How to replace the counter belt on the Revox B77 / B77HS / B77 Mk2 / PR99 / A77 tape recorder
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- เผยแพร่เมื่อ 23 ก.ค. 2024
- How to replace the counter belt on the Revox B77 / B77HS / B77 Mk2 / PR99 / A77 tape recorder.
Replacement B77BELTKIT available from our online store:
gbaudioshop.co.uk/shop/e/inde...
Note, this is not a Revox part, but a compatible, practical alternative replacement.
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#Revox #B77 #taperecorder #reel #gbaudio #gbaudiouk #drivebelt #hifidrivebelt - วิทยาศาสตร์และเทคโนโลยี
Superb efficient video. Easy to follow and well described in every detail. Purchased the required belts from GB Audio and fitted them in 20mins. I wish all videos were this professional. Thanks.
Thanks for your valued feedback
This is much apreciated. Straightforward and up to the point. Just ordered my new belts.
Very good explained. Nice video!
Excellent, thanks for video.
Thanks...very helpful!
I loved this tutorial!
Glad you liked it!!
thanks for the info greetz
Great video, belt kit ordered......:-) Can I ask a tech question...? I want to transfer some old studio tapes from the mid '80.s onto my pc. I have connected my B77 output to the line in on the pc but I'm not getting any sound out. The headphone sockets are fine and i'm pretty sure the signal is getting to the pc. Do I need to install Audacity to transfer the tapes to my pc? Any help is greatly appreciated.
Hi Steve. Yes you will need some sort of recording software. Audacity is excellent for this sort of thing but I guess other apps are available. Once installed, go into Preferences and select the line input as the recording source. Hit Record and you should see the input meters lighting up. From memory, you may need to select Monitor Thru in order to hear what you’re recording as it goes in. Good luck, GB
Excellent video!!
What is the size/diameter of the rubber belt that you replaced the plastic toothed belt with?
What a great video. My longer belt was in fact broken. The one with the teeth was fine. I ordered a replacement kit on your website. Thanks for making this. I did notice on my unit that when I slide my lever accross to the left it engages the preamp but the transport mechanism head cover does not close or move. I can manually lift it but it does not stay up. If I let it go it goes back down. Not a big deal but I am curious why when I slide the lever over to the left the head cover does not move up and close and cover the tape head? Any ideas? Do you work on these units? Do you replace capacitors and tape heads as well ? Just curious. Going to take a closer look at your website. Thanks again for a great video.
Thanks for your kind comments. What you are doing there with the slide lever is engaging the machine in edit mode: the tape is brought up to the heads and you can wind the spools manually to find the point in the tape which you want to edit. With the head guard open, you can accurately mark the tape ready for cutting.
I had it recently replaced with an electronic counter , and a Pauze module installed . The only slight issue is : sometimes upon power up , the tape starts to play without actually pressing the play button . ( only at startup ) Sometimes it does not . Anyone ?
Simple easy to follow video. My B77 seems to have developed a major fault. The play , stop etc buttons are not responding. Unit powers up and capstan is turning but nothing from the reel tables. Any thoughts - fuse problem perhaps. Andy
The fault is most likely to be on the transport control PCB (plug-in) part no. 1.177.315 (Mk1) or 1.177.317 (Mk2)
@@gbaudio1212 Many thanks. I have sorted it. One of the 1.6A fuses kept blowing. Suddenly realised that the power cable at the back was inserted the wrong way round, as soon as I turned it round the fuse did not blow and the play buttons etc worked again.
thanks man, Excellent work, I, m from argentina and i need replace the pitch roller from my Revox b77, do you know who sale this part and the part number. Thanks I enjpy a lot your videos
The pinch roller is Revox original part number 1.167.178.82 now obsolete, but you can get new third-party parts from www.revox-online.de/en-gb/ersatzteile
@@gbaudio1212 thanks man I apreaciatte that
What is length of each belt ? Does smaller counter belt gotta be toothed to work ?
The lengths are shown on the product page, gbaudioshop.co.uk/product_info.php?products_id=539
As it says in the video, the original belt was toothed but it does not have to be. We find that a square or flat section belt works fine without slipping.
same process when I rolled back the odometer on my Fiat Regatta
Does the A 77 require the small belt the counter has the teeth on both rear roller Parts If so where do I get the Small tooted belt Thank Youj
We don't sell the original Revox toothed belt but we provide a free flat belt with the main counter belt, which is a fully functional replacement, as described in the video.
gbaudioshop.co.uk/product_info.php?products_id=539
I didn't need it on my MK2 mate - I only used the big belt
I have found that some A77 counters just use meshing gears instead of the small toothed belt.
Parts: B77BELTKIT available from our online store:
gbaudioshop.co.uk/shop/e/index.php?rt=product%2Fproduct&product_id=497
The brakes friction sound is a bit suspicious :-)
They can sometimes get a bit squeeky. Make sure that the metal band is perfectly lined up on the brake drum when the brake is applied. The metal band is attached at each end with a rivet which can pivot to allow the angle of the brake band to be set accurately. Good luck.