LIttle cheap readido is dead. Thermal fuse?

You can measure the impedance of the transformer output, but thermal fuses are normally placed in the primary.

Check for dry solder joints on the transformer pins.

RL

I'm making progress.

It is infinite.

That's what I thought.

No pins. Primary wires connected to line cord and covered with heatshink tubing. 580 ohma between them. Secondary wire straight to little circuit board, which has diodes on it. I took out the transformer and I don't see where the fuse would be. Maybe next to the windings.

It also runs on 4 C-batteries. My friend says that doesn't work either, but things don't usually break in two ways at once, especially a Jensen radio, even if cheap. Maybe one of his batteries was dead. If the 4 batteries put out 6v DC, what should the AC output voltage of the transformer be to get 6 volts for the radio?

Or I could assume it's the fuse, take the current one apart, find the fuse, bypass it, on the theory that the fuse should have been in the primary anyhow. ??????

And when I tried it with a universal charger, set to 6v, it didn't work, nor with the polarity reversed. Not a peep out of it on AM or FM across the whole dial.

Oops. should I have tried 7.5 and 9 volts too?

Getting it to work with batteries would be step one.

Check the on/off switch. Trace battery voltages.

RL

check also the battery/mains switch, or whatever is present to switch between the two,if only an orring diode.

Check speaker contacts . . .you won't get any noise out of it (turn-on click or background static) if it's disconnected.

RL

Mickey, In the late 1950's I got my first AlliedRadio catalog. I also hung around the Hi-Fi section of a store.

My thoughts back then was Jensen was one of the better brands as Bogen (Bogan?) was

Myself, I didn't buy the high priced spread. My Stereo amplifier was a Heathkit AA-32. <G R I N>

Ed

The thermal fuse is usually under the transformer windings wrap.

Chuck, My post to Micky was only a comment in this thread. I am sure Micky read your post about the thermal fuse and appreciated the help. Ed

Aha, maybe it is in the secondary for some reason. I'm out of town but I'll look when I get home. I need to ask if he uses mostly batteries or AC for the radio.

BTW, they have the very radio on ebay for iirc $25, so I shouldn't spend forever on this.