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Tektronix TDS320 PSU

Discussion in 'Troubleshooting and Repair' started by Terry Marsh, Dec 31, 2008.

  1. Terry Marsh

    Terry Marsh

    1
    0
    Dec 31, 2008
    Can anyone enlighten me as to TO220 transistor type in location Q1
    mounted on the primary heatsink of the power supply.
    I have replaced all other defective components, but Q1
    has a large hole blown in it, so am unable to identify it.
    Thanks.
     
  2. LordKim

    LordKim

    1
    0
    Jul 2, 2009
    The indications I read on this transistor are :
    T I
    P50
    214
    with an additional M circled which means Motorola.
    I found easier to replace all the power supply, you need 2 x 5V,1 x 15 V,1 x 8.6V ,1 x -8.6 V, 1 x -5V and 1 x 12 V if you have option 14.
    I hope this will be helpful to you.
     
  3. EIATU

    EIATU

    1
    0
    Sep 9, 2010
    Q1 - PSU TDS320

    Hi

    Transistor Q1 is TIP50.

    Eitau
     
  4. shrtrnd

    shrtrnd

    3,656
    452
    Jan 15, 2010
    For trivia sake, the '214' is the date code.
    Manufactured 2002, fourteenth week.
     
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