjustment. It's possible the motor is flaking out. I refurbished mine in the sense of a recap. Many of the low voltage caps showed sign a minor leaking of electrolyte around the leads. It's pretty well established that the lowest voltage ones (lets start with 6.3 v) tend to leak fluid after 10+ years. You find these on all over the place in this unit, including the motor drive board and control boards that are mounted in the mechanism. Mine never had the problem you describe though. There were two versions of the DD motor driver also. I think that is covered in the schematic pages. Of course you should verify that the pinch roller pressure is at least reasonable and they and the capstans and rollers are clean. If the rollers can't grab the tape it will be pulled through faster by the take up real motor. It doesn't seem that would follow a consistent warm up period but I guess it's possible. This goes with checking that the head block is fully engaged by the cam also. There is procedure for checking the capstan pressure using a force gauge. But for this problem it would have to be way off the target pressure. I find the rubber in this deck has held up well in spite of decades of age. Only a person a much experience and patience for tedious work would think about taking this mechanism apart to fix the motor driver and the bad news is there are ICs there that if bad are not obtainable. Ok I looked at the service manual which has decent troubleshooting procedures for the motor. In the case of the motor speed almost doubling check the following: Make sure IC 502-507 all have vcc of 5v. If that's good check Q506 for being open. I imagine the almost double speed is the free running speed with no feed back FG signal control applied or essentially no speed control but with other things working. These checks are on the control board that is mounted on the mechanism. The problem I see from this check assumes the ICs are all good. Missing vcc vs bad chip? Slight correction: 5 of the 6 ICs in question in the motor control and drive are standard logic chips (Quad nand, quad nor). These can be purchased. I see the main motor control chip ic 501 on the bay right now (not part of this check). The remaining chip (oscillator) is also on the bay right now. So in any case I think this should be repairable. Also the difference between the two motor versions is the number of motor poles and the frequency of the signals (with some component changes and such). Otherwise the chips are the same. But I will note there is a 6.3 v remote cap on that 5v vcc rail in the mechanism.
Applying your fix will buy you some time, but it wants to be replaced, and yes that is the worst belt to get to too. Not fun. Also finding the belts is a royal pain.
@@-toma- shows how much you know idiot. Belt lasted for 6 years. I just tore it down a month or so ago and changed it because it started slipping again, 6 years later. I would call that a successful repair.
I use them only to digitize other people's material. I have no use for any tape format or analog format for that matter. Vinyl records make great frisbees.
@@12voltvids old Scratched Up Records Do. I'm Thinking Of Getting A Bunch Of Country 45's To Burn Onto CD's. That Would Be Cool. The Album Hard To Find 45's On CD Gave Me The Idea. Cool Huh?
@@rogertyler3237 I have a bunch of 45 records my dad bought from the clearance bin at a record store for me when I was 5 or 6. Probably never been listened too. Should look for them as they are here somewhere.
