So I grabbed this up at the thrift store today, when I got it back home I have it a quick clean and tried powering on, but it didn’t seem to respond.
Turns out it is turning on, but it is turning off nearly as quickly. I tested the volts on the power supply briefly and it shows up as ten on my multimeter (States it is 9.6 V).
Any help would be appreciated. I do have a video showing what is going wrong if needed.
Is the battery connected while you’re trying to power it on? If so, see if it’ll run on the power supply without a battery.
If that doesn’t help, check if there’s a tape already in the deck. If so, see if you can manually remove it. A number of old magnetic media cams start to get a bit sticky/stuck and trying to move the reel or head at startup can cause them to overdraw.
If first two don’t work, consider finding a proper replacement battery. If replacing the battery doesn’t work, then you’re almost definitely gonna need to crack it and look at replacing caps.
This goes in order of easiest/cheapest solution to most difficult, but I think capacitors are gonna be most likely on a piece of kit that old. But all the extra troubleshooting should help you narrow down possibilities before pop your new baby open and find that replacing caps still doesn’t help.