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  1. 73's de Edd

    Adjustable frequency PWM, need to further adjust frequency (HELP)

    . . Sir supak111 . . . . . . . Will adjusting the frequency mess with the output voltage at all up or down? This unit should be giving you a full logic level LO-HI from its supply . . .at all frequencies. And one other thing, I'll be driving this by 12v, my solenoid right now it 12v...
  2. 73's de Edd

    Defective PCB/scroll saw

    Looks like the transformer is pooched. Old board 120vac in 6 out. New board 120vac in 42.5 out. "Dat don't seem wight to me . . . no . . . dat just don't seem wight to me" . . . . .a la Junior . . . . . of Red Skelton fame. 42.5 . . . . . .even unloaded . . . . for the amount of...
  3. 73's de Edd

    Defective PCB/scroll saw

    . Sir KTW . . . . . . . I certainly would not be expecting any AC on those test points, just pure-pure DC. You can see the little square 4 pin cased bridge rectifier on the low voltage side of the RED power transformer, then it dumps into the LARGEST electrolytic in the board, a short...
  4. 73's de Edd

    Defective PCB/scroll saw

    . Sir KTW . . . . . . . You sez . . . . .The brown ovals are indeed for a potentiometer (variable speed saw) (The BROWN marked connections are receiving the red wires going to the separate SWITCH that is mounted on the very BACK of the pot ) CIRCUIT ANALYSIS: The orange connector is...
  5. 73's de Edd

    Help my TV

    Sir Thangza . . Since I see no CRT based schematics readily available on AKAI TV's. I am using the only chassis photo that I can find, but I did have to crop out a dump of camel dung on the right upper area of the pounded ground. I guess that they had to get good photo lighting outdoors . ...
  6. 73's de Edd

    Defective PCB/scroll saw

    . Sir KTW . . . . . . . You sez. . . . . . . . . Just on my way out the door for the day but I'll get back at this later tonight and tomorrow. . . . . . . . . ( Using my best quizzical foreign accent . . . . .where you go ? where you gooooo ? ? ? ) Answering your very last...
  7. 73's de Edd

    Comedy Thread

  8. 73's de Edd

    Comedy Thread

  9. 73's de Edd

    Repair UPS Santak

    . Sir troiuuuu. . . . . . . ( But not Troi oi ? ) The very MOST common fault of that and UPS's in general is the degradation and capability of the unit to still provide full voltage and current drain capabilities from its battery after years of use. Pull the covers and take a voltage...
  10. 73's de Edd

    Adjustable frequency PWM, need to further adjust frequency (HELP)

    . Sir supak111 . . . . . . . The specs tell us that the unit can work on down to 60 cycles with .1 ufd and 200k used as the RC time constant values. You probably don't have the instrumentation capability of reading that C1 chip capacitor that is now present in the unit. So initially, use a...
  11. 73's de Edd

    Adjustable frequency PWM, need to further adjust frequency (HELP)

    . Sir supak111 . . . . . . . Velly . . . velly . . . . strange . . . . they must have made a production change, as they are using a BLUE 2 megglingohms trim pot . . . .err . . . .rheostat on the board, whilst the schematic proper was showing a 1 meg trim pot with an adjunct 1K series...
  12. 73's de Edd

    Comedy Thread

  13. 73's de Edd

    Dell adapter down!

    . Sir bmdiyh . . . . . . . (Boy . . . sure looks like you need to buy some more vowels for your name . . . . y en Espanol tambien. ) That looks to be a knock off of a 3.15A --250V Belfuse . . .chemical fuse . . .which purposefully has a slow blowing action. With it having blown . ...
  14. 73's de Edd

    Substitute for ELNA capacitors

    Sir Zapper . . . . . . . (With that name . . . . .be sure that you don't get those suckas installed backwards . . . polarity wise . . . .or your namesake will hold true .) With your given product to be serviced and assuredly those values going into its switchmode power supply. Whatever...
  15. 73's de Edd

    PANASONIC KX-TG2570 - 2.4 GHz Cordless Answering System - My handset display says "Out of Range"

    The "general" Panasonic condition was also considered here in this old post at this site: https://www.electronicspoint.com/threads/panasonic-cordless-phone-out-of-range.45588/ 73's de Edd
  16. 73's de Edd

    PANASONIC KX-TG2570 - 2.4 GHz Cordless Answering System - My handset display says "Out of Range"

    Megglinghurts: See if these two little tid - bits of info on your unit help you . . . . . .: http://www.manualslib.com/manual/303866/Panasonic-Kx-Tg2570.html?page=50#manual http://www.manualslib.com/manual/303866/Panasonic-Kx-Tg2570.html?page=65#manual (With due consideration that this...
  17. 73's de Edd

    PANASONIC KX-TG2570 - 2.4 GHz Cordless Answering System - My handset display says "Out of Range"

    MHZ go back and catch my add on . . . . . . to my POST # 17.
  18. 73's de Edd

    PANASONIC KX-TG2570 - 2.4 GHz Cordless Answering System - My handset display says "Out of Range"

    Sir MHZ . . . . . . . Ohhhhhhhh Noooooooooo . . . .NOT the no - tory - us . . . . . Puny-sonic " out of range" syndrome ! This is being page 14 of 14...
  19. 73's de Edd

    Converter for 115VAC, 60HZ to 230VAC, 50HZ sine wave up to max. 100Watts.

    . Sir Jos van Doorn73. . . . . . . Initially referring to the : And thereby, the "gas heated", disqualifying the MUUUUULTI kilowatts being required for a heating element. Check out these possibilities: Instead . . . the need of a typically 24VAC gas control valve . . . . . and the...
  20. 73's de Edd

    joined/connected pads

    Sir Cart . . . . . . . . Since you posted when you just had only three parts on the board . . . . . At that point in time of the comparison, you had not yet shown us the fully "stuffed" board. I thought that you were sharing mounting holes of the D2 diodes wire and the down the power...
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