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  1. 73's de Edd

    Wonderwall projector picture is not clear after cleaning

    Sir Stormes . . . . . Your picture doesn’t help much, unless it is emphasizing a grossly out of focus picture. If you had the lens tube out . . . you do realize that an optical focus is additionally being required by the rotating of the focus tube, its end lens moves for either outward or...
  2. 73's de Edd

    Whirlpool l1373 card (invensys 475560 )can't identify number for part circled inphoto can you help

    Sir Mohd haddad . . . . . Looks like you have 4 other of the same / like items lined on down your board from that one. It is one of the ST family’s line of ACS-108-6SN solid state TRIAC switches with bipolar varistor buffered outputs. Do you know which one of these functions are...
  3. 73's de Edd

    Segment clock controller

    Schematic: C3 and C4 as 22 pf's Xtal as 16Mhz Certainly not much to making a clocks logic and counting . . . .now-a-days . . . is there ? NOT . . . like it was 50 yrs ago.
  4. 73's de Edd

    Alternative Transistors for LM317 High Current Voltage Regulator Circuit

    Sir Prithwiraj Bose . . . . . . . . . . ( Did 'ya know Amar ?) After looking at Tejas Instrumentations specs sheet and that new numbers . . . still quite bucolic alpha spec . . .such as would be permissible with a linear pass design supply. It's using a smaller TO-220 casing, which your...
  5. 73's de Edd

    What transformer is this?

    Anyone consider it being a Ferrite line balun / filter ? 2 wires in 2 wires out Try placing a STRONG super magnet . . . .read as neobdmium . . . right up against the clear covering. It should be equally attracted to it for any position up and down the length of that clear covering. I frankly...
  6. 73's de Edd

    Esr capacitor tester

    Sir mrel . . . . . ALL types . . . . BUT . . . . ESR is mainly being a problem emcountered with electrolytics . Particularly ones that are subjected to high frequency or pulse related handling along with a parallel potential to run warmer, just by virtue of those conditions. What few high...
  7. 73's de Edd

    Not really a repair, but some help going in the right direction appreciated

    Sir fiveseven15 . . . . . Ahhhhhhhh . . . . . yes . . .ever forthcoming little tid-bit of info is being ever so helpful. You have given no info so far as to the lever actuated assembly as to the “feel” of rotating the shaft that the lever was affixed to. Specifically, if there was any snap...
  8. 73's de Edd

    Not really a repair, but some help going in the right direction appreciated

    Le Tech informacion . . . parte deux . . . . Logical . . . that BLACK DPST was switching both legs of your AC power as your MAIN power switch as most industrial circuits do. Can you fill in on the one broken wire shown on the magged up inset ? With you not having filled me in yet on the...
  9. 73's de Edd

    Not really a repair, but some help going in the right direction appreciated

    That gets you a variable speed or optional, bypassed full speed motor, after a motor cleaning. Since I see that motor is using BLACK common POSJ-ZIP-Lamp Cord as its external wiring any chance that the two wires were connecting to terminals 2 and 6 of that terminal board ?
  10. 73's de Edd

    Not really a repair, but some help going in the right direction appreciated

    Sir fiveseven15 . . . . . . . . .( is that same-same as 5,7-15 ? ) Taking reference . . . to the very first photo . . . . You still have a decent amount of remaining brush electrode left with the pair. In its past, the left brush ran the hottest and has a bit less electrode length left. The...
  11. 73's de Edd

    Not really a repair, but some help going in the right direction appreciated

    Sir fiveseven15 . . . We now see that you have a small HP brushed AC-DC motor . . . . now confirm that it only has two wires ( with a possible third, GREEN equipment ground) and give their two connection points to circuitry. Your levered dee-vice is an end of material switch that probably...
  12. 73's de Edd

    Light bar: intended for car battery, but....

    Sir mattfara . . . . . All you need to do now is to differentiate as to the light bar or the now questionable conditioon of your free / gifted power supply. Disconnect the POSITIVE power lead from the light bar and get two test leads with clip connectors on both ends and move out to the olde...
  13. 73's de Edd

    Light bar: intended for car battery, but....

    Now I ask you . . . . . doesn't that FREE taste good ? About he only use I see for those 1990-2000 old laptops is using them for poking up text on or makiing a digital juke box from them. ASIDE . . . . I still think the best use for empty beer cans , should you find a partaker all passed out ...
  14. 73's de Edd

    Strange Behaviour

    Assuming that connector is like a miniature phono plug . . .mono or stereo? and with plastic or metal case/shell ? she touches the tip to people and possibly doesn't get even a hummmmmmmm from any others. While she both holds the connector with her hand and then touches the tip to some or...
  15. 73's de Edd

    Not really a repair, but some help going in the right direction appreciated

    Sir fiveseven15 . . . . . What I am seeing there is a panel with a 5K speed control pot and its associated solid state Triac controller that is at the end of the term board. Assurredly, using a NEON based indicator lamp. Can you fill us in on what is being the function of the toggle switch...
  16. 73's de Edd

    What readings to expect from a DMM's Cap setting

    Also check a buuuuuunch of other 10 and 22 ufd caps to see if they are testing out OK, In olden tymes they would always assure that your electrolytic capacitor met the minimum capacitance spec, but some would also give up to a permissible +200% tolerance spec on its high side. In some past...
  17. 73's de Edd

    How fragile are diodes? Can you screw them up soldering them?

    The dip switches are associated with: Clipping engagement at +- 0.7V Clipping engagement at +- 1.4V through a feedback loop Mo' Bigger . . . . . 73's de Edd
  18. 73's de Edd

    How fragile are diodes? Can you screw them up soldering them?

    If a slight spacing is permissible, the clamping on of a curved mini hemostat pliers jaws will be carrying off the heat from the soldered lead BEFORE it can even get to the diode proper.
  19. 73's de Edd

    (Russian) 1978 Radio's audio signal path from cassette deck

    Yeth. . . .that's being the base resistor . . . . .secondarily, confirm that there is being no different lead assignment of b-c-e versus c-b-e between the Russkie transistor and the one that you subbed in .
  20. 73's de Edd

    (Russian) 1978 Radio's audio signal path from cassette deck

    Sir Richard9025 . . . . . Right-o . . . . that collector voltage swing is what determines the VT1’s outputted audio level and that is but a mere whisper with a 1V level available there.. Lift that 390 k and see if your emitter voltage doesn’t jump on up to full supply battery voltage. PLUS...
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