FULL ELECTRONIC CAPACITOR / ELECTRONIC SERVICE KIT for STUDER B67 Mk1 and Mk2 PROFESSIONAL RECORDER
FULL Capacitor and Electronic Service Kit for Studer A67 and B67 mk 1 & 2
Includes PSU, Tape Transport & Control and Suppression Capacitor and mains filter overhaul kit and all audio cards including sync but not time code (very rare).
Don’t waste your time replacing just one or two capacitors on machines that are now 25 - 40 years old, replace ALL the troublesome electrolytics, tantalums and suppression capacitors. Usually the old high voltage capacitors associated with the motors and tape drive will also be shot electrically and often even visually. Some capacitors may test ok on a low voltage modern tester, however capacitors usually need to be tested after they have operated for at least 10 hours (after being discharged and stored for many years) at working voltage and then tested under actual working voltage conditions. Modern testers cant do this. For such relatively low cost components its prudent to just replace the lot. PLEASE NOTE: If you have a 30"/sec machine, please tell me at time of purchase as the capstan motor takes a different capacitor to the more common standard 15"/sec machine.
This kit contains parts for all boards and is highly recommended
- Replacement capacitors for all the electrolytics including large PSU can type caps
- Replacement for all tantalum capacitors
- Brand new specially manufactured non polarised motor capacitors
- All troublesome paper capacitors on drive control, switching and mains suppression
- Fully enclosed cermet type preset potentiometers
- New mains filter module
- All audio boards and meter panel included
This kit caters for the following circuit boards:
- Power Supply
- Stabiliser card
- Tape Drive Control using TCA561 IC's as well as the later version using discrete IC's - indeed ANY tape transport card fitted!
- Tape Tension Sensor Boards - both sides.
- Mains Filter module - we have a new ones made specially for us to the same specification
- Capstan Speed Control using TCA561 IC's as well as the later version using discrete IC's - indeed ANY capstan card fitted!
- Motor Control boards for each motor - three boards catered for
- Digital counter (for counter system)
- All motor chassis mounted motor capacitors - 5
- Record including various improved replacement resistors and capacitors associated with the erase / record circuitry that overheat and give problems
- Playback
- Oscillator
- Overload detector
- Meter panel and monitor - includes multi-turn trimmers update
- Mono stereo switch
- A comprehensive set of Nagravox service sheets / manual is provided to assist you with your overhaul.
- Factory updates
TOTALS:
- Capacitors = 201
- Preset trimmers = 11 (3x multiturn precision for meter panel adjust)
- Misc modules and mounting hardware = 9
- Small “upgrade” blank labels are provided to mark your upgraded boards
The kit contains specially sourced, new, freshly manufactured components from reliable manufacturers whom we have been dealing with for many years. (my capacitor manufacturer going on 10 years now!). DEFINITELY NO NOS (new old stock) or 2nd hand items!! The motor capacitors are specially manufactured for us for Revox and Studer tape deck motors - not generic white washing machine capacitors as some vendors try to palm off. The audio signal path capacitors are specially selected low noise, low leakage / high stability types and far better that the original electrolytics and tantalums. Suppression capacitors are all X2 270 VAC rated and UL certified - far superior to what was originally installed. The preset pots are cermet and fully enclosed guaranteeing decades of trouble free operation and adjustment.
Service sheet instructions, hints and suggestions for each board are made available to you which include many "monkey see monkey do" pictures detailing exactly which components go where, component replacement lists and a host of useful tips, checks, amendments and basic calibration.
What about the audio cards? See our other listings (coming soon or ask) as we have kits specifically for groups or individual cards. We do this because the B67 could be configured in different ways - mono / stereo, metering / no metering, sync, pilot tone etc.
NAGRAVOX specialises in Revox, Studer & Nagra tape recorder overhaul and upgrade kits and parts. Electronic parts, kits, mechanical components, tools / test gear.
NAGRAVOX KITS and SERVICES – Important Information.
Some pictures to give you an idea of whats involved This is for an A77.
Overhauled and Repaired in our Workshop.
Please Note: Pictures in gallery and description show various aspects of tape recorder restoration using Nagravox kits typical of our service sheets and what we encounter in our workshop. These are for elaboration / information only and are not what is supplied in our kit of parts which is detailed as a picture of components when you select the model.
GENERAL INFORMATION ON OUR KITS
Our kits contain specially sourced, new, freshly manufactured components from reliable manufacturers whom we have been dealing with for many years. No NOS (new old stock) or 2nd hand items!! The motor capacitors are specially manufactured for us for Revox tape deck motors as are large power supply can type electrolytics. The audio signal path capacitors are specially selected low noise, low leakage / high stability types that we have specifically tested and sourced to be the most appropriate available. The preset pots are cermet fully enclosed guaranteeing decades of trouble free operation and adjustment.
What About - other audio path caps and transistors - I try to design kits on the basis of what is most likely to be degraded without going over the top. We don't usually supply audio path related non polarised path paper, mica, poly or other caps <1uf simply because in our experience these are very stable, always fine and within spec. We also don't supply any transistors or IC's (other than in teh Full Monty kits) because again these are usually fine. Very seldom are transistors a problem! However we do have a separate transistor and diode kit suitable for A77, B77, PR99 and other Revox and Studer machines for the 60’s and 70’s. If you restore a few projects then they are a "good" thing to have a few in your parts bin just in case. If you want to replace transistors, we can certainly supply (if you want authenticity) original spec or (if you are a sonic purist) modern very low noise high gain equivalents we have tested extensively. Just let me know when you order a kit and we can include them at a nominal cost.
MOTOR CAPACITORS: Our precision high grade motor capacitors are specially made to our specifications for us for Revox and Studer tape decks. There are NOT generic white washing machine / fan capacitors which have wide specification tolerances. Don’t be fooled into buying white plastic generic washing machine or fan capacitors - they are mass produced to wide specification tolerances, inaccurate and - frankly good for fans and washing machines BUT not precision tape recorders. Especially don't believe anyone who tells you that a different higher capacitance is better! What absolute rubbish! Our motor capacitors are the exact Revox capacitance values not "approximately close". Anyone who implies that a higher capacitance value is better is talking nonsense. Other Ebay vendors have in the last year started copying us and offer copy cat kits many with inferior white washing machine capacitors and dubious non X2 rated suppression capacitors. Also PLEASE never use old motor caps - its just not on and is a rip-off! Our motor capacitors ensure the capstan and reel motors develop the correct starting and running torque necessary for smooth tape transport under a variety of tape tensions. If you have wow and flutter or sluggish FFWD or RWD then your motor capacitors could be the problem.
Our suppressor capacitors far exceed the original specifications and are X2 rated to 275VAC. Don’t accept anything less! Some vendors try selling cheaper DC rated capacitors which are not correct and wont last. Did you know an AC rated X2 capacitor at 275VAC have an equivalent DC rating exceeding 800 VDC. Cheaper inferior 400VDC and 600VDC capacitors just wont do the job because they are not AC continuously rated and you will be sorry. In defense of the original Rifa and other makes of suppressor capacitors fitted by Studer / Revox to most of their machines which have often been referred to as “little smokers” (a coined WWW term I really loathe!). These at the time were the best available. The have done what they have supposed to do – suppress surges and spikes due to inductive / capacitive switching – and are simply old and passed their normal age and service duty period. They have never been bad capacitors. Just like the parrot in Monty Python – “they have gone to meet their maker” and have done a sterling job for decades. Its simply time to replace them. Did you know - capacitors degrade when they have been stored for a long time. The expected design life of electrolytic, suppressor and motor capacitor does not extend beyond 20 years and they degrade quickly whether under under working or storage conditions when they are older than this.
Our own Nagravox Service Manual Instructions. For all kits, full instructions for each board are included with pictures before and after detailing exactly which components go where and a host of useful tips, checks and basic calibration. We are still the only supplier of kits that has taken the time and effort to produce a detailed instruction manual on how to install our kits, what to look out for and how to maintain existing calibration. Some of these exceed 100 pages and share our collective knowledge and experience over many years and many hundreds of restorations.
Don’t waste your time replacing just one or two capacitors on machines that are now 25 - 40 years old, replace ALL the likley troublesome electrolytics and tantalums. Old high voltage capacitors associated with the motors and tape drive will be near the end of their useful life - electrically and often even visually. Some capacitors may test ok on a low voltage modern tester. However capacitors usually need to be tested after they have operated for at least 10 hours (after being discharged and stored for many years) at working voltage and then tested under actual working voltage conditions. Modern testers cant do this. For such relatively low cost components its prudent to just replace the lot. All our components are new recent manufacture specifically for Nagravox and specifically specified as worthy replacement for the originals.
Another typical example of Nagravox service sheets.
UPGRADE LABEL PROVIDED. Why? Because we think that you should be proud of your work and it shows you have done a proper job.
Tools you will need.
· Soldering iron and solder
· Desoldering tool or good solder sucker
· Switch contact cleaner WITHOUT lubricant
· Screwdrivers, nose pliers, side cutters, 5mm - 13mm metric sockets and spanners
· Multi meter
IS THIS KIT FOR YOU? DO YOU HAVE THE SKILLS AND CONFIDENCE.
DO YOU HAVE QUESTIONS? Please communicate with me at Nagravox. This is my preferred medium for communication for all queries, aspects you may need assurance on, parts, puzzling faults and of course for a chat.
DO YOU NEED SPECIFIC SPARE PARTS? We have many individual components for all Revox and Studer machines. Please check back periodically or contact Nagravox with your requirements.
WHY BUY FROM NAGRAVOX?
* My kits are relevant. * My support is genuine and I am the only Revox and Studer service person offering it.
NAGRAVOX SERVICE UPGRADE KITS are formulated to include all the bits likely to need replacing that are commonly related. These target the most likely worn or age degraded parts.
SUPPORT and HELP. We try to incorporate most of the “confusing” or difficult aspects one needs to look out for in our upgrade kits instructional notes which we call “Service Sheets”. We also refer you to the official factory service manuals most of which are in the public domain courtesy of Studer / Revox. As our customer we are happy to either provide you with a manual or refer you to the appropriate download site. Further, as an after sales service, we are happy to answer any questions or difficulties you have in your repair or upgrade . We wont always know the answers but will certainly try our best to help. In any event, if we don’t know the answer it is an ideal opportunity for us to increase our knowledge and experience base and so welcome all problems. Indeed perhaps you might share some of your innovative solutions and experiences. After all we certainly don’t know everything and welcome advice, suggestions and constructive criticism. My philosophy is that in reality their are few problems only solutions waiting to be communicated or discovered. Why do we offer this level of support? Well as I indicated before, I do this out of a passion and I think I am right in saying so do you in your anticipated endeavors restoring your treasured vintage gear. It is in this common spirit I am happy to share my knowledge and experience with you as a customer.
ABOUT NAGRAVOX specialists in Revox, Studer and Nagra tape recorder overhaul and upgrade kits and parts.
I definitely DON'T consider Nagravox as a typical beady eyed Ebay vendor trying to get the highest price and hocking anything that will sell. Indeed ALL my kits and parts are buy it now not auction for that very reason. I love and work with Revox, Studer and Nagra vintage gear every day. Its great equipment and I love helping other enthusiasts restore their gear. I back up everything offered with a help desk via email, phone or Skype to make sure what you buy from me works and is installed and set up the way it should be. Confusion and problems always occur on old gear but I am there to help you through it. I don’t just sell stuff to enthusiasts - I help with solutions and make things as easy as possible whilst still retaining the high quality and integrity of the original designers. I am the only vendor that does this. Others of course may copy me, as they have already done in the last 2 years (just look at the other vendors suddenly offering overhaul kits on Ebay - hmm .... some with dubious white washing machine capacitors and below spec suppression caps !!). I also am now re-manufacturing parts specifically for Revox, Studer and Nagra usually using small specialist manufacturers in Europe, Australia and Taiwan to my design and specifications. Some of the more complex triple can high voltage capacitors for example I personally hand make for the F36 / G36 machines and old A40 amplifiers. One enthusiast restoring a F36 said to me about a year ago - surely you cant make much money on those considering the time and effort involved? He is right of course but the satisfaction of knowing every time I sell one of those kits, a F or G36 will be brought back into this wonderful analogue world of ours, frankly tickles me pink! Revox A77 VU meters now remanufactured and better quality that the original. Motor parts such as low friction washers, shims, brake felts, lubrication felts etc - all newly manufactured for Nagravox. Solutions that make problems go away - see our new NAB deluxe overhaul kits with reel spacer disks. GOOD IDEA - you bet. Why hasn't anyone else thought of it - who knows - its not rocket science. Will people copy me - of course - that’s life. Am I worried - no not at all - ts all good for the analogue tape enthusiast who wins all the way. Gee - I do ramble on a bit - don’t I!
If you are interested in our other endeavours please look at Nagravox or Laudarra. If you want to have a chat or chin wag - comms me at Nagravox - only a pleasure. Nagravox has a workshop and store in Sydney Australia. Of course.. if you are ever in the vicinity please visit me - there is always a good cup of tea or coffee and the chance of a chin wag.
Some blurb about me and why I do this. Some people think I am a nutter! Sometimes I might just agree! My name is Peter Mony. I am according to the government "a senior citizen" - indeed I get to ride on all the trains, busses and ferries around Sydney for $2.50 flat fee a day (a perk of being 'old' I am told). I live in a stunningly beautiful part of the world in the Northern Beaches on the outskirts of Sydney Australia and am a tertiary qualified engineer and scientist. I have worked in a few countries around the world for various companies in many different roles including in later years a few of my own businesses. I love vintage audio equipment and have over the last 45 years been involved in one way or another with it. I started Nagravox in 2010 after 3 years of “hard thinking” (my wife thought I was asleep on the couch). I reckoned that I would love to see more of the old Revox, Studer and Nagra tape machines restored to their former glory. I didn't want to be just another Ebay vendor hocking parts at the best price I could get for them. In 2011 I sold my specialist electronic manufacturing business Powerform Controls which was and still is successfully involved in HVAC controllers and electric motor speed control. This allowed me to have time to do those things in life which don’t necessarily have to be about making lots of money but rather being led in an ambulatory manner by ones passions. I love playing classical guitar, classic cars and restoring old electronic gear. My wife and lovely daughters think I am nuts but they love me anyway. In 2016 I moved to a dedicated workshop and premises not far form home on the stunning Northern Beaches of Sydney. In my “man cave”, as my dearest wife calls it, I can indulge a hobby and passion reliving my youth in the 60’s and 70’s when I was a youngster working as a recording studio technician and building valve amplifiers for friends.
All the best with your restoration and hobby. I hope our kits and parts can help you achieve your goal of a perfectly operating Studer or Revox machine ... running like the proverbial Swiss watch! May the analogue force be with you.
Kind Regards,
Upbeat Pete at Nagravox Australia.