Revox A77 MK4 1975 Service - Cleaning / Restoration

Revox a77 mk4 1975 Service - Cleaning / Restoration

[@theonl1128]

Nice overhaul, but it's incomplete without a tune-up. The cards for recording and playing need to be regulated with a scope to give you the original specs. Also the tape tension needs to be tested. And don't forget the speed.... 😊 You see, there's still a lot more to be done here. ENJOY 😇

[@Mixarteaudio]

Thanks for stopping by the channel and participating. Greetings Fer

[@matt-g-2501]

Good video on cleaning the inside. 👍 Just be carful with WD40. It works fine for cleaning and you need to lubricate with a real oil afterwards. WD40 removes the oil and evaporates quite quickly, within some weeks. If you put it on a motor bearing (original ones are not sealed), the bearing dries out quickly and a replacement (best with abseils one) is needed.

[@carlhudson83]

gracias para su sabiduría.. Me embarco en una búsqueda para reparar mi nuevo A77 hoy, y estoy encantada de escuchar este maravilloso avant garde Arte 11. ¡El acompañamiento perfecto para una noche de alcohol isoproílico! ¡Qué emocionante saber que usaron esta maravillosa máquina! ¡Mis mejores deseos desde el Reino Unido y feliz año nuevo!

[@robertoraineriseith]

Great job and excellent soundtrack BTW. I did some little research about Luis Maria Serra and the Studio Arte 11 i didn't know before, impressive!

[@Mixarteaudio]

Thanks Roberto for visiting the channel and commenting. If Luis Maria Serra, after Arte 11 became a great and prolific composer of music for film and television with a vast and extensive career, I had him as a professor at the university. great teacher, and also I have the privilege of having equipment that I restored and belonged to him, really a luxury. By the way, your channel is very interesting too, I'll take the time to look at it carefully. thank you very much for your support

[@robertoraineriseith]

@@Mixarteaudio Thank you for visiting my channel and especially for introducing me to Luis Maria Serra! It is indeed a pleasure and an honour to be able to use some of the tools he used in his work. Good frequencies!

[@carlos-pratspratsonthebeat1145]

WOw que belleza

[@quangphuongbangcoiquangphu7330]

Tuyệt vời 😍 vietnam 🇻🇳 love Reel TO REEL ❤

[@hectordanielmoranpereiara7526]

Excelente video...! Muy creativo 👍👌😉👏

[@planoinfinito3809]

Maravilloso trabajo amigo, gran maquina tanto de buen sonido como de fabricación, un aparato para toda la vida, un grato saludo.

[@Mixarteaudio]

Gracias Infinito por el comentario y por apreciar el trabajo. Abrazo de R2R

[@planoinfinito3809]

@@Mixarteaudio A ti amigo, yo también tengo 2 revox en mi colección y algunos mas en este canal, un saludo. ya de camino me suscrito al tuyo.

[@buithelam3585]

Thanks for sharing.

[@Mixarteaudio]

Thank you for stopping by the channel and commenting. A big hug Fer

[@AleMarasso]

Que buen trabajo Fer!! Me pareció buenísimo el video, muy original y artístico como combinaste tu laburo ingeniero mecánico con la música experimental, quedó tremendo!!

[@jfz313]

Need to dump those firecracker PIFA caps asap.

[@Mixarteaudio]

They are totally fireworks. Thanks for stopping by the channel and commenting. hugFer

[@koozmusic]

Really nice video! Nice to see a neglected deck get the TLC it deserves. Though I fear the accompanying soundtrack may have given me a mental disorder. I have no idea why I left the volume up the whole time...😵‍💫

[@jonvincentmusic]

I had to turn it down. Reminds me of something they might use to torture someone with the lights turned off.

[@marcelomaurelli5849]

Muy buen trabajo fer. Como siempre impecable. Lo que debe sonar eso...

[@Mixarteaudio]

Gracias Marce. Min 38 del video señal de.ajuste a 1kz y apartir de ahi podes escuchar lo que suena. Hay registro por encima de los 20kz impecable. Muy Poco desgaste de cabezas como se puede apreciar en las fotos y el audio. Pronto estara en tus manos. Abrazo

[@carlos-pratspratsonthebeat1145]

Wow excelente Video , Una pregunta COmo haces el envio de la Revox y grabas en el Daw ?

[@Mixarteaudio]

Carlos Querido !!! todas las open reel tienen entradas y salidas en el caso de esta Revox salgo por la salida RCA a la entrada de mi interface de Audio una RME, es bien sencillo , gracias por estar ahi y comentar . Abrazo Fer

[@carlos-pratspratsonthebeat1145]

Muchas Gracias , Siempre Tus consejos y ayuda me sacan de Dudas , Bendiciones @@Mixarteaudio

[@carlos-pratspratsonthebeat1145]

@@Mixarteaudio Feliz Año Nuevo 2024 , Y Que Dios le Bendiga Mucho a Usted y a Su Familia y todo lo que emprenda.

[@Mixarteaudio]

@@carlos-pratspratsonthebeat1145 GRacias Carlos igualmente para ti Feliz año que se cumplan todos tus deseos . Abrazo Fer

[@gonzalopaz]

Muy buen trabajo…vi todo el video y le mandaré a un tecnico para que haga el mantenimiento al reel que compré en ebay, el cual llega a fin de mes…gracias amigo

[@Mixarteaudio]

Gracias Gonzalo por pasarte por el canal y comentar . No olvides suscribirte . Abrazo Fer

[@gonzalopaz]

@@Mixarteaudio estoy Suscrito desde el primer video que vi de la masterizacion en cinta 👌🏽

[@jonvincentmusic]

Great video but I had to turn the volume off. That background music is just a cacophony of noise.

[@michaelcasey6569]

I'm just starting to rehab an A77 MKII and it would be most helpful to know what chemicles you used to clean the PCB boards as well as the rest of the machine. Thanks for your time and very useful video.

[@Mixarteaudio]

Hi MIchael To clean almost the entire machine I have used isopropyl alcohol of the highest purity, for the contact parts I use a contact cleaner, especially on the potentiometers and preset, and logically the heads with isopropyl. Thanks for stopping by the channel and don't forget to subscribe. It is very helpful. Big hug from Argentina

[@nagra-ivs5558]

Just cleaning is not enough to rehab a Revox A 77....

[@federicodominguez6222]

Hola!! felicitaciones por el trabajo!! Tengo la misma máquina, un amigo me la regaló. Seguro la voy a restaurar en algún momento, esteticamente está bastante venida abajo. Voy a tener tu canal de referencia y de ser posible me gustaría contactarte en el futuro. Saludos desde Córdoba, Argentina.

[@Mixarteaudio]

Como te va Fede ? No importa que este venida a menos lo importante es que funcione bien son tanquesitos estos bichos y siempre se los puede Aggionar y levantar. Si bien no hay muchos repuestos en Argentina, se consiguen bastantes cosas, otras hay que pedirlas afuera por supuesto. Cuando gustes nos ponemos en contacto para lo que desees. Desde ya mil gracias por pasar por el canal y comentar . Abrazo Fer

[@MrPhoenixsz]

musik garuen haft aber sonnst gutes video

[@oscarrv756]

Excelente trabajo, podrías darme más referencias sobre Art11, no he encontrado, saludos.

[@Mixarteaudio]

Como te va Oscar , mira yo conoci a la Hija de Susana Espinosa que era la directora del grupo, se que tuvieron un mediano exito en los 70 y estuvieron de gira por Europa incluso, Según me conto la hija, Susana es directiva de la Universidad de Lanus en la carrera de Adiovisión . Gracias por pasarte por el canal y comentar. No olvides suscrirte . Un Abrazo

[@oscarrv756]

@@Mixarteaudio gracias por la respuesta, me parece muy interesante la música, me gustaría escuchar de su material, saludos.

[@oscarrv756]

@@Mixarteaudio su hubiese material me gustaría escucharlo.

[@maicolvillanueva2657]

amigo me puedes decir que maquina comprar ya que necesito un eco bueno y original para grabar mis voces soy locutor que maquina me recomiendas comprar. gracias

[@wormholesuperette8822]

Was that WD-40 you used as a lubricant? What were you lubricating? I’m a new owner diving into maintenance. Excellent tutorial (& music).

[@nicoduran6866]

Hola con que producto humectas el cotonete para limpiar y con que pulis los cabezales ?

[@Mixarteaudio]

Hola Nico como va , Mira con alcohol Isopropilico se limpian los cabezales, y depende que zona de la maquina hayas visto uso varios productos, puede ser desde Blem hasta limpia contactos u otro mas delicado que se llama Lem que es para electronica. porlo gral uso productos de laboratoros Delta . Desde ya gracias por pasarte por el canal y comentar. y Gracias tambien por suscribir . Abrazo Grande . Fer

[@StefanoOrsi]

Mi sono iscritto e ho messo il mi piace, grazie, molto interessante

[@vitezmiroslav1398]

I did not find 20 kohm potentiometers. Maybe 22 or 25 kohm? Thank you.

[@Mixarteaudio]

22 kohm are very good, in fact they are the ones I use because I can't find 20k either, so use them without fear. Thanks for stopping by the channel and participating. Greetings Fer

[@vitezmiroslav1398]

@@Mixarteaudio @vitezmiroslav1398 пре 0 секунди Recordin platinum has 3x20kohm, und 1x500 kohm or Ohm??? Thank you

[@zoltannagy1324]

Hey, I have a problem, I want to set bias trap in rec mode and in playback mode. In rec mode I make it settings successfully the bias trap , but… in playback mode the bias trap is unable to set in the Chanel 2 with coil L801. I screwing with the screwdriver the core of coil L801 but no changing in milivolts. In Chanel 1 I make it setting successful (less then 50mv) but in Chanel 2 no modifications. I changed the repr. Ampl. Card with card in Chanel 1 thinking the coil L801 is defect but no changes ! What is the problem??

[@rdpdesigns]

I have the A76, A 77 and A78 and need to sell, do not know if anything works but good condition and no cables. 15 x Revox reels as well.

[@Mixarteaudio]

Wow I would buy everything from you 🤣😂. How I can help ? I'm interested in Revox reels where are you from??? Greetings Fer

[@peppo.mirelli]

Pfff! Lo que suena eso!

[@alelinares4663]

hola una pregunta...tengo una a77 y la salida para conexión de parlantes no funciona...vendra en problema por la placa de amp...? abrazo grande.

[@Mixarteaudio]

Que A 77 tenes que modelo sabes? Seguramente el problema debe estar en las placas de amp.tendrias que revisarlas Gracoas por comentar y pasarte por el canal. Saludos Fer

[@russellscott1518]

Greetings, I have a MK4. I was attempting to test a light bulb in the power light (red) socket while the deck was connected to the power but was not powered on. The Positive and negative terminals of the socket touched and made a popping sound. Now none of the control buttons work, play, fast forward nor rewind. The deck still powers on but none of the functions work. Are you familiar with this problem and the solution? Thank you, russ

[@Mixarteaudio]

Hi Russell, obviously you have made a short circuit, the first thing you have to check would be the source, obviously its fuses, and check voltages, if after that the problem continues, you should check components on the Control drive board, for this you will need the manual of service surely here I pass you a link. www.hifiengine.com/manual_library/revox/a77.shtml I hope you can solve the problem friend, thanks for stopping by the channel and commenting. A hug Fer

[@russellscott1518]

@@Mixarteaudio Thank you and I appreciate your advice.

[@fickfehler3866]

tantalum per tantalum si ?

[@robertomontibeller2428]

Hello. Cracias. 😀😃

[@rolandoparabere9599]

hola, disculpa pero tengo que corregirte, es una a77 mk3 no mk4, saludos

[@Mixarteaudio]

Hola Rolando, no sos el primero que me lo dice, se ve que llama a la confusion por las teclas que le cambie, estaban destruidas, le puse las de un suicase que tengo destripada al lado, que son las mismas del mk lll es una Mk lv del 75 . Fijate bien gracias por comentar y pasarte por el canal. Slds Fer

[@rolandoparabere9599]

@@Mixarteaudio ah perfecto, un saludo

[@zoltannagy1324]

hy i have this revox mk4 and i have a problem, the vu meter in play mode not working, only in record mode working, so why?

[@mk23hk]

Works in Record only is normal. It is made that way.

[@federicozeri6274]

Cette machine est un Revox A77 MK III.

[@marianoarias5799]

como te ubico? para una revisión y posible restauración?. gracias

[@Mixarteaudio]

facebook.com/profile.php?id=1341944759 te paso mi face mandame un MP . Slds Fer

[@MrMoromette]

This is NOT a restoration but a cleaning. On my opinion restoration means:en.wiktionary.org/wiki/restoration 12/31/2019 · restoration (countable and uncountable, plural restorations) The process of bringing an object back to its original state; the process of restoring something. Or you did not touch the electronic parts at all by changing some of the electrolitic caps for example.

[@Mixarteaudio]

As you prefer, anyway thank you for commenting and your visit on the channel. I changed the counter belt and the keypad all from a suitecase. In these latitudes it is very difficult to get spare parts, in this case and luckily I did not have to change any electrolytic, what was done in other machines here is the link. and a hug kzbin.info/www/bejne/aKDNqpVuarFlrtE Bark Sancho sign that we ride !!!

[@tonbandgerat9768]

Hallo, leider nur in Deutsch dieser Kommentar. Es handelt sich um eine Revox A77 Mk3 die Du reinigst. Ich hätte bei dem Aufwand den Du betrieben hast, direkt die Entstörkondensatoren (Knallfrösche) gewechselt, die sind nämlich defekt. Die Video Musik, naja, ich habe den Ton weg gedreht, Geschmackssache. Wenn ich eine Revision durchführe, dann wechsel ich sämtliche Elkos, Tantal-, Entstör- und Motorkondensatoren. Sämtliche Trimmer und die Lager der Wickelmotoren und des Bandlaufs werden ebenfalls gewechselt. Weiterhin viel Erfolg! Gruß Ralf

[@Mixarteaudio]

Wie wäre es mit einem Freund, na ja, natürlich habe ich es in anderen Einheiten gemacht, die es gerechtfertigt haben und dass der Kunde dazu bereit war. Ich kann Ihnen ein Video von dem geben, wonach Sie fragen, aber in diesem Fall wurde das Tastenfeld geändert, weil es auch fehlte Der Rundenriemen, alle seine Platten wurden gereinigt, hier in Argentinien ist es sehr schwierig, bestimmte Ersatzteile zu bekommen, Sie tun, was Sie können. Vielen Dank im Voraus für das Kommentieren und den Besuch des Kanals. Grüße Fer kzbin.info/www/bejne/aKDNqpVuarFlrtE

[@1firecat1]

@@Mixarteaudio you can order every part you need at: www.revox-online.de they also have a shop at ebay.de

[@Mixarteaudio]

@@1firecat1 Dear Firecat If I know the site and I know Martin even with whom and exchanged some emails at the time, he has also sent me several spare parts, when my Argentina did not rule the communist populism that took power again in 2019. Unfortunately we have been isolated again from the world is A shame really because we are like fallen off the map, then you have to make do with what you get around here, it is almost always used by other Revox that I have in the basement of my house luckily, thank you very much for the suggestion and for stopping by the channel to comment on. A big hug. Fer

[@harveysvintageaudio]

Please redo the video without that mental music ! apart from that it's a good video.

[@Mixarteaudio]

Hello harveysvintagaudio, impossible has been around for many years and has many views, it is also experimental electronic music from the 60s / 70s made by the group that used the machine that I am restoring. Thanks anyway for the suggestion and for going through the channel and commenting. Hug Fer

[@harveysvintageaudio]

@@Mixarteaudio oh okay, did not realise the significance of it.

[@moritzdittmer6772]

Great video... Could you please tell me what track is around 35:00?

[@lucifer240794]

The song at min 39:00

[@lucifer240794]

kzbin.info/www/bejne/iKqVlJ2Ln9iUr9Esi=2qpD2ERISnWxIljq

[@lucifer240794]

I find this album but not the song from @ 39.00

[@lucifer240794]

@mixrate

[@bivouacrecording3412]

I love the sounds. What album is this?

[@Mixarteaudio]

The album belongs to the group Arte 11 from Argentina, it was a group from the 70's of experimental electronic music. Thank you in advance for stopping by the channel and commenting. Don't forget to subscribe. Hug fer

[@lucifer240794]

Can you please upload this album ? Thank you!

[@conundrum112]

Great video, but the music !!! terrible, please change it.

[@Mixarteaudio]

Hi Harvey, The music belongs to an experimental music group from the 70s of Argentina called Art 11, which had a medium success in Europe, it must be put in context, the machine belonged to the director of the group and many of those audios were recorded with that same machine in the 70s. I found it propitious to honor them. Thank you in advance for stopping by the channel and commenting. Hug fer

[@conundrum112]

Oh I see, not my kind of music though.

[@mellydoerr]

That´s no restauration, that´s cleaning a tape machine. No capcitors are changed.

[@Mixarteaudio]

You are hot for something else I know, but not posing as a Yankee you get it, I know perfectly what a restoration is and this is it, if you do not change any capacitor it was because he did not need it, its audio is immaculate. He changed all the keypad and belt kit. also all the faders and swichts were cleaned. and all engines lubricated. if you want I have to see a full recap of a B77. While you worry about whether or not it is a restoration, I am repairing another, A77 they are my little treasures in this world. Thank you very much for stopping by my channel and commenting.

[@eliedelorme9945]

Horrible sound I had to turn the volume off

[@Dickleder]

Bueno, tu trabajo no tiene nada que ver con la restauración. La máquina está bien una vez limpiada, pero no ha sido restaurada ni se le ha proporcionado un servicio integral. Se acaba de volver a colocar la antigua contracorriente y la unidad de freno se destruyó rápidamente. ¡¡¡Clase!!! La guía de la cinta se limpió sólo a medias. Oh bien. Es mejor cambiar el nombre de tu vídeo a Limpiar un A 77 MK xxxxx

[@Mixarteaudio]

Que bueno Dickleder Gracias por pasarte por el canal y comentar, me encantaría ver tus trabajos de restauración, pareciera ser que la tenes muy clara

[@Dickleder]

@@Mixarteaudio Claro, sé de lo que estoy hablando. Mi trabajo principal es Studer Service...Reparo y restauro máquinas de cintas analógicas. Sin embargo, lo primero que hago son las grandes máquinas de cintas de estudio. Pero a pesar de esto, puedes despertarme por la noche y puedo informar inmediatamente qué defectos ocurren con un Revox A 77/B77/PR 99 según la norma. Por supuesto, estoy familiarizado con todas las revisiones que deben realizarse. Después de tantos años, muchas cosas son rutinarias. Saludo

[@Mixarteaudio]

@@Dickleder Bueno te felicito !!! Saludos Fer