1 9 9

: IC-760

  1. #1

    19.12.2006
    7

    IC-760

    :

    IC-760PRO , . - !

    mPC1042C ?

    !
    !


  2. #2

    21.03.2006
    307
    The proper office of a friend is to side with you when you are wrong. Nearly anybody will side with you when you are right.(c)Mark Twain

  3. #3

    19.12.2006
    7
    , PDF .

  4. #4

    26.06.2005
    , KO85UR
    571
    RK3AOR
    pdf ( ALLDATASHIT ...) . , .
    , (ex RV3DGV)

  5. #5

    27.02.2005
    789

    PS-35 how to fix proper way

    PS-35 . Chris Gibbs ICOM UK



    , . , . R5 3,3 , , D1. , , , .
    . , , 4,7 , ., .
    Q4-Q5 , Q2-Q3 4,7 22 .
    35, 36.


    Did the mains fuse blow, if no, then maybe switching transistors are OK. Check R5 3.3ohms wire wound resistor connected to bridge rectifier. (D1). If this is blown open circuit then output transistors are probably short circuit.
    , R3 150 , IC1. , .
    , 112 .

    Have you measured them for short circuit? You will need to unsolder them maybe,
    because of low-value (4.7ohm etc) resistors, to measure correctly. If output
    transistors Q4, Q5 are short circuit then you will need to change Q2 and Q3 as well and the 4.7ohm and 22ohm resistors. Sometimes C35, C36 as well.
    If all transistors are OK, check value of start-up resistor R3 150K than feeds the neon in photo-coupler "IC 1". The resistor goes open circuit and PS35 does not start.


    If all the transistors need replacing
    the cost will be about 112 including carriage and VAT.

    For the 2SC2501 (Q2,Q3,) we use 2SC3162 (VCBO 500V IC 3A). for 2SC2307 (Q4, Q5,) 2SC3164 or 2SC3833. Both VCBO 500V IC 10A.

    There will be other non-Japanese types that are OK.
    Switching power supplies in televisions etc.


    Switch transistors from computer PSU's will have similar specification or better. They may be OK, but we have never tried any.

    110

  6. #6

    19.12.2006
    7
    !!!

    UPC1042C???

    !!!

  7. #7

  8. #8

    19.12.2006
    7
    TL494 ?

    !!!

  9. #9

    27.02.2005
    789
    , - - .
    :
    (. -)
    -, !
    -???
    - - !


    :

    2sc2501 - .
    ,
    2sc3162 2sc4051 but11a
    450-500 ,
    40
    3
    1


    :

    2sc2307 .

    buv48a...c
    48 - .
    250-300 W (ibm pc-286)
    2sc2625 2sc3277
    150-180
    1000 U
    30 .


,

: 1 (: 0 , : 1)

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    vova2222
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    maks50
    : 2
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  4. -
    dr.billy
    : 17
    : 07.08.2009, 13:56
  5. : 16
    : 06.11.2008, 22:06

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