Fisher FM-M500

Collapse
X
 
  • Time
  • Show
Clear All
new posts
  • mockingbird
    Badcaps Legend
    • Dec 2008
    • 5484
    • -

    #1

    Fisher FM-M500

    I picked this up recently. It's a vintage early 80s AM/FM radio with digital control. I really like the feel of old electronics like this. Very solidly built:


    Can someone here tell me what would entail getting this thing to work? I don't even know if it powers on because it has a European plug and I can't find my converter (Thing is 110v/220v - just need to convert it to US style plug). I'm not even sure if I want to turn it on with what's in it right now.

    It's got that old Rubycon capacitor smell. I know that these caps have been known to work even after 30 years, but I'd still like to replace them. Is there anything else I should look for? Are those chips inside all custom or do they still make them? I se some Hitachi chips and some other common ICs, but those Toshiba chips are the ones I'm interested in. Should I add sockets?

    The only thing I could find on Youtube was a repair of a Fisher amp:
    http://www.youtube.com/watch?v=jov0sioiTiU

    I assume their products weren't so common.

    Also, if you look at the attachments, there's this weird thing coming out the back... On the top of it, there's a lug that you can screw and unscrew. What is it? You can see the wires coming from it that attach to something inside the box.

    There's also two screw terminals one says AM, one says Ground. I found them with one of those television adapter things you screw into the antenna holes. Is this proper? The port farthest to the left says "FM (75 Ohms)". Anything special supposed to go there?
    Attached Files
  • budm
    Badcaps Legend
    • Feb 2010
    • 40746
    • USA

    #2
    Re: Fisher FM-M500

    The black bar is the AM antenna rod, you swing it out and you can move it a little bit for best reception, the slot for the screw driver inside that big black plastic rod is too move the ferrite core when they setup the AM tuner, no need to touch that.
    If the buit-in rod antenna does not pick up the signal well, they give you the terminals for attaching long antenna wire for the AM.

    Then there is the BALUN for converting coax 75 Ohms to 300 Ohms FM antenna that I can see in the picture which is not for that AM antenna terminal, you suppose to the PAL FM terminal on the left, you can get the adapter PAL to F connector from RADIO SHACK.
    http://www.radioshack.com/product/in...LAID=107597300

    I used to work for FISHER/PIONEER/SANSUI/PHILIPS/AKAI/TEAC/SANYO/HITACHI/SCOTT warranty repair shop in the 70's, let me see if I have the service manual for it.
    90% of all my stereo gears are from the 70, they are still running great, I also collect those gears myself, they built like a tank.
    There may be a voltage selector swith inside for selecting 120/230V inside.
    Last edited by budm; 07-12-2012, 04:56 PM.
    Never stop learning
    Basic LCD TV and Monitor troubleshooting guides.
    http://www.badcaps.net/forum/showthr...956#post305956

    Voltage Regulator (LDO) testing:
    http://www.badcaps.net/forum/showthr...999#post300999

    Inverter testing using old CFL:
    http://www.badcaps.net/forum/showthr...er+testing+cfl

    Tear down pictures : Hit the ">" Show Albums and stories" on the left side
    http://s807.photobucket.com/user/budm/library/

    TV Factory reset codes listing:
    http://www.badcaps.net/forum/showthread.php?t=24809

    Comment

    • mockingbird
      Badcaps Legend
      • Dec 2008
      • 5484
      • -

      #3
      Re: Fisher FM-M500

      Wow, thanks so much!!! Yea, there's a 110/220 switch on the back. It's already set for 110, the plug just happens to be the European style plug and I need to buy a converter or find the one I have lying around here somewhere.

      Oops, I already played with the ferrite core...

      Ok, so that balun is not supposed to be there... Yea, didn't think so...

      Comment

      Related Topics

      Collapse

      • Flaku_34
        Acer Nitro XV273 and Predator XB273, look inside and disassembly guide.
        by Flaku_34
        Introduction:
        Hello everyone, this topic is more of a knowledge sharing and look inside type of post, but for someone working on this model of display it might be useful. Recently I bought Acer Nitro XV273 XB MIIPRZX with busted electronic, but screen was intact, price was incredibly low, so I took a gamble and bought the unit and try to fix it. As I dug inside, I found out that my motherboard was not responding, although all voltages seemed fine. I wasn't able to find any reliable information about this monitor on the web (only some pictures of motherboards from Ebay). By some research...
        04-18-2024, 12:47 PM
      • Document Archive
        Mounting and Handling Guidelines for TO220 TO220F TO247 Cases / Packages
        by Document Archive
        Mounting and Handling Guidelines for TO220 TO220F TO247 Cases / Packages

        The TO220, TO220F and TO247 are the popular packages for power devices because of their versatility and ability to dissipate moderate amounts of heat. This application note describes the basic guidelines for handling power MOSFETs in TO220, TO220 and TO247 packages shown in Figure 1. Please note that only mechanical and soldering guidelines are covered here. Additional precautions are required for isolating high voltage rated devices to meet safety regulations.

        Securing a good thermal interface between...
        10-07-2024, 04:35 AM
      • Thermaltake
        Panasonic NV-FS200 restoration
        by Thermaltake
        Hi,

        I got this VCR in compensation and well, It wouldn't be fun If I didn't f*** something up doors that won't close completely was easy fix.

        I was thinking that someone who messed with VCR before me didn't screw all the way this screw(see picture), but later I found out that this screw is suppost to be like that smh... and now after I clean head and everything I got this kind of situation on video (see videos)

        - on first play I got black and white/color exchange white some noise and picture is flickering

        https://imgur.com/ygMXcWI
        ...
        06-23-2024, 12:13 PM
      • winchesterr
        MSI GF66-11UE MS-1581 BOARDVIEW
        by winchesterr
        Hi guys, I have a problem with my laptop which is MSI GF66-11UE. 3-4 days ago I wanted to change thermal paste,unfortunately one of screw was become stripped and I forced a little bit that screw.Anyways when I finished the change of thermal paste and picked up the laptop at last I realized that I didn't put the edp connector inside but the problem is I put this while the battery was still connected the motherboard.That caused a few sparks.


        Fortunately, the laptop booted up afterward. However, it was running using the CPU's integrated graphics, and it didn't detect the dedicated...
        04-06-2025, 11:07 PM
      • howardc64
        A1312 (27” iMac 2009-2011) A1407 (Thunderbolt Display) A1316 (Cinema Display) Display Black Screen Repair
        by howardc64
        Problem

        This is an LG edge LED lit LCD Display. The LEDs are on the bottom edge of the display. There are 2 bars (left and right) Each bar has many LEDs and a 6 pin connector. Each pin drive several LEDs thus is the highest current flow / heat junction. The weak lead free solder gradually fails with thermal expansion/contraction cycling and increases resistance. PSU will compensate up to a point, then when the current is too high, PSU just shut down the backlight causing a dark display. I have even seen one which the connector just fell off as solder points became completely detached....
        08-04-2024, 10:36 PM
      • Loading...
      • No more items.
      Working...