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  1. 73's de Edd

    My Livio Internet Radio won’t power on

    Sir Wawaslipshod . . . . . . Just from the aspects of what we CAN see there. How about taking DC voltmeter in hand and set to the greater than 12VDC dc range and black negative lead to the metal shield box at top center and then red probe test and log down the voltages being at the 3 lead...
  2. 73's de Edd

    Extract firmware of an old electronic toy

    TSC2300 series are Resistive Touch Controllers with Audio interfacing The TMP50C40 is a Speech synthesizer chip TI is the data source
  3. 73's de Edd

    Dual charging

    You started with the Ni-Cads or Ni MH and then also included the Li Ion family. The latter needs critical current and voltage monitoring. They are rated at 3.6 VDC but will creep up slowly from lower than that nominal value whle charging. If they happen to reach somewhat above their critical...
  4. 73's de Edd

    Comedy Thread

    I was at the bar the other night and overheard three very hefty women talking at the bar. Their accent appeared to be Scottish, so I approached and asked, “Hello, are you three lassies from Scotland?” One of them then angrily screeched, “It’s Wales! Wales, you bloody idiot!” So I apologized...
  5. 73's de Edd

    Rheostat - resistor ?

    Sir Mike . . . . . If in actuality, that pressure sensor is putting out a variable 0-5V, a voltage divider will put out 4.5 V for 5 V input or 4.05 for 4.5 input or 2.25 for 2.5 input . . .etc . . . But you will NEVER see 5V output again as max . . . just that divided down to 4.5V at max...
  6. 73's de Edd

    Dual charging

    You are doing fine 'til you included the "18650" They are a whole different story in the precise control needed for them
  7. 73's de Edd

    Comedy Thread

    How I learned to mind my own business . . . . . . I was walking past a mental hospital the other day, And all the patients were shouting, ’13….13….13.’ The fence was too high to see over, but I saw a little knot hole in the planks, so I looked through to see what was going on….. Some idiot...
  8. 73's de Edd

    Equivalent Capacitor for 220r16 c4 (2)

    In this situation then , I am seeing a 22ufd @16V tantalum capacitor with the stripe being the indicator for its + polarity end.
  9. 73's de Edd

    Smd resistor unbelievable

    Sir bushtech . . . . . Oh yes . . . . those are being the common as dirt military and aerospace designs workhouses . . .SM versions of 2N2222A and an occassional 2N2907A thrown in as its PNP counterpart / twin. Of those resistor codes you gave, the 01A . . .100 ohm . . . is the only...
  10. 73's de Edd

    ST. VN05N component

    Go for the old stock OEM's . Also there is not much power on the 25 pin connector, but from the aspects of environs and vibration . . . a good preventative maintenance would involve a good fresh solder addition and flow soldering of all of the 25 connectors on both sides. Their factory job...
  11. 73's de Edd

    Saxophone Switching Logic

    Sir Mike Lansing . . . . . Well first off lets enhance your research learning curve. INITIAL main point of interest is IF the unit is being available as a PDF . . . so o o o o o o PDF and then plus + . . . . . for additionally related info . . . . within a specific closed range of interest by...
  12. 73's de Edd

    Equivalent Capacitor for 220r16 c4 (2)

    My interpretation from just what you give . . . . that it is from a list of components used in a piece of equipment. The unit being a 220 ufd (not expecting that r) 16VDC rating capacitor, with it assigned an identifier of C4 on the units schematic. The (2) being that there are 2 like rated...
  13. 73's de Edd

    K10A60D Transistor

    Sir Sacha100 . . . . . I am still not convinced that I should be getting current of 131 volts from the heat-sinks marked in red to the ground casing. to me this is some kind of leakage. I think that will prove to be only a mere STATIC voltage and not a DYNAMIC one . . to confirm . . . have a...
  14. 73's de Edd

    Smd resistor unbelievable

    Sir bushtech . . . . . I am now reading the foil paths converging into that part in question, but it seems that they tie into transistors that are being different from the schematics given ones. The schematic gives drive shunting / supression transistors Q19 and Q21 being related to...
  15. 73's de Edd

    Psu amperage output at 12v

    Your video is the same one as before. What is there not to understand about the . . . .RED/BLUE photo . . . you just get a 15 or 25 ohm power resistor and put your DVM in the 1 ampere DC current range and meter at the shown test points and power up only long enough to get a meter reading...
  16. 73's de Edd

    Smd resistor unbelievable

    Still not good enough resolution . . . at the example below . . .to make out the two relevant foil paths even at this mag level. . .needs mo' pixel content. See if you can come in closer to encompass only the RED square, as I don't think that the paths will extend out of that area. MAX...
  17. 73's de Edd

    Massage Chair Hand control Problem

    Sir Jim Bunting . . . . . You certainly HAVE to give us the the brand and model involved or else its as cryptic and involved as your telling . . . . . . . That aspect was solely being relevant to our not having been given the brand and model of unit. I think that the crystal frequency is...
  18. 73's de Edd

    Smd resistor unbelievable

    I didn't knows that they had United Parcel Service over theres ? Can you come in closer on the whole foil side of the board . . 2X . .3X . . .4X as nothing can be made out / worked with from the present pixel density of this photo...
  19. 73's de Edd

    Part Indentification On Casiotone Ct-640 Keyboard

    Sir Frederick65 . . . . In seeing that pic , your unit is newer and has a separate power inpit at the black connector to the left. Its also at a MUCH lower voltage . What you then have yourself there, IS a dual .0022 ufd ceramic capacitor with its common center lead BUT with some additional...
  20. 73's de Edd

    Part Indentification On Casiotone Ct-640 Keyboard

    Sir Frederick65 . . . . . Wherefore art thines forthcoming photos ? See if this Casiotones power supplys construction is being about of that older vintage and methodology of construction used for your unit . The separate main power transformer is being the YELLOW star unit to the left. I...
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