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  1. 73's de Edd

    Akai S1100 sampler ...bad capacitors?

    . Sir Rockreid . . . . . . Those are filters that have 3 components covered up within the potting compound and are perfectly normal looking to me. That yellow capacitor which looks to be a 3.3 ufd unit, looks to be tilted over a bit, see if it was just from being mounted that way or if its...
  2. 73's de Edd

    B & O Penta amplifier repair and Tr equivalents

    . Sir punkieys17 . . . . . Sooooooo it looks like if you place all new power transistors in this unit that you will have one matched set of old transistors to use on a ( lower power) amplifier after you get this (POWER) amplifier running again. I think that the 1302 / 1382 devices had the...
  3. 73's de Edd

    What component is this?

    . Sir KenWC . . . . . Use that existing bit of metal terminal on one end and the other full terminal tab do an ohmming out of the unit, just after initiall\y shorting out your probes to get the value of erroneous series connector and lead resistance that you will be introducing into your...
  4. 73's de Edd

    Electronics Project: Dice

    . Sir Cam Nelson . . . . . Not to worry . . . at least you got 0o and its companion D4 LED correct ! . . . . . . and that would be your correct example, for all of the others . . . . . which are now in a Russian Roulette state. 73's de Edd
  5. 73's de Edd

    Amplifier blows power fuse

    Techno -Musings . . . .. . . Well this is how it works . . . . the units initial first failure has possibly blown one or possibly two polarity/ paired diode units of the discrete FWB that are feeding into BOTH a very low resistance and low impedance primary winding of a switch mode power...
  6. 73's de Edd

    I'm new here, looking for help

    . Sir Art Johnson . . . . . That's just not being right . . . lets just see if we can correct for that injustice. With your forthcoming info, with those mystical and magic numbers I am seeing a spec of 80 degrees centigrade and a 20 degree differential swing. So would it seem that those...
  7. 73's de Edd

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

    Sir pharaon . . . . . . . The reason for the slow, yet methodical, procedure for seeking out the correct connection of the power lead to the Radio portion , was to POSITIVELY, avoid any chance of damage to the unit by applying FULL 3 volt power to the WRONG place. The use of the 3 values of...
  8. 73's de Edd

    Amplifier blows power fuse

    dataworx . . . . . . . Look at your very first photo in post 15 . . . . . . I would initially take a look at those glass clip in fuses at the end of the differential power supply capacitor banks of 3 +3 capacitors and , if they are not being blown, I would then primarily be concerned with...
  9. 73's de Edd

    Amplifier blows power fuse

    Yes 73's de Edd
  10. 73's de Edd

    Amplifier blows power fuse

    dataworx . . . . . Your referenced "transistors" are actually being a stringed out series of ten, 5 pinned, LM1875 . . . . . 20-30 watt power amplifier I.C.'s. I would initially be looking for failure fault at the 4 diodes just past the fuse involved . . .D40 and its 3 companions . Then...
  11. 73's de Edd

    Replacing a faulty SMPS

    . Sir Constantine . . . . . . . . Test your power supplies with load resistors to see how much current they can put out. Monitor the 12 and 5V supplies to see if that fluctuation that was showing , is also being confirmed on the meter monitoring. Herewith is a Magged up . . to help on...
  12. 73's de Edd

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

    pharaon . . . . . . . Looks like the long path of that BLUE line confirms that switch being associated with the Tape portion . Typically when the player is in Tape position and being in a turned on state, the electronics is working but just waiting for the play pushbutton to be pressed to...
  13. 73's de Edd

    I'm new here, looking for help

    Sir Art Johnson . . . . . . All of the Amerikanski manufactured brands that I am familiar with, all have different part number prefixes than that . The only T24's that I am seeing are being from China . . .as in : http://switch.sale.fustat.com/c1231704-automatic-reset-thermostat There are 2...
  14. 73's de Edd

    Help with solid state relays

    Sir Braeden Hamson . . . . . I went to Fry's and picked up some nice toggle switches, Give us those Fry's part numbers so that we can then appropriately asssociate the mechanicl aspects and positioning of the switch to its electrical actions. Semantically transitioning , I currently am...
  15. 73's de Edd

    Amplifier Repair - electrolytic capacitors expose metal top?

    Sir looxuser . . . . . . I was starting at the rear of the audio chain and working forward, but where you are now is way up at the front of the chain and is where we would have ended up. Thereby, you have bypassed all of the complexity of the switching involvement of the Surround Sound, BB...
  16. 73's de Edd

    Making new AC DC transformer for La Z Boy chair

    . Sir Jonathan . . . . . . Questions only this go around. Are any other boards, in addition to this wired remote, being wired into this DC supply that you just assembled ? Do you have acquaintances in the electronics field that might have a variac that they can loan you, and if not...
  17. 73's de Edd

    Motocycle gear change counter

    . Hey youse guys . . . . Now I ask you . . . . . isn't that low end of a $1.39 price on an E-bay bid . . . . . . thru a high price of $16 . . . . . . and both being of that referenced "Haibo" brand, merely being JUST the units 7 segment display, with its connective wiring . . . . ...
  18. 73's de Edd

    Gate automation system - Motors open but do not close.

    Sir profaz . . . . . Initially , your unit seems to be right at year 2000 vintage, so its birthday cake requires 16 candles. Using your initial old photo, the first thing that I was noticing, was the second relay from the left and its right set of contacts and the 26 microns of carbon residue...
  19. 73's de Edd

    Replacing a faulty SMPS

    . Sir Constantine . . . . . . . . If this was my problem to solve my primary researching would be to initially see what potential power demands are being made on those two supplys. To get a stable 12 VDC I would be using 8 C or D cells for that supply source, which would be creating a...
  20. 73's de Edd

    Hack Basement Watchdog Water Alarm

    .. Sir backporch . . . . . . The following minor changes willl have the water sensing portion operating as before, and not have it being overly sensitive when using a constant 12VDCV on the unit. Of the 3 marked in resistors, (being on the other side of the board), the middle left two...
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