Univox EC80A help needed



Moderators: Ghost Hip, Gunner Recall, metalmariachi

Forum rules
The DIY forum is for personal projects (things that are not for sale, not in production), info sharing, peer to peer assistance. No backdoor spamming (DIY posts that are actually advertisements for your business). No clones of in-production pedals. If you have concerns or questions, feel free to PM admin. Thanks so much!

Univox EC80A help needed

Postby Blood_mountain » Sun Jun 03, 2018 3:21 am

Hi folk,

I’ve got a Univox EC80a tape echo that is semi-working, and I’d like to get it fully working but am not super tech-savvy. It powers on and passes audio, but there is a definite volume drop and it’s muddy. There Is currently no echo to this echo machine! The echo delay speed seems to work - tape motor speeds up and down accordingly. No clue about the repeats as I can’t hear them. The echo balance is where I think the main problem is. Going to fully wet there is no sound at all from the unit. Also, and this seems super weird, if I put my fingers on a certain spot on the circuit board, I can get a radio station to tune in. I have a short video I took of these issues if anyone is an expert and wants to have a diagnostic look at it. Any help would be greatly appreciated!!
Blood_mountain

involved
involved
 
Posts: 67
Joined: Tue Apr 10, 2018 12:14 am

Re: Univox EC80A help needed

Postby Ben79 » Sun Jun 03, 2018 10:04 am

I think the radio phenomenon is probably normal. Off the top of my head I think these used a cartridge, do you know what state yours is in?
Ben79

User avatar
committed
committed
 
Posts: 457
Joined: Thu Nov 01, 2012 6:16 pm
Location: France

Re: Univox EC80A help needed

Postby Blood_mountain » Sun Jun 03, 2018 10:27 am

Ben79 wrote:I think the radio phenomenon is probably normal. Off the top of my head I think these used a cartridge, do you know what state yours is in?


It was in bad condition when I got it, and I did a DIY fix on it with my limited knowledge. Cleaned it all out, put new pads in it, relooped the tape, etc. - but I'm not super mechanically inclined, so maybe the loop that I've put in there is not functional - these tapes have the traditional 8-track/4-track loop that is a continuous loop that unravels from the center, and I've created just a basic 5 second linear loop - maybe it won't work that way? I just thought for the purposes of testing and fixing the basic loop should work. I've got two "new" tapes coming in the mail for it, so maybe those will help.

I've been on some other forums and these units seem to be plagued with similar issues. I'll monkey with it here and there until I've exhausted the extent of my abilities.
Blood_mountain

involved
involved
 
Posts: 67
Joined: Tue Apr 10, 2018 12:14 am

Re: Univox EC80A help needed

Postby Dr Satan » Fri Jun 08, 2018 3:09 pm

Make sure the cart is pushed in all the way. If it's a PLAYTAPE and not the ones made for it, you have to modify the unit or cart to work. Also, if the little back door is missing, the tape probably isn't being pressed against the heads firmly. Hold the cart in the slot firmly and see if it works then. And yes, the radio thing is a feature. EDIT- I have seen people fold up a piece of paper and wedge it in under the cart to maintain firm contact with the heads.
Dr Satan

User avatar
committed
committed
 
Posts: 189
Joined: Thu Aug 25, 2011 4:11 pm
Location: South of the ATL


Return to DIY Effects



Who is online

Users browsing this forum: No registered users and 2 guests


Sponsored Ad. (Please no inflated/repetitive clicking. Thanks!)

Advertisements help support ILF


ilovefuzz.com is not responsible for user-submitted content. Users participate at their own discretion and risk.