fourbanks Posted October 23, 2015 Author Report Share Posted October 23, 2015 5 belts will last at least 20 years i think the main thing is to make sure that any spare parts are kept in good storage. i'm hoping my next unit will be like new so that i'll have most of the spares for it from my unit i just broke a hard lesson learned and at the age of 60 i haven't done to bad in this hobby the only other error i have made was getting rid of jvc vhs machine on an easily rectified fault for a new super vhs machine thinking it would be better to buy new then pay out 70 pounds on a 5 year old player and i was wrong as little did i know that i had bought the best vhs machine ever built as most of the internal components were that of it's bigger brother from the super vhs model and made in japan and the new model i purchased had come about at the start of downturn in japan and was now made in Germany and with regret and i have the 2 top German players not as good as my standard vhs I think all of us have made errors at some point the idea is if you can learn from mistakes then you can then pass your knowledge onto others and with confidence Quote Link to comment Share on other sites More sharing options...
sfbp Posted October 23, 2015 Report Share Posted October 23, 2015 (edited) i did not Stephan which was a bad error on my part as at the time it would not come out where as before he had albeit hit and mis Then my bad. I did urge you not to wait - of course what happened was you waited until the disk was firmly stuck in the unit. I will edit my instructions just in case....It's not difficult to get the hinged part off. But with a disk in there, it was doubtless locking and jamming everything and you probably bust the overWRITE head (it's electrical, and is nothing to do with LIGHT, just someone back East mixing up their l's and r's in writing the manual) which is easy to do.You CANNOT use the 730, it doesn't do MDLP, and it won't fit in the 940. I thought I already pointed this out, sorry (again) if I did not in fact.Five belts will only last 20 years if you keep them in the DARK as was pointed out to me in my very last communication from Jim. Edited October 23, 2015 by sfbp Quote Link to comment Share on other sites More sharing options...
freddyjollo Posted October 23, 2015 Report Share Posted October 23, 2015 thats why I berate the use of a small special purpose rubberband for such a non audio action, that will render the deck frustratingly useless( every thing else working), whereas some gears/cogs would have done much better and would I bet have worn better as the insert/ejection process not some thing that happens frequently, & wouldnt have worn out just by being inactive? You can bet I ll be storing the rubber bands in the black hole of calcutta. As I have 4 decks I may need to get more..... Will see what the first ones are like. Quote Link to comment Share on other sites More sharing options...
fourbanks Posted October 24, 2015 Author Report Share Posted October 24, 2015 Then my bad. I did urge you not to wait - of course what happened was you waited until the disk was firmly stuck in the unit. I will edit my instructions just in case....It's not difficult to get the hinged part off. But with a disk in there, it was doubtless locking and jamming everything and you probably bust the overWRITE head (it's electrical, and is nothing to do with LIGHT, just someone back East mixing up their l's and r's in writing the manual) which is easy to do.You CANNOT use the 730, it doesn't do MDLP, and it won't fit in the 940. I thought I already pointed this out, sorry (again) if I did not in fact.Five belts will only last 20 years if you keep them in the DARK as was pointed out to me in my very last communication from Jim.is the JB 730 any good in case i'm unlucky in getting hold of a 940 i know the parts wont work in it but i'm after a good unit so may have to get hold of anything that's at least as good as the 940 i have my old 920 special edition and might even get hold of one of those if needed as it's been a superb unit but with the display fading to a level i can no longer see it it still works well none the less but at at least 15 years old it will pack up at some point i'm sure Quote Link to comment Share on other sites More sharing options...
sfbp Posted October 24, 2015 Report Share Posted October 24, 2015 IT DOESN'T DO MDLP, so in no sense is it a replacement for the 940.If you don't care about MDLP then the 920 and 930 will be better models than the 730. Quote Link to comment Share on other sites More sharing options...
fourbanks Posted October 24, 2015 Author Report Share Posted October 24, 2015 (edited) IT DOESN'T DO MDLP, so in no sense is it a replacement for the 940.If you don't care about MDLP then the 920 and 930 will be better models than the 730.thanks Stephen Edited October 24, 2015 by fourbanks Quote Link to comment Share on other sites More sharing options...
freddyjollo Posted October 25, 2015 Report Share Posted October 25, 2015 I see there is on ebay uk this jb940 going -http://www.ebay.co.uk/itm/Sony-Minidisc-player-MDS-JB940-/252136955041?hash=item3ab4889ca1:g:i-EAAOSwAYtWKRez has a scratched case but maybe transplant the mechanism? the scratched case may keep the price lower? seems like prices in general have gone up very much - I bought my 2 spare JB940 a couple of years ago for about £70-80 each. I saw this advert. is this the bit that broke?http://www.ebay.co.uk/itm/Sony-MDS-JB-940-MD-Losch-und-Schreibkopf-Head-over-Light-NEU-/140989709713?hash=item20d3a43d91:g:qWUAAMXQ9qpRXYyb Quote Link to comment Share on other sites More sharing options...
fourbanks Posted October 25, 2015 Author Report Share Posted October 25, 2015 (edited) I see there is on ebay uk this jb940 going -http://www.ebay.co.uk/itm/Sony-Minidisc-player-MDS-JB940-/252136955041?hash=item3ab4889ca1:g:i-EAAOSwAYtWKRez has a scratched case but maybe transplant the mechanism? the scratched case may keep the price lower? seems like prices in general have gone up very much - I bought my 2 spare JB940 a couple of years ago for about £70-80 each. I saw this advert. is this the bit that broke?http://www.ebay.co.uk/itm/Sony-MDS-JB-940-MD-Losch-und-Schreibkopf-Head-over-Light-NEU-/140989709713?hash=item20d3a43d91:g:qWUAAMXQ9qpRXYybthanks freddy i may go for this i'm going to keep an open mind and yes that was the part that broke so that to could be another angle to look at. if a did go down this route tho i would get the complete lens i'm looking at this also but my gut feeling here this will reach top money http://www.ebay.co.uk/itm/SONY-MDS-JB940-QS-Minidisc-Deck-Remote-Excellent-Condition-99p-NR/121794562101?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D33840%26meid%3Dfb290ee7bc13428d876882b293b098ae%26pid%3D100005%26rk%3D1%26rkt%3D6%26sd%3D252136955041also what is the difference between the uk model and the copper screws and the EU model ? Edited October 25, 2015 by fourbanks Quote Link to comment Share on other sites More sharing options...
freddyjollo Posted October 25, 2015 Report Share Posted October 25, 2015 yes and still 6 days to go. will go for some silly price. I think the time gone now for cheap ones on Ebay?"UK Edition" which according to Sony is "specially tuned for British ears". I think they tweaked the insides a bit the odd component. don't know if was much of a difference. I suspect compared to hifidelity these days a bit of a joke? I anyway run all my digital thru a new Audiolab 8200CDQ dac I just got at an end of line price reduced from £1000 to £600 so any changes to the audio circuitry irrelevant. Quote Link to comment Share on other sites More sharing options...
sfbp Posted October 25, 2015 Report Share Posted October 25, 2015 Nick, you won't be able to install the laser. Jim can do it. I can do it. Your electronic friend probably WON'T be able to. Quote Link to comment Share on other sites More sharing options...
fourbanks Posted October 25, 2015 Author Report Share Posted October 25, 2015 Nick, you won't be able to install the laser. Jim can do it. I can do it. Your electronic friend probably WON'T be able to.thanks for letting me know i'm going to bid on a few on ebay to see how the land lies if you should see anything that is good then please let me know as i may indeed mis something Quote Link to comment Share on other sites More sharing options...
sfbp Posted October 26, 2015 Report Share Posted October 26, 2015 Try this one: if you check the service manual you will find it has an MDM-7A which you can drop right in to your 940. Look in the service manual of any unit you find. The ones you need will be made in 2000 or 2001, and will have this type of drive, listed on the first page of the service manual in big letters.http://www.ebay.co.uk/itm/SONY-MDS-JE470-MINIDISC-RECORDER-in-Silver-/221909035527Alternatively, simply hang on to it. It does PC-Link which your 940 does not. To me that PC-Link connector is more valuable than the keyboard - however beware that I am not certain it does both. So if you need a keyboard model, keep looking. The JE770 does do both keyboard and PC-Link. Note that the x80 decks have a different, more advanced unit in them, which you do NOT want.There's also this one:http://www.ebay.co.uk/itm/Sony-MDS-JE440-Mini-Disc-Player-/171975757516However we have no idea what the auction will take it to. There are some wildly overpriced 440's listed as of today.Any 440, 470, 640, or 770 uses the same MD unit and should be fine. There are frequently bargains on these, if you watch carefully. Check the completed listings to see what they typically sell for (it's an option under Advanced Search).Stephen Quote Link to comment Share on other sites More sharing options...
fourbanks Posted October 27, 2015 Author Report Share Posted October 27, 2015 i have gone with this unit a sony uk badge from a dealer with one owner http://www.ebay.co.uk/itm/252142891686 Quote Link to comment Share on other sites More sharing options...
freddyjollo Posted October 27, 2015 Report Share Posted October 27, 2015 i have gone with this unit a sony uk badge from a dealer with one owner http://www.ebay.co.uk/itm/252142891686did u get it? The final price is way more than I would want to pay when I consider I got my 980 new for about £230 way back Quote Link to comment Share on other sites More sharing options...
freddyjollo Posted October 30, 2015 Report Share Posted October 30, 2015 well got my 5 belts today. Comparing the old with new, the old had stretched quite a bit! Just replaced the old one. I think best to take off the hinged bit, rather than try and poke the belt thru the front? - not very hard after the tiny spring on the side has been pulled off ( I used a needle ) Then used a pair of tweezers I have never used before the put the new one on. Result one now fully working JB940. I am glad this post was made by the op and the resulting links, as I would not have had a clue what the matter was. Sorry that his attempts at remedy didnt succeed. Quote Link to comment Share on other sites More sharing options...
fourbanks Posted October 30, 2015 Author Report Share Posted October 30, 2015 i manged to get hold of a newish 940 uk edition unit off ebay so all is now good Quote Link to comment Share on other sites More sharing options...
freddyjollo Posted October 31, 2015 Report Share Posted October 31, 2015 I am now pondering actually removing all the rubber bands of the 3 decks I have in storeage. Maybe the rubber deteriorates on its own but it cant help the rubber bands being stretched in storeage. Maybe be able to stave off the other belts failing in storage? Quote Link to comment Share on other sites More sharing options...
sfbp Posted November 6, 2015 Report Share Posted November 6, 2015 This may be of interestThe bands he uses are really horrid. But it may solve the problem in the very long term.The supplier is gone, but the point is to use orthodontic elastic bands!!!!Just search ebay with "orthodontic bands".eg http://www.ebay.com/sch/i.html?_sacat=0&_nkw=orthodontic+bands&_frs=1 Quote Link to comment Share on other sites More sharing options...
940man Posted January 22, 2017 Report Share Posted January 22, 2017 On 17 September 2015 at 1:19 AM, sfbp said: Dead easy. Just make sure you don't leave the belt twisted if it ends up that way after you first put it on. If I recall correctly, this is roughly the sequence Hi sfbp, Your instructions were 100% OK and I was able to replace the belt with no problems using a special tool (the adapted paper clip). The only problem I had was when I re-assembled the player it didn't power up, it just remained on standby. Well I hummed and I hawed and pressed the power on button 100 times but the obstinate thing refused to power up. So once again I disassembled the player, jiggled the eject mechanism about a bit (think almost hitting with a hammer) and lo and behold it powered up and worked OK. I have a spare belt which should come in useful in about 10 to 15 years (if I'm still alive). I recently went into my attic a re-discovered a box of minidiscs about 500, mainly jazz albums, BBC Radio plays and other programmes. So a lot of listening ahead. So once again many thanks. Quote Link to comment Share on other sites More sharing options...
NGY Posted January 22, 2017 Report Share Posted January 22, 2017 2 hours ago, 940man said: ...the obstinate thing refused to power up. So once again I disassembled the player, jiggled the eject mechanism about a bit (think almost hitting with a hammer) and lo and behold it powered up and worked OK. You probably did not have the OP in proper parking position - see this discussion>> here <<. Just a few - unintentional - turns of the gears at the back of the drive during disassembling/reassembling can slightly move the OP out and open the microswitch. The MDM7 mechanism family seems to be sensitive to this. Quote Link to comment Share on other sites More sharing options...
mdenter Posted March 2, 2017 Report Share Posted March 2, 2017 FYI- I replaced the band in my MDS-JB940 over a year ago (actually closer to two years ago) with a actual "Rubber Band" that I got from a bag of rubber bands I bought at the dollar store. I use the deck every week to record a radio show and it is working fine. You don't have to worry about replacement sources just grab a rubber band. Quote Link to comment Share on other sites More sharing options...
Amater Posted January 22, 2018 Report Share Posted January 22, 2018 I have a lot of these machines all with the belts to replace. Rather than spend £5 a time on each one, and then more for stocking up for the future, I’d like to try buying a packet of the right sort of rubber bands (orthodontic?). What size are the actual belts new? (un-stretched / stretched?) Can anyone advise, please? Quote Link to comment Share on other sites More sharing options...
Amater Posted January 25, 2018 Report Share Posted January 25, 2018 Do you think this would be suitable? "3/8" inch Orthodontic Elastic Rubber Bands, 100 Pack, Natural, Heavy Force 4.5 oz, Small Rubberbands for making bows, Dreadlocks, Dreads, Doll.." From: https://www.amazon.com/Orthodontic-Elastic-Rubberbands-Dreadlocks-Horse/dp/B00OTA8K2C?th=1 Quote Link to comment Share on other sites More sharing options...
sfbp Posted January 26, 2018 Report Share Posted January 26, 2018 That's the largest commonly available size for orthodontic bands (I just went back to the links that I originally posted). However the use of them comes with no warranty or promises from me. I have NOT tried this... I purchased my replacements from someone who sold me the "correct" O-rings. YMMV, as they say, caveat emptor. I was hoping someone who'd actually done this might jump in and reassure you, but alas..... Note that such bands tend to vary a bit within the bag - you may want to sort through and pick out a good one (you've plenty of choice!). Quote Link to comment Share on other sites More sharing options...
Amater Posted January 28, 2018 Report Share Posted January 28, 2018 Thanks for your response. It may be worth buying the official belts if I could get them at a better price, which should be possible as I need a quantity. The best price I’ve seen currently is £5.99 each! Where did you get yours from and for how much? Quote However the use of them comes with no warranty or promises from me. I have NOT tried this... I purchased my replacements from someone who sold me the "correct" O-rings. YMMV, as they say, caveat emptor. I was hoping someone who'd actually done this might jump in and reassure you, but alas..... Are the originals O-rings or bands? Quote Link to comment Share on other sites More sharing options...
sfbp Posted January 28, 2018 Report Share Posted January 28, 2018 O-rings. It should not be that difficult to get approximately the right ones from machinery or auto parts supplier. Unfortunately I can't tell you how they are measured. Such things generally have peculiar methods to categorise their size Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.