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  1. 73's de Edd

    need help

    Need good closeup photo . . to compare against some of these possibilities https://smd.yooneed.one/code4134.html
  2. 73's de Edd

    Jet Sander Issues

    Sir USNPatriot . . . . . When you mentioned five . . .count 'em FIVE . . .terminals, I looked up what I thought might be your units speed controller. One was being rectangular and about 2X 3 in and had only small trim pots and any large pot would have to be wire lead remoted into the board...
  3. 73's de Edd

    Jet Sander Issues

    I thought that you knew . . . B signifies that its a linear resistance change type of resistance element and the 1k is meaning that it is having 1,000 ohms of resistance from extreme end to end terminals. You should be finding the original pot being of the illustrations 3rd pic, in its having...
  4. 73's de Edd

    Unitek Dental Spotwelder lost its spark

    I think that all is well with that t-former and you move on to the full charge up of that large E-cap and its geting "banged " into the primary of THE ransformer forr its full milliseconds of glory and the resultant high weld current out of THE transformer. Might you leave a "sacrificial "...
  5. 73's de Edd

    Vintage motor variator

    Sir marcolo . . . . . I don't see that connector using standard IEC wiring color codes . . . . . but seeing that the WHITE connector that goes into the machine proper would have its two outer fingers being connected across a series field and armature of an AC/DC brushed drive motor, leaving...
  6. 73's de Edd

    Replacing LCD instrument readout with LED readout.

    HUH ?????? ¿ ¿ ¿ ¿ You don't evens knows basic/variants of HTML coding ? ? ? ? . . . . . . and use of [ or{ . . . .vice < . . . .to keep it from being transparent. With the rest just being a comical fractional variant, since 7 was the highest /largest font size offering on the pull down...
  7. 73's de Edd

    Unitek Dental Spotwelder lost its spark

    With your confirmation of the "welding current " step down transformer as being conventional low frequency E-I iron lamination construction and not ferrite cored. Why not use a series inserted 100W incandescent lamp in series with the 230VAC line input primary to see what comes out the LOW Z...
  8. 73's de Edd

    Replacing LCD instrument readout with LED readout.

    there is a hotspot on the left hand side of the screen, presumably from a single led *** (That's the source point of the EL light source illuminating into a tapered flexi lucite strip . . . interpret as being of a linear Fresnel design concept.) *** NOPE . . . . . you . . .[Start 999...
  9. 73's de Edd

    Transformer ratings Europe to Uk

    On your pointing finger of post # 9 photo. . . . which is apparently being of post # 14 power supply's top side. Now, can we get a blowup of # 14 on its FOIL side, that is magged up enough for VALID evaluation viewing ?
  10. 73's de Edd

    Unitek Dental Spotwelder lost its spark

    The last part where the 850/ufd/200v E-caps stored up voltage is dumped into the prrimary of an iron core transformer, with its uber high current low voltage secondary. Sounds like a Weller D550 soldering pistol /gun concept. So have you tried a low voltage incandescent lamp . . .#122 . ...
  11. 73's de Edd

    Motherboard p5n32-e sli Help

    Sir elikhaim . . . . . Have all cables and connectors reinstalled and then power up JUST long enough to be able to take a reading, then power off while logging it down. Then use the same power up procedure, as you move on to a 2nd, 3rd and 4th of the items. First use the BLACK and RED...
  12. 73's de Edd

    Replacing LCD instrument readout with LED readout.

    Reading the instruction sheet on its battery and its lifetime specs, clinch it as using an electro-chemical luminescent panel for its backlight illumination. So thats pretty much of a situatuation of what they have now given you, is what you gonna get. The only other question would be as to...
  13. 73's de Edd

    Replacing LCD instrument readout with LED readout.

    . . . . .so I am considering mounting a small led to shine onto the face of the gauge to improve visibility. That unit is incorporating a TRANSMISSIVE LCD element, vice REFLECTIVE , meaning that it is dependent upon its illumination passing thru it from the BACK of the unit, therefore...
  14. 73's de Edd

    Paper Shredder Fault

    Sir spike1947 . . . . . . aka the "spikester" Is that some old schematic derivation from off the internet. as those JAMECO parts numbers are from the 80's. Also don't you think that I was worthy enough to know that this is dads unit ? NOW . . .the first thing that I will be needing is for you...
  15. 73's de Edd

    JVC VIDEO RECORDER HR 7655 EK Loading Problem

    Sir Darren70 . . . . . Have you got the cover off so that you will be able to see the top of a tape cassette .. . .if not, do so now. THEN . . .get a tape successfully loaded into the unit and see if the tape loading fingers are pulling out a loop of tape and then half wrapping it around the...
  16. 73's de Edd

    Soldering Station Repair

    I think the 1/2W I have will just about fit, but probably a little bit tight. Don't even worry about passing its leads thru the holes,as this is just being temporary . . . for evaluative purposes. I , myself, would just get its leads well tinned and then solder tack it to the Pee Cee Bee's...
  17. 73's de Edd

    Sparks Flew -- Garage Door Opener Sequencer Circuit Board

    Well there is no receiver built on this board so, it has to be on another board / portion being plugged into the kazillion other connector stakes being on the sides of this board. As for your suspect of those 5 disc ceramic capacitors of 0.01 and 0.001 ufd values, and also a small axial leaded...
  18. 73's de Edd

    Help on Dell 2007fpb led conversion

    Sir mikey5791 . . . . . ¿ NOW-I-ASK-YOUSE-WHASSAMATTAH-NOW-DUZENT-ENNYONES-HEARS-WANTS-TO-HEPS-YOU-OUTS-WITH-YER-SPECIFICALLY-UNIQUE-CONUNDRUM ? (Try reading that above as effortlessly as the now all too familiar " Aoccdrnig to a rschearch at Cmabrigde Uinervtisy, it deosn't . . ...
  19. 73's de Edd

    Paper Shredder Fault

    Just a note I may have the A44 transistor the wrong way round on the drawing, it is difficult to see which way , has I am looking at it on the underside of the board and the transistor front ( flat part) is facing away from the contacts looking at it from the top . As is being viewed from the...
  20. 73's de Edd

    Soldering Station Repair

    Sir Pejay in the uk . . . . Who could ask for more now . . . what with that all explanatory follow up photo ! (Why fo' the sizeable molded in / purposefull hole in the very bottom of the case . . . . .possible . . . FLUX CAPACITOR overcharge drainage ?) NOW . . .are you being "...
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