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  1. 73's de Edd

    Seeking help with 12v dc motor controller on golf buggy

    ALAS, no . . . .the pin out on your specified relay has the coil PCB connection pins being located 180 degrees across from each other. On the oKo relay the coil PCB has both of its coil contacts being spaced apart side by side on one side of the relay . . . thus . . . its being a wierd duck...
  2. 73's de Edd

    Mouse Logitech G100s left click not working [very complex]

    So I connect together White and Green with a wire, and then i put another two wires to R1 left and R2 left? No, you do NOT connect together White and Green . . . .that would short together and cancel out your digital + and - signals. Two separate jumper wires are to be used . . . . One...
  3. 73's de Edd

    Mouse Logitech G100s left click not working [very complex]

    Sir Sikorsky . . . . . You say . . . There is no connection between GREEN pin to BOLD A and GREEN pin to BOLD B, ohm meter shows 1 its open circuit, no connection at all There is no connection between WHITE PIN to C4, C3, R1, R2... No connection at all with white pin, same as no connection...
  4. 73's de Edd

    Audio Marantz PM500

    Sir eytonbranhan . . . . . If your power supplies outputs are ~ +25 and -25 at those stages that they feed, and are being there, all must be well and in accordance to this CORRECTED power supply print at the bottom. My suspicion is . . . . You have QF3-12 which are arranged in 5 sets of...
  5. 73's de Edd

    Seeking help with 12v dc motor controller on golf buggy

    Indeed the " Collar" is being a split ferrite toroid which is detecting higher current flow thru the negative motor lead which it surounds . The induced magnetic field therein is being proportional to the current flow thru the wire, The magnetic field is further concentrated between its gap...
  6. 73's de Edd

    Stumped on this circuit blinking led with 1 transistor

    This is just his learning experience . . . . . just as . . . . .61 years ago, I knew that I could use the base-emitter or base collector junctions of silicon transistors as LOW power zener diodes, by using the same technique.
  7. 73's de Edd

    Seeking help with 12v dc motor controller on golf buggy

    Sir onedog . . . . . . Au contraire ! . . . . .I find only one fault in the original post . . . being its very end pic. As for the initial . . . . . . . " and behaved itself until 100M down the first hole whereupon it took off by itself " I would have absolutely loved to have seen that ...
  8. 73's de Edd

    Stumped on this circuit blinking led with 1 transistor

    Sir stspringer . . . . . . In that circuit, its "IFFY" situation is being the specific / chance selection of NPN transistor that you choose to use in the circuit. All of the spec books on transistors are carefull to give the maximum voltage that you can use from the collector to emitter...
  9. 73's de Edd

    Mouse Logitech G100s left click not working [very complex]

    " Also down at the RED lines +5Vdc input there is an R3 . . . 2R2 ohm . . . ( leaded ) SM resistor that . . . . . ." Additionally . . . . . " AND on my provided photo I can plainly make out a thin foil trace that is where my short BROWN mark in is." Digital processing induced a color...
  10. 73's de Edd

    Mouse Logitech G100s left click not working [very complex]

    Sir Sikorsky . . . . . INITIAL OBSERVATIONS . . . . On your best relevant photo, I was only able to make out much other than the scraped area that you created, thus, confirming that there wasn't being any foil path hidden underneath the WHITE silk screen resist ink in that immediate area...
  11. 73's de Edd

    Yamaha HTR-5450

    BUT . . . .Have you powered up and taken A DVM and checked those DC voltages at those 5 TEST points . . . .and what were they reading ?
  12. 73's de Edd

    Yamaha HTR-5450

    Sir carlosraj7 . . . . . If you have the manual at hand, check on ADOBE page 48 and drop down to the Rear left amp and refer to its mark up, as its small VIOLET squares being used, are less invasive of blocking the view of the schematics wiring traces. Note the distintive dual 2.2 ohm...
  13. 73's de Edd

    Need Premier Massage Chair Wall plug. Help!

    Mme Camilla1 . . . . . All right . . .lets go for an exploratory ride . . . . put your foot in a stirrup and boost yourself on up behind me and HOLD on tight, don't want you falling off on me. Refer to the 2 photos placed just below . . . . .. FROM SERVICE MANUAL Now look a the top and...
  14. 73's de Edd

    Can someone help me sort these 2 hot resistors ?

    REJOICE ! . . . . . now . . . . . Let there be music . . . .
  15. 73's de Edd

    Bose wave audio System

    Sir Roger_G e e e e e e e e e From what has been told to me by your post, see if this info fits your unit. Also I can differentiate even further, by knowing if your back up battery is using 3 cells or a 9 V battery. The unit is using a conventional no frills power transformer that generates...
  16. 73's de Edd

    Can someone help me sort these 2 hot resistors ?

    Sir Sillencio / quiet . . . . . . . . Referencing to your photo #1 . . . You have two sets of two power transistors arranged across the top, being mounted to the heatsink. There is an associated 0.22 ohm @ 5 W ceramic cased resistor below each power transistor. Of those . . . . the 2nd...
  17. 73's de Edd

    Technics SL-PD827 stuck open

    Sir Gibgrant . . . . . I'm looking . . . . . .even harder now ! . . .my eyes are straining . . . . . REFERENCE . . . . https://i.giphy.com/media/GQI382aMVej0k/200.webp (MAN ! That's being one uggggg-leeeeee maternal copulator ) I just can't make out ANYTHING on that relevant photo of the...
  18. 73's de Edd

    X2 extreme automotive battery charger repair

    Sir Mr.wyer . . . . . I additionally wholeheartedly concur with our honorable . . .( or would that be honourable ?) . . . and esteemed Bluejets . Your examination of the wire gauge used on those two windings and the continuity slants to the repair being solely one of a "humpty dumpty" type...
  19. 73's de Edd

    Hisense H49M3000 49" Smart TV - Burnt Zener Diode - Replace Diode or Circuit Board?

    Sir CronaB . . . . . Now THAT'S the type of problem / failure that one likes to see happening . However, that is NOT a zener diode but instead , being ONE of a set of 4 fast switching diodes that are on the output of that T901 transformer, located just below them. Take ohmmeter and check all...
  20. 73's de Edd

    Beware of tunnels in Greece

    I,m equally as well impressed by those adjunct TALL light poles and any need to change out their " lite bubs ".
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