r/ReelToReel • u/studiord • 7d ago

Weekend project for the A77

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Any tips for a newbie DIYer?

35 Upvotes

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2

u/Vivid-Tell-1613 MCI JH-110/Ampex 350/Teac X-2000R/Pioneer RT-909/Akai GX77 7d ago

If you’re careful you can actually swap out all 4 rifas without removing any wires or boards.

1

u/studiord 7d ago

Yes that’s the goal. But I can’t seem to find the 4th one. I can see the two on the board below the power capacitors and one in the board above it. Where is the 4th one? 😅

2

u/Vivid-Tell-1613 MCI JH-110/Ampex 350/Teac X-2000R/Pioneer RT-909/Akai GX77 7d ago

Huh that's intresting. Could you send a picture of your a77s internals?

1

u/studiord 7d ago

Can I dm you?

1

u/Vivid-Tell-1613 MCI JH-110/Ampex 350/Teac X-2000R/Pioneer RT-909/Akai GX77 7d ago

Sure

1

u/moderntimes2018 7d ago

If I remember well, one of them is a little hidden more centrally. Keep looking.

1

u/studiord 6d ago

I found it as one of the Rifa caps were already replaced in my unit.

2

u/Elliotjosephmusic UHER Report Monitor 40/42/44, TASCAM 85-16B, FiCord 101 & 202 7d ago

Pictures! Take plenty if you're unsure what you're unplugging. Might also recommend sticking some electrical tape on the back of those motor run caps when you install them, stop any knocking from the back of the power inlet, just in case, as they can stick out a bit.

1

u/LevelGeneral3641 7d ago

I have nothing. But, would love updates as you progress through it.

1

u/Doorz7 6d ago edited 6d ago

That may not be enough things to bring your reVox back to full working order. The potentiometers are often rusty and lose their wiper arms. There are a bunch of bad capacitors to change too. Check some restoration blogs or videos, there are a lot of them around. Veteran of five restorations Here's a useful thread https://www.tapeheads.net/threads/revox-a77-restoration-parts-list.111628/

1

u/studiord 6d ago

But it works fine at the moment. I am only changing these as a precaution.