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  1. 73's de Edd

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

    . Sir pharaon . . . . . . . . Looking at your photos, but without further feedback from you, it looks like the long coiled up red (positive) and black (negative) wires would be your battery input to the board. You tell us the battery voltage now. ( *****) Is your thought, for the radio not...
  2. 73's de Edd

    Help removing pins from ECU plug

    . Sir Hughy . . . . . . . . . . Even with its wire pulled off at the rear , one should still be able to get a straightened small paper clip passing in thru the FRONT of the connector to then be physically stopped at the retained wire crimp. Then it will be possible to frontally push the...
  3. 73's de Edd

    Heathkit IP20 Power Supply

    . Sir modifier . . . . . . . . Why 'soitanly But keep a finger moving to the x4 transistor case, for an ongoing temperature check, in case you end up pulling some serious wattage thru the supply and get the X4-5 transistor pair warming up a bit. 'ole Germanium transistors gain parameters...
  4. 73's de Edd

    Simple inverter circuit

    . Sir pidja105 . . . . . . There certainly must be an error in your "three hundred and ninety AMPERES" specification from the use of a car battery. Which only in a fairy tale would convert up to 220 V @ 21 amperes at a mythical 100 % conversion efficiency rate. We got the proper sizing...
  5. 73's de Edd

    Help removing pins from ECU plug

    . Sir Hughy . . . . . . . . . . See if using this procedure, on that family of connector, will let you remove a terminal. 73's de Edd .
  6. 73's de Edd

    Koford (Slot Car) Bench Power Supply Project

    . Sir Chad . . . . . . I'm tuning in late on a quite progressed thread . . .BUT . . . . By using creative thinking to "get your money for nothing and your chicks for free", you could save yourself some of your "hard earned munneys" and use your already " paid for" . . . . . .and quite...
  7. 73's de Edd

    Amplifier Repair - electrolytic capacitors expose metal top?

    . Sir looxuser . . . . . . Are you having display problems on that unit . . . . . .as -VFL is a negative supply voltage for florescent display power for your unit. Referring back to the mentioned 33VAC, it feeds into D511 to create a NEGATIVE supply that then passes into a series pass...
  8. 73's de Edd

    Possible capacitor identification.

    . Sir Logi Devon . . . . I initially placed the URL for your reference, but by your being in the UK a good preference would be NW of London at High Wycombe at Mousers, with their no minimum order and reasonable shipping. Like I said, use a unit with an AC voltage spec rated between 130 V on...
  9. 73's de Edd

    Possible capacitor identification.

    . Sir Logi Devon . . . . You makee everything go boom-BOOM! You have just discovered an AC line, metal oxide varistor, put there to capture and blunt out short ac line spikes. But in your case of such severe-severe abuse, they just 'splodes. For your line voltage I usually expect a 130 v...
  10. 73's de Edd

    How do I repair my monitor?

    . Sir Citizen . . . . . . . . . . . . . . . (Kane ? ) Do you have any techno expertise . . .specifically . . .minimally . . . having a DVM or VOM for taking readings, along with being able to read a schematics test points. Preliminary monitor troubleshooting: With the monitor hooked up to...
  11. 73's de Edd

    Help! Repairing water damaged PCB from Massage chair.

    . . Sir Jonathan . . . . . . You're certainly lucky that the presence of board symbolization let you CORRECT your self on the erroneously high values of resistors that were being there on the gate drive line to the triacs as well as the input sides of the MOC O.I.'s. Your LEG up/dn and...
  12. 73's de Edd

    Rotating motor direction

    . Sir Pharaday . . . . . . . On that type of AC synchronous motor that you are working with , and its indeterminate start up direction, look at the center duplicated pic to the right and note the motor rotors 16 separated iron pole pieces and companion alum-i-nin- ni -yum- yum...
  13. 73's de Edd

    Help a blind man in electricity

    . ME TOO ! ! ! . . . . . . I once was technically blind also . . . . . . . . and I'm still deaf and dumb . . . . . 73's de Edd
  14. 73's de Edd

    Anyone know how to change a song saved in this circuit

    . Sir . . . . . . . 'po man on a . . . . . . Tightbudget . . . . . That all depends upon the numbers that you feed back to us that are on that 14 pin IC chip.' You provided a good close up but I am still not seeing its top numbers / I.D. . If the audio playback is just a tune it is probably...
  15. 73's de Edd

    Need help selecting components for solar a battery charger.

    Sir Simon . . . . . . " I want to make a single cell AA solar charger that can charge a single AA 1900mAh eneloop battery in English winter time, So that's about 7hrs light per day. " I gots to knows ? What is this light source type, and its voltage current specs, that you perceive is going...
  16. 73's de Edd

    Schematic needed for Sprague Mike-O-Meter

    Sir jimmie . . . . . . Should you be the party of the first party . . . twice removed . . . .that successfully exhibited the techno expertise to have repaired your Micronta / Radio Shack meter in another thread. STOP the presses . . . .I now remember that you are being "mcgyver2822" . . ...
  17. 73's de Edd

    TASCAM 22-4

    . Sir GYITARMAN . . . . . . .(SHOUTING) . . . . .can you hear me now ? Sez: "every tape that I have tried to play plays backwards" I say: How you do dat ? ? ? ? Its only been a hunnert years, since my eyeballing one of those . Its BIG brother with full 10.5 inch reels turning , was...
  18. 73's de Edd

    Weller PU81 Soldering iron

    . Mrbiccies . . . . . . From the sacrosanct words of Weller . . . . . . The use of precision Platinum (RTD – Resistance Temperature Detector) Sensors (WP80 / WSP80 / WMP, etc.) in the Soldering Handpieces, constitutes extremely long life while providing highly accurate temperature...
  19. 73's de Edd

    Corning PC-620 120V 1113W Repair

    ADDENDA: 73's de Edd
  20. 73's de Edd

    Corning PC-620 120V 1113W Repair

    . Sir East Coast Toast . . . . . . . My . . . My . . . My . . . . . I am surprised in your not coming up with a minor rotor adjusting in getting that CTS pot fully functional again. Let me give you some more precise details. Note that I am using the solder ring terminals vs your pcb...
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