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  1. dorke

    Please help a noob with setting up a TinyCircuit with two motors and two solenoids.

    Let's start with the part numbers and datasheets of all the components you want to use.
  2. dorke

    555 in astable mode

    You attachment doesn't open. Try loading again. A pic of your actual build, and of the scope screen
  3. dorke

    Help! Repairing water damaged PCB from Massage chair.

    I'm here. some other things: Where is the "display" located? where is it connected to? Where is the remote(wired?) connected to? Are there any buttons on the chair or it is entirely operated by the remote? Please show on the board.
  4. dorke

    Temperature and Thermometers

    1.If by "scales" they mean Celsius and Fahrenheit the answer is -40F=-40C 2. Not so clear: "what will be the temperature indicated on the resistance scale? "
  5. dorke

    Remote signal

    If learning is what you are seeking ,go with an arduino board. Lots of ways to get assistance with that including here. I
  6. dorke

    Connecting XRT6164 to FPGA

    Man_G, Your question is totally meaningless...:(
  7. dorke

    Help on finding a DVD player that does surround sound

    Try asking Panasonic for a manual/cable you need,here
  8. dorke

    Repairing Ribbon Cable.

    Theoretically YES practically NO... There is almost complete certainty they don't match in any parameter possible.:(
  9. dorke

    Help! Repairing water damaged PCB from Massage chair.

    I wouldn't try to change the Socket (all of it or some pins ) yet, just clean it the best you can. The main issue is deciding if the IC is Bad or good. I do think it is Bad, but not yet 100% sure. You say it is partly working - display is changing when you press something,was this this...
  10. dorke

    Help! Repairing water damaged PCB from Massage chair.

    O.k. So basically the same as in the board ,with #4 open(O.L) not 0 ohm. Don't sure what to make of the differences between the pins ohm measurements now. please measure IC pin 2-6, ohm test to gnd ,what do you get? I would do an ohm test at the socket with the IC out ,like that: Board GND...
  11. dorke

    Help! Repairing water damaged PCB from Massage chair.

    Well, Bluejets has a very good point. So, without the Ic your are getting O.L(open circuit) on all 4 points? You cleaned The IC but it's legs are very corroded. Clean the socket and under it as well. Please check the following points on the IC itself to GND (ohm test),as on the pic what do...
  12. dorke

    Help! Repairing water damaged PCB from Massage chair.

    Just repeat the Ohm test with the Ic out.
  13. dorke

    Help! Repairing water damaged PCB from Massage chair.

    O.k so #4 is shorted to GND. Do you know how to remove the IC from it's socket (have you ever done such a thing?).
  14. dorke

    Help! Repairing water damaged PCB from Massage chair.

    Yes the GND pin on the connector,and the relays order on the IC pins.
  15. dorke

    Help! Repairing water damaged PCB from Massage chair.

    Like the pic below related to GND?
  16. dorke

    Help! Repairing water damaged PCB from Massage chair.

    Relay 1, 31KΩ Relay 2, 94KΩ Relay 3, 3.6 MΩ Relay 4. 0Ω Well the spread is too large to make sense. but # 4 =0 is a short to GND and that is wrong.(Are you sure it is number 4 and not 1?)
  17. dorke

    Help! Repairing water damaged PCB from Massage chair.

    o.k so on the main board (with the controller board disconnected) we get 1= 7.5KΩ 2= 3.8KΩ 3= 3.99KΩ 4= 3.99KΩ 2-4 are fine (2x2k=4k). 1 is wrong ! needs checking of resistors values near 1 with the ommeter. What do you get if you measure the same points on the Controller board(cable between...
  18. dorke

    Help! Repairing water damaged PCB from Massage chair.

    Can you please read the values of the 2 resistors near each Tr?
  19. dorke

    Help! Repairing water damaged PCB from Massage chair.

    Relay 1 is the location once populated by "the Black one" ?
  20. dorke

    Help! Repairing water damaged PCB from Massage chair.

    Can you show a poho of the DMM you use for ohm test? Are you saying that on both boards when they are disconnected from each other you are getting 0 OHM red-points to GND?
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