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  1. 73's de Edd

    12 V motor loss of power

    Sir Donald Helm . . . . Can you control the speeed of the mtor at all with the pot ? If the motor is turning what would you estimate that the current speed is as compared to maximum speed ? Need the numbers from the two small plastic transistors. Also across the board from there is a larger...
  2. 73's de Edd

    CRT color TV problem

    Sir srijib . . . . . Two thoughts : You can see that the glass envelope of the bottom of the picture tube gets quite close to some of the top of chassis components when Being FULLY slid forward within the plastic rails into the set. Use a very BRIGHT light to examine to see if some component...
  3. 73's de Edd

    TV lift board replacement

    Sir Johnrobbinsjr . . . . . Tested motor with 12VDC and adequate current ? Tested motor mounted in mechanics and reversed battery polarity to test in both directions ? You say that you never had the RF remote . . . so did you hit the center photos white (RED rectangle around it ) pushbutton...
  4. 73's de Edd

    Need Help

    Sir Englishman . . . . . In the separate reads I see no mention of its having been used and mounted. So o o o o o o . . . . .what are the plans . . . . .using it in the garage, in wall mounted at about bumper height. Thus turning on an upper warning light at proper entry depth into the garage...
  5. 73's de Edd

    TV lift board replacement

    Mega-ditto . . . . Can you post a picture of the board (both sides). We might be able to determine if the unit is easily fixed. OR . . .if it is a Lift It brand. . .it has a 5 yr warranty .
  6. 73's de Edd

    How would you make a 120VAC powered beep/chime ?

    Sir Externet . . . . . Use this line powered circuit or hand fabricate a NE-2 to photocell optocoupler interface to trigger a separate LV powered beep circuit. . . . . . (I still like NE-2's and NE-51's for certain applications . ) A higher C! capacitance gives more " PUNCH " to the beep...
  7. 73's de Edd

    Looking for a highly sensitive hall sensor

    Degree of product familiarity. . . .Hall sensors I want as good of a resolution as possible, maybe .01 gauss. That would be akin to me weighing myself and then stepping up again with a turkey feather in hand and expecting a frational readout increment .
  8. 73's de Edd

    Obsolete Part Datasheet DZ71100

    Sir mityeltu . . . . . I can’t see those being other than just one watt encased Zener diodes, possibly at some custom 7 volt variant from the normal assigned bracketing values of 6.8-----7.5 VDC Zener thresholds.. How about doing a non destructive testing, using a 24VDC supply and a series...
  9. 73's de Edd

    Drill's battery not working.

    Your manner of testing should have had a 10 ohm resistor across the meter terminals / leads . Do that and go back and do a quick test of each cell and see what your readings are being this time . . . multiple weak cells , or just one ? 73's de Edd
  10. 73's de Edd

    Rolson shake torch

    Sir duke37 Your best chance on making one of those work is to use schottky diodes for the FWB, replace the existing magnet with a cluster of proper diameter stuck together silver colored niobdnium super magnets to add up to the duplicate length and just for testing use 2 series connected...
  11. 73's de Edd

    Fix treadmill

    Sir Barney . . . . . RE . . . . . . .MC2100 controller board MOTOR SPEED CONTROL VIA POTENTIOMETER ADJUSTMENT: Check out Doug’s post of 9:27 AM of Nov 2, 2015, for his demo VIDEO of an operating MOTOR unit and the circuitry being used . . . . . . NO Arduino nor bang-bang coding involved...
  12. 73's de Edd

    In search of a brain...

    Seeeenor Externet . . . .Que Paaaaaaaaaassssssssssa ? Timing almost coincident with Sir Alec-teeeeeeee, just took me extra poke up and drafting time . . . . before I finished and noticed . . . . This is considering that the "Balloon " is not either a LARGE weather balloon nor a divers "dead...
  13. 73's de Edd

    Garage Door opener capacitor replacement

    Sir jberube . . . . . . Your solenoid pin is driving a pivoting delrin plastic intermediate mechanical coupling into a power latching switch. It thereby has the power capacity to handle the voltage / power switching between motor run directions, that the small limit switches mounted on the...
  14. 73's de Edd

    Help!! Control module diode identification

    Sir Malach . . . . . How about some more info, to be gleaned from the unit . . .? Initially, the heavy blue banded end is being the diodes cathode / negative terminal end. It looks as if the diode unit has overheated to the extent that it is expelling its potting agents from each end of its...
  15. 73's de Edd

    Wahl "Peanut" Electric Razor blown

    Sir SHesington . . . . . . . I would fully expectorate that you hit the unit with a FULL . . . and that's being hea-veeeee on the FULL . . . 220/40 and it zapped the hash inductor that passes off AC to be converted to DC with the Full Wave Bridge and then goes directly into the units "Peanut...
  16. 73's de Edd

    How to get a certain duty time

    Just relating to your initial schematic . . . . . . Duke's revision corrects it . . . . Lastly is that motor so small . . .so as to be compatible with that 2N3904 driver transistor power carrying capacity . . . . . . . .that it is powering the windshield wipers on a gnats go kart ? Or will be...
  17. 73's de Edd

    Honda 3500 watt generator (rotor)

    Sir Tim Murphy . . . . . Does this agree with your unit ? Also, do I understand that the unit has been cannibalized of its generators rotor . . . . . and it is being completely missing? I am only seing a bipolar winding and one pair of brass slip rings. Techinfo...
  18. 73's de Edd

    Honda 3500 watt generator (rotor)

    What are the model numbers prefixes and suffixes . . . . that go along with that 3500 number ?
  19. 73's de Edd

    crt tv horizontal display problem

    Sir walid ahmed . . . . . You say . . . The crt tv cant display horizontally. This pic below is showing a problem with the sets HORIZONTAL CIRCUITRY or the yoke A quite rarely occurring condition . . . . . If you have the MUCH MORE COMMON problem, where the bright white line will be...
  20. 73's de Edd

    Help with Parmark Mark 6

    Sr Pedro Morales . . . . . . . . Ehhhhhhhhhhh HOMBRE E E E ! . . . . . . . ¿ Que Paaaaaaasssssssa ? Wasn't sure if that unit was battery powered, what with the pics not even showing a full half of the unit. Found a clone that revealed it to be AC powered . . .as per my first pic. I now have...
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