I have seen a guy on E bay selling these rollers rubbers that are push on. Well if anyone had any sense they would know that these do not work right and that they are a complete waste of money but still on one of his listings there are 128 buyers. It is ridiculous to think that people are buying this junk and as soon as any good Technician sees this off it will go to Terry who does correct roller rubber replacement. These push on rubber people I consider crooks as it does not work. Here is one example-
Now it looks like there are three or 4 sellers on E bay- be warned that if you want the machine you have to work to specs DO NOT BUY THESE!
I am often asked what book do I read to tell me how to take this mechanism apart in order to fix it like a Technician?
The answer is there is no such book. Decks of different models are built in different ways and if you are an expert in Teac decks this does not make you an expert in Pioneer decks or Otari. They are all designed with a like need and function but using different parts and structures.
So a person asked me how to take a X1000R pinch roller linkage apart. I basically told him the basic steps. It does not mean that every detail is included in that small list of instructions. Where does all the detail come from then? It is a thing called experience. Experience and know-how is developed over time on a bench when you work on 20-50 decks of different types. Once you work on 100 to 200 you will have a higher confidence level than a beginner as you know something about the subject but not all. Then there is reliance on other Technicians. If I after 45 years come across a deck I have never worked on like a Revox or Technics, I contact one of the guys that work on them all the time. Leon or Marc will then tell me what they know and maybe some things they have come across that I might encounter. People contact me all the time about Teac and Tascam decks and I help them. To become proficient in tape deck repair as I tell people I am training or helping to start out, is that you take in everything you can and use those to sharpen your mind as to what you will need to repair decks. The issue is that if you take in some real junk then you will work through all the problems which could take a long time but when done you will have gone through the first course of deck repair and will have accomplished something. Even if the deck has Idlers and goofy design if you are able to make it work at least somewhat well you will have overcome many obstacles in that mechanism and then when you work on a better and more properly designed product then you will appreciate how well some things are made. At a later time you can define what you want to work on and then get away from junk like Akai decks that have no heads possible for replacements. This is why I don’t take them in anymore.
There is no magic wand to fix these- or what the magic wand actually is- is hard work and applying yourself to the task at hand and learn what you need to know as you make your journey from startup to seasoned Technician. No one starts out at the Admiral level you need to start out at seaman level first and make your way up the ladder to higher levels- ask questions and use logic in your decision as well as some common sense. Do NOT think that changing boards is the magic answer as most the time it results in further problems to solve rather than an easy fix. If you have questions I can answer some here.
With this mod, it is possible to get all speeds to within 2 Hz of the desired 3000Hz setting making the deck a truely correct speed running machine- No Question!
For a time now I have been fighting with some units speed wise where the forward direction is set a 3004Hz and then the reverse direction come in at 3035Hz. Well there is only one adjustment and it is wrong to place the forward speed at less than 3000Hz due to the human ear hears slower better than a faster speed. So I said one day a guy will figure out a mod to fix this- why does it always end up being me?
Well now a mod is designed that takes a signal off the reversing solenoid ground path to switch a relay so that when reverse mode is had the speed is adjustable to exact values by a 10 turn trimmers. In doing this you also need to provide the forward trimmers which are also improved from the single turn pots they used on the servo card. Now for both directions and speeds we have exact speed setting so that Musicians with perfect pitch do not have to suffer due to this design error.
I have to say that a few clients that had decks here requested that I include this mod in their unit and yes it is more work but when I adjust the speeds in each direction and you can get the speed ever so close to the exact speed it should be- those 10 turn trimmers are a pleasure to work with.
Every once in a while there is a gifted person out there that takes it upon himself to help us Technicians and DIY hobbyist to fix their decks by making available parts that are very hard to find. This Fellow I talk about here is Marian. He has a web site that has many great products and if you are working on a tape deck, you are best advised to at least look around his site to see if he has a part you are looking for. I have purchased from him for the Sony WM-D6C and it is great to get parts that are just what we need.
I highly recommend you go check out this resource of parts- https://fixyouraudio.com/
BELTS- Do you know the size? This is where Technician get their belts from.
I have to say that after all these years you would think I could catch up but since 2010 when getting into this repair business full time or more, I have only gotten a larger and larger back log. It is time to add to staff even if I have to train you. Having some Electronics training in the past is a plus but is not absolutely necessary. Some Mechanical skill is also a plus and the ability to lift 80 pound units- not all are that size but some are.
I am not hiring employees but as I have done with other trainees, the training is done which then allows you to work on your own if you don’t want to work with me. I can tell you as I have with others how to make your own business out of this venture. A space to set up a bench at your location will be needed and then the investment in some equipment and test tapes if you do not have them. We work mostly on Open Reel and Cassette decks here. Occasionally other stuff. The investment can be $1200-$1500. That is not money paid to me but in buying alignment tapes and test equipment like a scope, AC Millivolt meter and a Wow and Flutter meter. Some investment in a parts cabinets and capacitor stock. There is terrific demand for this now and it is growing- I need driven and consistent people to help me in this massive back log I have here. The pay can be from $80 to $100/Hr for those who are at the ready level- the training and learning does not stop but goes on as we see new things. I am still learning after 45 years in this business. Contact me at firstname.lastname@example.org or call me at 708-334-2260 if you want to get started. The best way to train is in person one on one. I am in the Chicago area SW or O’Hare Airport.
I can now say without worry that Gerhard in Florida joins me in the fight against broken decks. He has customers calling me and thanking me for referring the work to him as he does a remarkable job. In my many conversations with him I know he is no dummy. I suggest to many people who need work done in Florida and surrounding states to contact him. I can not do it all here in Chicago area especially now that Lightfoot has the city in turmoil with her (of is it it’s ) lack of proper management.
Vintage Stereo Repair and Restoration
Repairing and restoring analog audio components
Teac, NAD, dbx, Revox, B&O, Pioneer
Those looking for service have to be real careful- why? There are those out there to rip you off good. A client sent me a deck in from a TAP repair place. They told him the unit needed $800 of repair. So what was wrong with the unit? Well the client was trying to use a 240V 50Hz unit in the USA with 120Vac and 60Hz power. Other than that if you applied 240 Vac to the unit everything worked in it. This is the kind of incompetent service you can find out there and they never even mentioned to him it is a 240Vac unit because they probably did not even know this. Can you believe some of this crap?
A question I get from many DIY repair people. I don’t hide my findings and advise people to the best products I have found. One of them is this AMS oil product that is outstanding. If you use WD40 or a low grade oil then don’t blame me for bad performance as I have told you what is best. It gives specs better than the new deck specs. .02%wrms JIS was measured on a A2000R the first time I used it and that is a model previous to the A2300S. I now use AMS oil exclusively on my shop benches as it is the best!
I keep on getting people referring to U tube instruction videos. Most all of them are wrong in some way or another. The other thing is they jump over 90% of the work that needs to be done, use the wrong terms and are just totally incompetent on a Bench. Teac would never hire them. Things to watch out for- Sine wave comes from a I Phone- no real Technician would ever use this piece of junk. They have real equipment. They use a DVM to measure audio signals- This is totally wrong item to use for this and is inaccurate. They put oil where grease goes and grease where oil goes. They can not even determine the need in what they are working on. They take face plates off decks when it is totally unnecessary. Why take all this off possibly damaging parts when the real Technicians never do? You are better off calling me or Russ Bachmann in NJ to find out how to do something- NOT all technicians are so free with their advice as they are too busy. If I have 200 units sitting here waiting to be worked on what makes me want to sit and talk to a hobby person to fix his deck. Sometimes I do but there is a limit to how much I can help as some of this requires one on one training- there is no other way. I am working with some people now to expand the possible person to send units to. Gerhard is in FL and he is doing rather well with all the equipment I refer to him. Dean in Canada is overcoming his problems with cassette decks, Mike in MN is setting up his bench and getting ready to do some work. Find a correct Technician and save money as all these local shops are only there to charge you a fee without doing any real work! I have seen it done here in Chicago.
These detailed items are for those who are technically capable of understanding them and implementing them. The reason is that it is a way to share what is determined, designed or found to need correction on the various models noted. It will allow a technician who works on tape decks to benefit from my observations and design mods to make their repairs better or more accurate.
Do not hesitate to contribute if you have a proven and tested design mod.
For those that are not informed and have no way to measure wow and flutter as well as phase shift with a scope, I am posting this so that you DO NOT waste your money on this garbage.
I finally tested a set here and had to wonder what was the problem with the freshly oiled and belted deck and it was the Pinch Rollers. These Pinch roller push ons are a bad attempt to make a product but if they did any testing they would find that they exhibit cyclic wow and flutter rising to .14% and that they are not very precise in that the azimuth sine wave shifts consistently at least 90 degrees each way. This is ridiculous that these are still being sold. I looked on Amazon and there are two 5 star rating reviews.
In putting on another pair of old rollers I had here the wow and flutter went down to .040% wrms and stayed there.
This is another rip off product to be sold to those that do not know better- my results have been confirmed by two other Technicians.
Also be aware that this same idea is being sold for Tascam cassette decks and the more expensive Open reels. No matter what the product is, the push on rubber is crap and you will NOT get good service from it. The only way to fix a Pinch Roller is to send it to Terry Witt in Sparta Michigan. This is what the professionals do. Don’t let these numbskull’s take advantage of you!
I have been working on units a log time and some of the time I get requests for help that I do not have manuals for so over to Hi Fi Engine I went. Most of the time I was able to help the other guy for no cost. Well most recently I was working on a Sony 854-4 where I got the manual from Hi Fi Engine. The schematic is so bad that you can not see what the part numbers are- what idiot scans stuff like this and what further idiot puts in on a site for some poor person to download and try to work with.
Well I made a comment to them about the poor quality and now I am done with their poor scans and idiotic behavior. Why don’t they come up to standards rather then kick people out from downloading their garbage.
No matter, I am not going there anymore and do not suggest to anyone that you do either. If I can not fix a product with all my experience and their blurry manuals what makes you think that a person just starting is going to be able to.
Get all you manuals in paper from Stereomanuals.com
This place will get you a good and clear product. http://www.stereomanuals.com/index.htm
Hi FI Engine Quality-JUNK!