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Fisher TX55 restoration

Discussion in 'Fisher' started by paul_ral, Apr 20, 2018.

  1. paul_ral

    paul_ral Active Member

    Messages:
    259
    Cleaning controls, inputs and I replaced old Alps power switch
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    After recap my speakers sounds very good
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    The amp wood cover needs some attention
     

     

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  2. larryderouin

    larryderouin Turn it UP, POP? PLLUUEEEZZZZZEE Subscriber

    Messages:
    21,895
    Location:
    Glen Burnie Md.
    Outstanding work Paul. I especially like the Sansui spkrs.
     
  3. paul_ral

    paul_ral Active Member

    Messages:
    259
    Thanks Larry! I appreciate your help.
    Another picture with Sansui&Marantz
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    Last edited: May 2, 2018
  4. paul_ral

    paul_ral Active Member

    Messages:
    259
    Original veneer on bottom
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    Upper part is painted in this ugly black
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  5. paul_ral

    paul_ral Active Member

    Messages:
    259
    Power source improvement. I use 3300uF/63V capacitor 661-EKMH630VSN332MA2
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  6. paul_ral

    paul_ral Active Member

    Messages:
    259
    Restored woodcase
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    Last edited: May 15, 2018

     

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  7. paul_ral

    paul_ral Active Member

    Messages:
    259
    Back to TX-55 with some new parts coming from Mouser: new 450-3225 knobs from Eagle Plastic Devices (unfortunately they don t have in stock 450-2225 ones, I put them in next order), new Bourns 3329H series trimpots, Wima MKP10 capacitors for smoothing in PS
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  8. paul_ral

    paul_ral Active Member

    Messages:
    259
    10nF WIMA MKP10 capacitors over rectifiers
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    Little Bourns 3329H
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    adjust idling current according SM
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  9. paul_ral

    paul_ral Active Member

    Messages:
    259
    New 450-2225 knobs from Mouser and this project is finished
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    Thanks for watching!
     
  10. Bert Beukema

    Bert Beukema Active Member

    Messages:
    192
    Location:
    The Netherlands
    This topic is long dead, but i've got one of these on my bench. Both output channels were blown, rebuilt the little amp and it's producing a nice sound. Not very refined but respectable for this baby amp.

    Mine has obviously been part of an overhaul. Some odd things: on the back of the amplifier PCB there are two fuse outlets, supposedly for the output channels. These are no longer connected and the amplifier PCB still had snipped wires on them. The back of the amp now holds the three fuses, but it's odd that the revision was executed so shoddily,

    The schema says that each output capacitor has a throttle / choking coil, mine does not (just a wire soldered in). The machine in this topic still has them. Does anyone know the original coil spec / value and why they would have removed this from the PCB?

    Regards,

    Bert
     

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