2many
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Everything posted by 2many
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I am at a loss to tell anyone how to properly read my own tool. It's something I own, but did not buy or ever use. I am a poor soul in need of belts. I have two pictures I will send. One is measuring a 1/4" shaft, the other an 1/8th" shaft.
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Just at sight, they are quite large for the groove, but the size of the rubber bands I am using are that thick too and they work like a charm. I have enough experience trying several different 17mm belts out of my shipment from the UK on several machines to say that no combination of those would work for me. Could not even begin to load a disc. You can see that they are smaller in diameter than the original... by far.
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Ha, is that an imperial micrometer? I thought it was in thousandths of inch. The sony belt does measure at 1.5 square.
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I currently have 6 decks in need of belts. Yes $13 us dollars is robbery. My pictures may indeed show that the original is approximately 1.5 x 1.5..... But I do not know how to read the gauge. And my whole life I have worked in inches. milometers and kilometers... what is that? I'd have to resort to a conversion chart. The original belts are square, yes and approximately 11/16ths inch in diameter.
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Do any of these photos help?
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That link that Kris01 posted, my computer translated the language. It is EET europarts sony loading belt product number 499953701 ean upc 5705965918319 they do not give specs. The belt is round, that’s a start. It says the price is 47.43 pln (with VAT) what is that?
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Afaid I am not very technically inclined regarding a micrometer. Nor do I have the tools. Yet I will give it a go right now and then post. Stand by.
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All four are old belts In the picture, the three are original e12 belts and the one is original 940 belt. And yes, all four seem to be identical belts. They are as marked on the paper. Only the big belt is a new belt. It is thicker and larger diameter and WAY too big. The big belt is one of six I purchased from global electronic solutions. It was listed as for the mds jb940. (Among other machines) Yet obviously that belt is wrong. My god how hard can this be to get a tiny little belt? Several posts back, Kris01 posted a link which I would have to translate. Below the link is 33mm x 1.5 x 1.5 is that the belt I need?
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Global electronic solutions belt is the big one in this picture. $45 for 6 rubber bands. Now I try to get my money back.
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Thank you kgallen I like the way your cross reference chart is shaping up! I was hedging my bets as to whether the same belt for the 940 would be prooer for my e-12’s. Thus purchsed from two different suppliers. I will be curious how they match up wigh each other. sfbp, I now am convinced that I have a belt issue. And thanks for your help trouble shooting.
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That is great. Thank you for steering me in that direction.
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Op type? A/B/C... Over my head. I am new to the internals and the terminology. But I will add one other thing that would help me as I go along in md life. At one point, I decided a sony e-12 service manual would be a plus in my world. Searches came up empty. Hard to get a copy of them?
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It is hit and miss with any info you may garner from an ebay ad. In post #1 of this thread, web spare parts lists a model specific belt for the mds e-12. With them, no other models were mentioned. Global electronic solutions lists the belt for the jb940 and two others, but leaves off the fact that this should very well fit the e10’s and 12’s. Should fit many others too! I am new to the deck internals. Have not had troubles until now. A list of all decks using the mdm7 transport would have been of help to me as I scrolled through 5,000+ listings to try to find what they had available. So for the benefit of the md community I will post my observation and experiance. What is the name of the transport inside the jb930? What other home deck transports are there? You and me... don’t understand why the 17/1 did not work for me! For the record, I tried a number of them, in and out, along with going back to the original stretched belt and using rubber bands. This being done to two different e-12’s. With identical results. I do not think I failed to install them right... it is too easy and you can see it is in place. Result, 17mm band does not work. I will say they are visually smaller in diameter, thicker than original sony and lack the expandability of a rubber band similarly sized to the 17mm.
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Kevin. I agree with all you are saying. I wonder how and where belts are measured in the industry. I do not know how to call out specifics to a wholesale belt supplyer. Regarding my experiance and observation with the UK 17mm belt, my gut feeling is that an 18mm belt may do the trick. As far as mm’s and judging the ebay ad, they are referencing the geneal outside diameter. And right, in my case, with the 17mm installed, there is something going on at the very beginning of insertion and engaugement. A sony spec would be a blessing. No one has time for our little belt issue. Did they test different belts in all machines? No, impossable. In a perfect world, going to a belt supplier and rifling through and testing their various product would be nice. In the end, the reason for creating this post is to try to come up with a general consensus, clarify terminology, create cross references and clear up the darkness regarding this issue. For me and hopefuly for others. When I get these new belt shipments in hand. I will compare, test and report my findings.
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I am lost in the nature of your question. In what it is in reference to.
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It would be nice if the minidisc community portal had a cross reference chart of some kind for interchangeable parts. Or even a thread as a go to place for this type of thing. Or am I just missing this? I have been going round and round to find proper belts for my units. On suggestion I bought 7 belts off ebay that did not work for me. I think they were a bit too small so that when installed they put the pulley on a bind. They were listed as 17mm, but no other description is given. I found rubber bands that work, but their longevity is suspect. A data base stating which minidisc carrage is used in each unit would be of help when searching for a belt. For instance in searching ebay I found a belt for the je 440 and 480 and the only description is that it is a gesco 2.2 square belt. In searching for belts to fit a 940 I found a listing and those are gem3.5 by gesco I believe. What do those numbers refer to for the home repair guy? If I were to find some wholesale belt place how do I know what I need? I found a listing for the mds e-12 but they give no description at all. Diamentions of the belts would be a plus. These things might be worth a dollar...or pennies? But they charge like it is the last belt on earth and they are keeping it a secret. I just bought the last two designated for the mds e-12 and now the seller, (in portugal) has updated their listing to show two more are available! I would have bought three! There are 50+ belt packs you can buy, but that would be a crap shoot. And by the picture, there is nothing in there small enough. They state that the range begins at 40mm. Global electronics and web spare parts both have over 5,000 belts listed for everything from a kraco in dash cassette to a norelco shaver. They have no searchable database and use a generic picture for the belts. The listings are a jumble of all belts and model numbers in a mixed order. Very difficult to navigate and expensive. At least I have purchased from them before and got the right pack of four belts for a double cassette deck. Anyway, my post here might be of some help to others. I am no electronics repairman, but I fix things. Who can afford service when you have a hundred components? I have been on the phone, I have gone around town, repair men are retiring and the small parts shop is gone. I found one guy who gave me a couple wrong size belts. N/C (thankfully) So I have just purchased 6 jb940 belts and 2 mds e12 belts on line. I was curious, I have not had to take any minidiscs apart until recent. So I looked in some. I have an e10 but have not looked in there. (so I wonder about it) The 940 and a e12 are very similar. The same belt should work in each. A jb930 is a different animal. The load tray is gear driven! I would suspect my 920 is as well. No disc errors and c-13's are going to happen there, unless you jam it and bust a gear. Check my pictures below. The e-12 has a metal cover over the transport (for some reason). The 940's cage has a place for that cover and screw holes for it, but no cover. The 940 has two ground wires the e-12 does not have. And you will be able to pick out the 930 due to it's nice white transport tray GEARS! mds e-12 with it's metal lid mds jb940 has no lid mds jb930 a whole different transport I'll show you the pictures from the top too... Global electronics solutions has a listing which includes the jb940. A gesco 2.2 square belt Seller : amecbol Item location: Woodside, New York, United States Sony HCD-MD595 Sony HCD-VZ50MD Sony HCD-ZX50MD/MDS-JB940 GES2.2 SQUARE BELT ebay item # 123028753051 $6.95 shipping $290 Seller : web_spare_parts Item location: Europe, Portugal Sony MDS-E12, MDSE12 Belt Kit For MiniDisc (1 Belt) ebay item # 232891402025 $8.97 shipping $399 Above, I bought...we will see. Below, did not work in my e-12 Seller : cnh_03 Item location: Raithby by Spilsby, United Kingdom 17mm Rubber Drive Belt for Cassette Deck/Player, CD ROM, DVD Player etc ebay item # 192420535089 $1.23 shipping $2.42
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I can not see why the disc is binding during the “initially begining to insert” stage. Left front corner of disc hangs up in what I suspect is the small guidance grooves. I currently have “ask the seller a question” remarks concerning an ebay belt called a gem 3.5 square belt reportedly for e-10 and e-12 units as well as the jb980. seller has not responded to my queries yet. Belt $6.95 and shipping $2.95 !!! the belts look good in the picture for what that is worth. Here is that ebay item # 113810440574 The belt is extremely easy to replace as far as I am concerned. It is just the pita of pulling the unit from my rigs and extracting the transport to do it. I will buy belts if I find proper ones. For now I can run with what is in there. Here is my rig. There are two set up this way. Power conditioner, dbx 386 compressor/pre amp utilizing on board digital converter and direct digital hook up to the mds e-12 for a high dynamic recording. A pair of oktava mk319 mics round out my set up. So this way I pick up a super nice signal in the pre amp that is Sent to the digital imput on the e12 I use the rigs for any high end recordings I need to get, capturing the slightest ambient sounds or handling the blasting output of a band’s pa system. This in a true realistic uncolored form. Then I do my editing with a host of other machines.
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I can not quite figure the binding either. The rubber band is just about as thick as the new belts, but they do stretch easier. And yes, plenty of room on the wheels. All I know is that I tried the new 17mm belts over and over on two different decks. Same failure and binding.
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Thank you all for helping. And to really thank ya, here is a link to a brand new e-12 on ebay for $400 out of modesto ca. Ebay item 143234653630. Better hurry! used ones are going for $462
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Well, I don’t know what to tell you guys, but I sure don’t like buttoning these up with a rubber band as a belt. here is what I am talking about; The 17 mm belts from the uk I bought don’t work. In fact the deck hates them! Upon initial insertion of the disc you feel interferance. You can not get the transport to operate even with assistance. But even shoving the disc in part way kind of gives you a stuck in there feeling. The left leading edge of the disc is being grabbed and held onto by the initial load parts and it is hard to even free it from this grip. tried new belts on the was working unit and the was always not working from day one unit. No luck. Old belts and manipulation. I can get things to go barely. Redy to give up and think of electronics repair shops who know little of mini disc, I decided to try rubber bands from one of those thrift store multi size band bags for a buck. That works. And that is the bad deck that has never worked! See the video below. Problem is, there were only two bands in the bag that were right size. So I still have to source more. I would still be looking for any thoughts anyone has about my deck failures. Kgallon, yes, i did get a replacement sent from a seller after the one he sent had this problem. No I do not want to sell one. My e-10 works fine after all this time sleeping! I have 3 jb940’s that currently will not eject yet all my jb930’s are fine. And my oldest one, a 920 subjected to the elements in the garage works fine. Oh, I did not mention yet that my tc-835s dual cassette is holding on to two cassettes in the drawers and will not play or eject. I bought a belt for it long ago but as yet have not dove in to it. Any one know any tricks for the sony. tc-835s? 794F4EA8-DEB4-4155-9A7A-4C4BF6EBBE68.MOV
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I have a few more pictures and thoughts. Pictures of the tray dropped down (up front) white parts in rear with no disc and with disc loaded. Although there are two different white pieces that go in and out I am thinking now the one with the gear teeth has more to do with it all. It has a spring on it. Pushed on it lightly while the machine was trying to eject, and it went into proper action. Disc ejects as normal. with these new belts on things have to be forced to partly insert. Yet not wanting damage, I did not use too much. I never got it to do its thing with a new belt. Things don’t feel right with a new belt. And the small follower up top in the front right does not travel its slot well. Disc feels stuck in there even when it is “mostly” ejected. Works fine with a nudge and the old belts. Travels, drops down, reads and plays.
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Ok, went at it today. Still having trouble. I bought a number of those 17mm belts from UK. With a new belt in place it is worse. Tried two out of three e-12’s so far, seeming ly same results. As stated previously, I could help things go into full load position and all was good.(but we cant have the lid off and nudge things in everyday use) With a new belt (these are thicker) it really does not operate at all. Normal operation is that the disc gets drawn in through the faceplate at the very beginning of entry and proceeds all the way in at which time the tray also drops down a bit. This coincides with the white sliding bar and gear driven pieces extending to the back of the transport during loading. And their returning to unextended position when the disc is extended. The belts are easily replaced through the mouth with out even removing the spring or lifting any white “lever” as I was advised. I placed the original belt back into my know previously good unit and I am back to square one. IE, the disc is drawn in part way but the white plastic parts in the rear do not travel like they should. So the tray does not drop down, I get a read error and it tries to eject. It does not do eject either with out a little nudge. (that is if you had manipulated it into position where it should finally rest for toc and play... I am goind to load some pics and video. Pointing out the white bars and back of tray that wont drop down. Video of it trying to eject and load.(caught in limbo between load and eject but not getting full travel) And video of my working e-10 easy load and eject. Of course, you all know how these work as normal. All help is appreciated! 13369428-1E1B-401C-8D67-C88195992CB8.MOV 5153D917-4D05-4FD0-9CAF-829B54D0322E.MOV
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Ok, you guys are getting me convinced. A belt can “look” good on there and be stretched beyond specs. So is it 17mm size belt that I am looking for? I found the link to the ebay seller in the UK. As far as those instructions go on replacement, I have seen the spring on the left that needs to be disengaged, but I am unclear about what/where the vertical tensioner is. Can anyone point that out closer? I am not sure I found the RIGHT video showing how to replace the belt. Never heard russian... link? Regardless, replacement belts are 17mm???? After 3 e12’s I imagine I will have to take care of some jb940’s. So thanks to the kind folks here for setting me straight on this. 2many
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SFBP, You would know what is wrong better than I. This I know because I did read on this site what I could find prior to registering and posting. And I did see your comments, and the rubber bands. And... I suspected the belts on those three e-12’s. But I swear, they look fine! Theroretically a belt loose enough to get slack when if is really needed could very well be the problem. The systems work and travel part way without any assistance. While I would consider bands over belts if there is no alternative, I feel like you have to hit me with a hammer to make it sink in that my belts must be slack beyond proper operation. And so I ask for more proof.
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About the above topic. 2 rack mount e12’s had sat idle for 5 years. Now they fail to load and eject properly. So I got out the 3rd one which has been boxed 15 years and tried it too. It had a failure when I bought it and an ebay seller sent me another to replace it. I kept that third one for parts, but never had it out again until now. And I got it to work and play too by nudging the tray a bit while loading or ejecting. (though it is a little noisier) I will show you some pics...shows the tray in and out as well as the white sliding piece I was helping go. The tray belts all look fine. My two good ones were working fine last time they were used. And now, I even coaxed the parts unit that had toc error to work