Search results

  1. 2andrewd

    [SOLVED]820-3024 (another) - SMBUS_SMC_BSA_SDA line droop

    I purchased this board, came fully functional aside from not recognizing battery. Looks clean, no evidence of liquid. U7000 Pin 11 3.4v stable Pin 10 SMBUS_SMC_BSA_SDA moves between 3.4v - 0.15v R5280 2K R5281 2k SMBUS_SMC_BSA_SDA is stable at 3.4v on pin 1 of R5280 while pin 2...
  2. 2andrewd

    820-3024.. Quarter turn w/ all S0 rails present before full absence

    History is a guess aside from what I see which is lack of corrosion, no real discoloration of any probe points. Trace amounts of fruit punch(?) around the base of C7119 and C7120; highly likely was cleaned before falling into my lap. it arrived naked in a lot which contained several broken...
  3. 2andrewd

    820-3024.. Quarter turn w/ all S0 rails present before full absence

    I get a short blip on mouse led as it powers on. Voltage to ground on PPBUS_S5_HS_COMPUTING_ISNS .295 (.482 on working board)
  4. 2andrewd

    820-3024.. Quarter turn w/ all S0 rails present before full absence

    No traces of liquid or corrosion. ppbus_g3h stable at 8.45v pp3v42 stable at 3.45v and green light present.
  5. 2andrewd

    820-3024.. Quarter turn w/ all S0 rails present before full absence

    Fan spins for a few seconds during which all S0 rails turn on but fall off after stopping. I've tried changing U2700, checked u7000 current sense's. What should I be looking for at this point in terms of ****_PWRGD signals etc. aside from the S0_Mains verified? Questions: 1) When moving...
  6. 2andrewd

    U6100 Popcorn on 820-3024

    Got it. I'm done here if you all are. Thanks
  7. 2andrewd

    U6100 Popcorn on 820-3024

    I was borrowing an SPI chip from one board for use in another (yes idiotic to begin with) but popcorn'ed it prior to a successful dump. Does anyone have a .bin for a 820-3024 1.6ghz 4gb? Thanks from the past.
  8. 2andrewd

    [SOLVED]823-3023 Quater Fan Spin.. Sometimes

    I changed the clock chip and solved. I don't understand why heat played a factor on.
  9. 2andrewd

    [SOLVED]823-3023 Quater Fan Spin.. Sometimes

    BTW... No sign of liquid or corrosion here.
  10. 2andrewd

    [SOLVED]823-3023 Quater Fan Spin.. Sometimes

    Just power cycles continually until U6100 area is heated, afterwards it will turn on, chime, present image etc. Is it possible I over heated the new SPI chip and is now failing as well? There isn't anything on the other side of the board that's being heated as a result of U6100 targeting as far...
  11. 2andrewd

    [SOLVED]823-3023 Quater Fan Spin.. Sometimes

    This board started out with quarter fan spin. I noticed that one of the SPI_MLB_CS_L resistors was missing and when replaced the board turned on but a day or so later the quarter fan was back. When heat was applied to the U6100 area the board would turn on so I dumped the rom thinking the chip...
  12. 2andrewd

    820-2850 SMC PID sensor error

    After replacing the garbage poly-tantalum easter-egged cap this board is stable, however... (2) errors in ASD OS... (running on a naked logic board FYI) *TsOP temp. (Palm rest test #1) "SMC could not initialize this sensor" - I assume trips because the palm rest is absent...
Top