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  • LIttle cheap readido is dead. Thermal fuse?

    From Ed Vance@3:633/10 to All on Sunday, March 22, 2026 20:11:57

    From: NONONOmisc07@fmguy.com

    I have a cheap little radio that runs on AC or batteries, a Jensen
    MR-550, fwiw. The voltage coming out of the power transformer is
    zero.
    Between the prongs on the AC plug it has 580 ohms. It also says it
    has
    a "thermal fuse fitted D 125 0" (I think the last digit is a zero.)
    But
    I haven't foudn the fuse yet. Would the fuse be in the secondary
    circuit? I thought it would be in the primary but there is
    ocntinuity
    there, 580 ohms. My friend says it wroked fine for the first 2
    months
    and then went dead.

    --- SoupGate-Win32 v1.05
    * Origin: you cannot sedate... all the things you hate (1:229/2)


    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

    --- PyGate Linux v1.5.13
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From Chuck@3:633/10 to All on Monday, March 23, 2026 09:49:08
    On Sun, 22 Mar 2026 20:11:57, NOSPAM.Ed.Vance@darkrealms.ca (Ed Vance)
    wrote:


    From: NONONOmisc07@fmguy.com

    I have a cheap little radio that runs on AC or batteries, a Jensen
    MR-550, fwiw. The voltage coming out of the power transformer is
    zero.
    Between the prongs on the AC plug it has 580 ohms. It also says it
    has
    a "thermal fuse fitted D 125 0" (I think the last digit is a zero.)
    But
    I haven't foudn the fuse yet. Would the fuse be in the secondary
    circuit? I thought it would be in the primary but there is
    ocntinuity
    there, 580 ohms. My friend says it wroked fine for the first 2
    months
    and then went dead.

    --- SoupGate-Win32 v1.05
    * Origin: you cannot sedate... all the things you hate (1:229/2)


    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.

    --- PyGate Linux v1.5.13
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From Ed Vance@3:633/10 to All on Tuesday, March 24, 2026 20:31:48

    From: chuck23@dejanews.net

    On Sun, 22 Mar 2026 20:11:57, NOSPAM.Ed.Vance@darkrealms.ca (Ed
    Vance)
    wrote:

    The thermal fuse is usually under the transformer windings wrap.

    --- SoupGate-Win32 v1.05
    * Origin: you cannot sedate... all the things you hate (1:229/2)


    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

    --- PyGate Linux v1.5.13
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)
  • From micky@3:633/10 to All on Sunday, April 12, 2026 23:38:53
    In sci.electronics.repair, on Mon, 23 Mar 2026 09:49:08 -0500, Chuck <chuck23@dejanews.net> wrote:

    On Sun, 22 Mar 2026 20:11:57, NOSPAM.Ed.Vance@darkrealms.ca (Ed Vance)
    wrote:


    From: NONONOmisc07@fmguy.com

    I have a cheap little radio that runs on AC or batteries, a Jensen
    MR-550, fwiw. The voltage coming out of the power transformer is
    zero.
    Between the prongs on the AC plug it has 580 ohms. It also says it
    has
    a "thermal fuse fitted D 125 0" (I think the last digit is a zero.)
    But
    I haven't foudn the fuse yet. Would the fuse be in the secondary
    circuit? I thought it would be in the primary but there is
    ocntinuity
    there, 580 ohms. My friend says it wroked fine for the first 2
    months
    and then went dead.

    --- SoupGate-Win32 v1.05
    * Origin: you cannot sedate... all the things you hate (1:229/2)


    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.

    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.

    --- PyGate Linux v1.5.14
    * Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)