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  1. 73's de Edd

    Looking for a 12v 3.5+A MOSFET

    "Put me down for whats behind door # 3" I guess that Canada does not receive "The Price is Right" TV program . . . .or you have just never watched it. My choice is referenced, . . . a la the given URL addee . . . . particularly liking the low level gate drive required and a decent Rds on spec...
  2. 73's de Edd

    Yamaha RX - V 675 wont power up

    . Sr Fernandes . . . . . Seems like to me that the most likely fault is an overload created by the enormous power audio amplifier section***, and thereby prohibiting an initial powering up. ( *** . . . . aka . . . .A seção de amplificador de saída de áudio potente ) Consult the voltage...
  3. 73's de Edd

    Looking for a 12v 3.5+A MOSFET

    Put me down for whats behind door # 3 http://www.digikey.ca/scripts/DkSearch/dksus.dll?Detail&itemSeq=189591108&uq=635906524369115920 73's de Edd
  4. 73's de Edd

    Flyback pins

    pidja . . . . . . I don't actually see your situation, as one would just typically be installing a new unit in the same holes as an old one being replaced. HOWEVER . . . . . my seventh sense makes me want to think that you are wanting to utilize the unit as a stand alone, "Mad Scientist"...
  5. 73's de Edd

    Attaching a Ultrasound HC-SR04 unit

    . Sir . . . . . .8bit (What ? you haven't progressively upgraded to 128 bit. . . . . .you have been loosing some serious crunch power in the interim.) Strange . . . but those two diagonally oriented, same size holes, could accommodate at least 4 different digressing gauges of fasteners...
  6. 73's de Edd

    Making new AC DC transformer for La Z Boy chair

    . Sir jonawald. . . . . . Lets just call the situations equal . . . as I was having like difficulty in picking out ALL of the connections on that perf board construction of yours, since I only confirmed 95 % of it with another 5 % having a possible error factor at the corner Molex...
  7. 73's de Edd

    Help! Transistor radio converted into amp

    . Mme Soulwyvern84 . . . . . . . . . . . . Since plastic warps and bends due to the tensioning exerted by spring loaded batteries . . . .you can still get replacement holders . or you could also have a problem with caustic eroded contacts . . . . damaged beyond easy repair. So look and find...
  8. 73's de Edd

    4 digits digital watch Freezing last number - Is that possible???

    ADDENDA: At two points in the discussion I mentioned the tens of minutes portion of the display as being " tenths of an hour", and of course, with 6 minutes time segments being tenths of an hour. But the display and updating of the tens of minutes digit is accomplishing the mentioned : "...
  9. 73's de Edd

    Diode J46?

    Nigel. . . . . . Am I the only one getting a correct reading on that diodes numbering , just BECAUSE my dyslexia IS kicking in. What I am seeing are J645-1 Aerospace and Mil Spec qualified silicon diodes, being premium derivations from the old workhorse 1N645 diode lineage. Its having a 225V...
  10. 73's de Edd

    4 digits digital watch Freezing last number - Is that possible???

    . Sir Yomastoz. . . . . . How are things in Estonia !. . . . Might I assume that you are needing time displayed in tenths of an hour . . . . like I spent 4.1 hours on this job at $50 per hour so my billed fee will be $205. Also if your unit in question is indeed the ONE BEING SHOWN, it is...
  11. 73's de Edd

    Making new AC DC transformer for La Z Boy chair

    . Sir jonathon . . . . . . Well the first thing noticed on that transformer shown is the AC line spec of having that 2.5 amp fuse on the AC primary . . . its loooooooking gooooood ! This must be from a Japonie . . . . . Matsushita family of product, being salvaged from one of those first...
  12. 73's de Edd

    n-mosfet replacement on Qnix lcd monitor

    . Sir . . . . . .ATM Cramped for time now . . . .but rosin flux up the two small gate and source tabs and lift them up free of their solder pads at the board. Now, to remove that larger drain tab, also wet its big tab down with rosin flux and check to see that your . . . .hopefully . .50...
  13. 73's de Edd

    help in fixing national panasonic stereo model RX - F80 - 2

    pharaon . . . . . . Its certainly looking like that when when the Tape - Radio slide switrch is moved in the direction of the earphone jack, that 3 VDC being switched to connector 2 from 1 is what makes the radio play. Unfortunately, as you have found, the tape player didn't work, to...
  14. 73's de Edd

    Making new AC DC transformer for La Z Boy chair

    . Sir jonawald. . . . . . Looking at the spec plate on that linear actuator /screw drive/ "Deltadrive" it sez it will be consuming 24 VDC @ 2.2 amps. Dropping down to your #23 post you say: One problem. The transformer I used seems to be a bit weak. The recline and restore are very slow...
  15. 73's de Edd

    Panasonic SA-PT660 power issue?

    . Sir Xander . . . . . . Your findings so far has confirmed your units frontal portion is good down to my GREEN line of demarcation. Do you now have your stamped and validated learners permit, as this troubleshooting / analysis might be quite involved, with it being one quite hefty power...
  16. 73's de Edd

    Amplifier Repair - electrolytic capacitors expose metal top?

    looxuser . . . . . . . . . You are exactly right on your drawing and technical supposition. The reason I gave such a variance of the coupling capacitor value was your possibility of having to look hard just to find ONE of those capacitor values. Sounds like your dad might be looking up at...
  17. 73's de Edd

    Help! Transistor radio converted into amp

    . Soulwyvern84 . . . . . . You say . . . . " I have about 5 different ones I want to convert. " What 'cha trying to do there . . . . start up a little cottage industry ? And is an adjunct KickStart funding about to be evolving, therewith ? You would be wanting to use the radio with the...
  18. 73's de Edd

    n-mosfet replacement on Qnix lcd monitor

    . I believe that I can tell you exactly how to correct your problem you created with the PCB foil delamination.. As you can see, that whole quarter section of the pcboard has its foil left on it, to serve as a heat sink to carry the heat away from that/THE power CMOS that has its tab...
  19. 73's de Edd

    UPS Failure

    Peter , Looking at the date codes of the components used, I also am concurring in seeing a 80-81'ish vintage of initial manufacture, as a 90-91'sh time frame would have typically seen more complete total design functions in a chip utilization. To find out for sure how hard the battery is hit...
  20. 73's de Edd

    Hack Basement Watchdog Water Alarm

    . Sir backporch . . . . . " . . . . . . I can hear it clicking away" That's telling us that the relay is pulling in with 9V successfully, and that the test is being without the Piezo activated. Now just try the simplest A.K. suggested potential solution of having the relay STILL with its...
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