Repair of Studer A-80 four track reel to reel

[@scottyotoole6125]

Found your video a couple years late but it's a great resource! I'm tasked with reviving not one but THREE Studer A-80 24 track machines at work. One of which has numerous channels with the same problems you show here. Thank you!!

[@bluearcturus13]

Hey biddmc, great restoration once again! Just short note on Studer/Revox machines: when I restore such circuits I also replace all of the teardrop shape Tantal capacitors. This is improving the sound quality very much. When testing these old Tantal capacitors, sometimes they still are within tolerance. But when measuring the distortion of the amplifier before and after replacment, there is a improvement in most of the cases. In the power supply circuits there are sometimes some PTC (thermistor) resistors for limiting the current during the time when the line voltage is switched on. A replacement of these with some fresh ones could also help to avoid problems. The Revox B790 turntable for example has 3 of these on the power supply print and the old PTC's can cause some funny problems. Otherwise the Studer/Revox/Nagra machines are very good and sturdy. Your videos always a pleasure to watch, keep on rockin'! Best regards from Switzerland, bluearcturus

[@torreslarry6837]

how Very Thoughtful of You blearcturus,, home address" Switzerland,,

[@yjwu5676]

In terms of “Z”-“theta” tantalum capacitor usually shows -89 degree,

[@yjwu5676]

I don’t know how tantalum capacitors ruin good sounding, any clue?

[@hifinphoto]

Astonishing. I wish you were my neighbour, SIR !

[@ericcagle8780]

Great video. I owned and operated an Ampex AG440B 1inch 8 track in the late 1980s and a. MCi JH 16 2 inch 24 track a few years later great sounding machines everything coming off tape sounded fantastic. Much better than the digital of the day getting ready to try out the new Allen and Heath SQ5 with the 24 bit 96k operating system! Rock on!

[@torreslarry6837]

a stellar Studer restoration,,, Thank You bigdmc1,,

[@robertotorin289]

pro tip: you can watch series on flixzone. Been using it for watching a lot of movies lately.

[@stephengideon5000]

@Roberto Torin yea, I have been using Flixzone for since december myself :D

[@bobjohnson1215]

How can I get in contact with you. I have an ML5 that I would like to get serviced?

[@bobsbits5357]

hi you need a test tape i did it with the fry on the wall till a had a test tape i have a otari mtr 12 1/2 did not have room for a model like this i keep it under my captain bed you see i do have alot of big reel to reel decks i fixed up my self can be a money pit got to be carefull when buying yes re cap cost a lot of time i changed over 10.000 in the past in uk soundcraft decks like the mini- 8 760 381-8 as well i have alot of them 6 plus

[@ColocasiaCorm]

Why he so rough with it

[@hifinphoto]

He's not.... he is Confident with them. They were Made to be handled confidently.

[@RobotPete]

Big DMC!!