Well I was contacted some time ago by a person wishing to learn tape deck repair. Well he is doing that and moving right along to a top level Technician.
But there is another aspect of this person which has not been explored- He repairs the dBx units that other guys can’t because as some of you might know all the documents such as service manuals have been burned up. Well you get a guy who is smart enough and that will not stop him. He has already been fixing units sent to him from Greece so he is already pretty well known but I want to be sure that everyone else knows about this. The guy is Gerhard in Florida. Just to make it easy here is his signature-
Vintage Stereo Repair and Restoration Repairing and restoring analog audio components Teac, NAD, dbx, Revox, B&O, Pioneer Gerhard@TheVintageAudio.com 772-713-1506
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.
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.
I have an over abundance of Silver Maple trees that have started growing in the yard. I have potted a lot of them to allow them to be planted elsewhere. Boy Scouts, Rotary clubs, clubs of all kinds that want to plant trees to help preserve nature. Well I got the trees here. $3.00 to individuals but clubs I can work out a deal.
I am in Bensenville IL 60106- near the SW corner of O’Hare Airport. 708-334-2260 come and get some. I don’t want them to die.
I am amazed that a lot of the clients I talk to do not or have not ever heard of Dr. Steven Greer. He is trying to bring out the truth that the Government and the Military have been trying to hide all these years from the 40’s. There are so many people that watch the sheeple news media that are really full of crap that is about garbage that does not matter. I don’t waste my time on that stuff. Anyway a new movie is about to come out that furthers the education of the public on the connection possible to those that have been here for years but have known we were not ready yet. People who are informed will know something about this.
There are sites that are now offering MRL and Teac tapes that use their name but in reality they are duplicating their own signals on tape from who knows what kind of machines. This is one example-https://www.ebay.com/itm/BRAND-NEW-1-4-7-5-in-s-MRL-Four-Frequency-Calibration-Tape/392363532341?hash=item5b5ab06035:g:XaEAAOSwUPxdQc2f
These are fake and also not accurate and basically they are rip off artist that use reputable names to sell their garbage. Since when does Teac operate an alignment tape facility in Germany? It is all junk waiting to steal your money. Get MRL tape from good dealers like JRF Magnetics or MRL themselves and don’t buy the 4 tone cheaped out tape as this will not be as good as the real thing. I have been using MRL tapes from the late 80’s.
I know I can be negative at times but when I find a supplier that goes beyond the call of duty I mention that too.
That is Stereomanuals.com
Well the deed has been done. If you need a Tascam 58OB manual contact Rick at Stereomanuals.com as I just got my two copies and they are outstanding in quality and clarity.
Every page straight and without marks you get from other places plus you can read all the boards and schematics.
This is the only place to get correct and well made manuals. http://www.stereomanuals.com/man/rep/tascam/index.htm
I am in communication with certain people who are often E bay sellers and sellers of Reel Decks on other sites. One guy told me that 99% of reel to reel users do not know the machine they are buying is bad and so that gives him the go ahead to not adjust them correctly. Another guy who I asked what do you check the speed with as in test tape and measuring device? He answered it sounds good to me!
People are buying decks at higher prices and getting equipment with the most minimum of service done to them as well as them being off speed and who knows what they calibrate them to. All these people would be classified as Hacks by the good Technicians that exist out there. These are the Knuckleheads that you are being ripped off by as the decks are not even close to correct. I am writing this to make you aware of this prevailing mindset in the used equipment sales of Reel to Reel and Cassette decks. I never knew it was this bad and I do not intend to overlook the stuff I see. You can also tell how well the machine is worked on by asking what length warranty they have if any.
For those who own this machine there is a weak part in it called S301 which is the solenoid ALPs direction switch. Once this starts to go bad you can try and spray it with Deoxit but that might not even work given the tiny and poorly made switch design. The correct answer is to put a properly designed switch in by Kurt Jacobs which is sold on E bay. This fellow has done some homework and has made a correctly made part that should have been put in the deck of this price in the first place. Ebay Item# 153025190388
I, as a past Teac Lead Technician recommend this part!
If you watch this and think you need to pay $120 for this board, it is just another example of a person ready to rip you off when none of that is needed. If the left (Supply) reel table turns when you are suppose to be playing a tape in the forward direction on a Tascam 122 Mk III or 112 MkII, but this reel has drive to the left, it is because through handling the deck you have sent a signal to the controller that said to go to reverse mode. The deck uses the same IC as is in the 112R Mk II so there is a reverse mode in it.
How to fix it without $120 of fancy circuits that are not needed? A dB25 connector and a tact switch or even a set of wires that you can short together. Me in the business built a dB25 with tact switch- you only use it to get the deck in the right mode again and then disconnect it and you won’t need it again. What he is doing with all those ICs I have no idea. With the dB25 which fit the remote connector on the rear of the deck is connect pin 24- Ground to Pin 1- Play mode. The deck goes into play with this one push the correct direction. Now disconnect the remote connector and the deck will work correctly after that- I know as I have done it. I service these all the time. dB25 are pretty cheap and most Technicians and Broadcast Engineers have them sitting around like I did. Don’t be tricked into $120 rip off.