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To think that a Hi FI VCR is the same as a 1/2 track reel to reel is nonsense. Now I worked for Tascam and run my own repair company to repair these but then I have worked for a Sony Authorized service company as well as both Sony service facility near Chicago plus I was a Engineer for VCA...

If you have a stereo recorder then why not a stereo amp with two speakers. I don't know where shieiking comes in but you have to make sure you do not have a feedback loop with open mics around an amp output. When playing back turn the mic function off. I am not too sure what LH combining is...

A DVR-22 was one of Sony Broadcast level D2 units. It was a model above this DVR-20:

Imagine that. There are lots of people that say the right reel motor is not working on Otari MX5050 and I tell them and take the Edit switch off and that fixes it in a lot of cases.

On the Preamp PCB there is usually a test point to look at the pattern off the heads. If one side is missing then you either have a clog or a broken head. Lacquer thinner or anything that would upset the enamel wire coating is not the stuff to use. Denatured is safe as I have used it for many...

Video heads and DAT too can be cleaned with a business card back with denatured solvent on it. The drum is rotated around with not a lot of pressure applied. If you have a head that presents the feeling that it is a snag then it might already be broken. Changing heads is more than just screwing...

Dat machines are nothing more that small VCR type decks. The Helical scan heads are very sensitive to pressure. The item we used at VCA Teletronix where we did 8 hours a day VCR cleaning and other repairs we use Text Wipes. The chemical we used was called Fedron and I think it was too strong but...

This continues to be a very common problem with these decks as I worked on two in the last two days. The Gear C which is made up of no different material than the others seems to get more discolored and becomes more fragile maybe due to mechanical stress. I had one the other day that not only...

If a channel sound thin them maybe the bias is not what it should be. The bottom of the head looks like more wear than the top in center photo.

Maybe you need to go direct to the Tascam Forum to find him there. I sent him an E mail but I don't know if he has the time to answer. We will see.

wkrbee would know as that is his specialty as well as being the Manager of Teac Service in Montebello before they blew that up.

Hi Dave, There are people on E bay selling molded gears for cheaper. Mine are resin cast the same way they made the original only with a better resin. They are $30 each and the shipping of one I just sent to the UK was $18.45 the lowest price. There are people also 3D printing gears- I never...

It all depends on the noise reduction used. If none was used the 234 would play back a 3.75 IPS 4 track tape and maybe any pf the higher speed Porta studio unit that are 4 track. The dBx noise reduction would just complicate things. the 244 can probably be fixed cheaper than buying a restored...

Yes, This is a condition that the mechanism controller is in error mode and the most likely cause is the dried up grease they used has caused the old Gear C to break teeth or crack. This is a very common issue and one I have resolved many time. Do not just put a new gear in as the real cause is...

Well this is an old thread but still people can learn from this answer as it does not expire. First all professionals use a made for audio dB meter like a Leader LMV181A or even higher models. Next you have to select a correct test tape not the one used for super expensive Studer machines as...

Motor wise a too hard to turn belt situation is the cause but if the motor is all carboned up the commutator might be shunting current away from the fields. I have taken motors apart many times to inspect brush life and to put AMSoil in the end bearing. The black carbon dust is blown out and the...

Ebay usually has the wrong part that they sell you. They are usually idiots there as they are deceptive in selling equipment there also. Now to the correct procedure- Firts you are best off consulting the PRB cross reference for belt size and type. I suspect it is around a 14.5" belt although I...

The meters are driven by op amps that are NJM4560 and then go into diodes and capacitors for smoothing of the signal- Meters only display one polarity DC signals that represent the AC level. Looking at the schematic I have on the computer you problem can be a Tape/ Program switch or even before...

No I will not use Lead free until the lead stuff is not made anymore. I put a radio station together almost by myself and they provided lead free solder and it was nasty to work with. The 1/8" connectors that we buy melt with the temperatures that stuff requires so it is more difficult to use or...

The dBx cards on most tape deck should only be adjusted for Nominal encode or decode levels. The rest of the pots will just send you into trouble with a lot more specialized equipment needed. At Teac we only saw the special generator one time and we had to send it back. To build one does not...