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  1. 73's de Edd

    Hp laptop adapter fail

    Sir pharaon . . . .et al . . . UNTIMELY UPDATE: With our Right Honourable, Revered and Esteemed DAVENN . . . is going to say this, having already said this , or wanting to say this . . . or LIKING my having said this . . . . . I do now believe that the PA-1900-05 schematic which I have...
  2. 73's de Edd

    Help Please Harman Kardon Balance pot Wanted

    Sir 6six6 . . . . . with your additional submitted photos Now I ask you . . .doesn't that front panel just exude subdued elegance ? Also, I had just about forgotten about the presence of offset plastic actuator rods for the Schadow slide switches. You sez . . . . just in case i need to...
  3. 73's de Edd

    Horse Racing Derby Game Electronics Help

    Sir MikeAtencio . . . . . Hopefully, you used to work at Radio Shack . . . .'cause I'se gots questions ? Do you intend on physically replicating that on a somewhat smaller scale ? Plus, it seems only logical for a sencond unit in order to have a race, unless workung against a timing of a run...
  4. 73's de Edd

    Ionizer vs. static noise

    That is what you smell after a close lightning strike, or if working with electricity and arcing or sparking or electrical contacts arcing occcurs . . . once you smell it . . . . it's sort of locked in your olfactory memory and you don't forget it.
  5. 73's de Edd

    Ionizer vs. static noise

    Test . .of intensity: Place your thumb right up against for about 15 seconds and then rapidly retract to see it you smell ozone odor from it. If not . . . . . its not a severely intense field.
  6. 73's de Edd

    Error in electric linear actuators and limit switches

    Sir dodulation . . . . . I just wildly guesstimated the systems actual function . . . . Could as equally be a quail eggs incubator. The action I visualize here is that the system is initially being show in its dormant state, and the S1 thermostat not receiving a high enough ambient air temp...
  7. 73's de Edd

    Help Please Harman Kardon Balance pot Wanted

    Sir 6six6 . . . . . As Davenn said, it is a dual pot ..... This referencing does positively confirm that a counterpoised 50K dual pot is serving as the Harmless Kardon HK725 units balance control. NOT that you are CONSTANTLY using that adjustment every day. I’ll just bet that your problems...
  8. 73's de Edd

    Ionizer vs. static noise

    Yup . . . . you are starting to encroach upon corona range . . .
  9. 73's de Edd

    problem with desoldered buttons

    If my problem to solve . . . . my choice would be the totally isolated interfacing provided by a reed relay. Each unit would be mounted vertically in the former pad center . . . and they would stick up no more than the height exhibited by the existent GREEN Euro terminals over to the side...
  10. 73's de Edd

    Interfering circuits

    Sir Val . . . . Since the 555 circuitry is pulling but a mere 11 and 9/17ths ergs, why not drop in a 220 / 330 / or 470 ohm isolation resistor and filter with a 100ufd at the 555 pin 8. Then see what the difference is . Is there any introduced capacitance from your hand at that pot or is a...
  11. 73's de Edd

    Interfering circuits

    If the 555 circuitry is not even powered up is there being that instability problem? Is there a good shielded pairing involved in the RCA connectors if being remoted off the board? I hope that the pot is not being remoted off the board. 73's de Edd
  12. 73's de Edd

    What is this part

    Sir Joebrad27 . . . If it was given to me and for me to use. I would consider the housing size, along with the markings on the faceplate and the illuminated power switch. Then use it to build or install either a varaiable speed control or a temperature adjustment for one of my standard 60...
  13. 73's de Edd

    Wiring of a radio's power supply

    Sir Richard: OK . . .then . . . if D7 tests good, proceed in installing it where it belongs . . . with PROPER polarity. And if you have changed C420 and C418, hopefully they were 25VDC rated, talking care of our inherently higher transformer voltage, all will be well. Won’t need to resort to...
  14. 73's de Edd

    What is this part

    Sir Joebrad27 . . . . . Dammmmmmn . . . . Joe . . . . you rated a reply from both EINSTEIN and 'ole Numb-nutz here . . . . I am not particularly seeing 3A principal power devices on that board, with the sole two heaviest discrete power items being the two metal film resistors , one of...
  15. 73's de Edd

    Wiring of a radio's power supply

    Looking at your actual schematic of the found wiring / circuit conditions in your radio, by referring to post number six .There is being no Zener diode at the junction of the 220 and 1 ohm resistors, therefore your collector to to base route is turning T16 transistor FULLY into conduction...
  16. 73's de Edd

    Motion sensing mouse trap

    My version had the meece tripping by passing thru separated laser diode( run at low power) and its separated sensor. The front entry door was . . .guillotine style . . .vertically mounted aluminum sheet in 2 grooves and held up with cotton twine, but that twine passed thru a loop of...
  17. 73's de Edd

    Insignia TV won't turn on

    Sir "Kilgore" . . . . . . I was just about to ask for as good of a photo as my post # 6 is providing, but being shot of the FOIL side of the board. I initially got with you as far as the main filter capacitors and their having the required 165 VDC out from them. Brief Operational Synopsis...
  18. 73's de Edd

    Help Needed on Project

    Sir Darren Matthews . . . . . Examine below and see if it accomplishes what you said that I think that you said was what you said . . . get the idea ? If the two sources can share a common ground / cold line, as is drawn in as the very bottom.line. Normally the bottom INPUT 240AC source...
  19. 73's de Edd

    Wiring in Recaro seats, need guidance from experts

    Sir Michael. . . . . . . . Beemer wiring diagrams covering your vintage and particularly heated seats aspects are rare birds. Even your submission and mine are differing on the wiring color codes. http://i.imgur.com/9GhRL66.png Black Red trace and Black Green I suspect to be minor...
  20. 73's de Edd

    Hp laptop adapter fail

    Sir pharaon . . . . . Ahhhhhhh . . . yes their design must have the two N-FETS arranged in series and the higher voltage rated unit is connected closer to the 330 VDC source, with the other one being below it to ground. You certainly did a good job in getting the white silicone rubber...
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