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  1. 73's de Edd

    Can I find the value of these coils ??

    Much better ! Now 2 of my suspected resistors, turned out to be ceramic compact SM capacitors. Same board ?, but with the use of solvent ? Hope that none creeped into the tact switches, or that they are resistant to what you used, if used selectively. How about pulling the batteries and doing an...
  2. 73's de Edd

    Can I find the value of these coils ??

    Sir mofth70 . . . . . That 'ole BLACK conformal coating, certainly hinders any board tracing and evaluation ! If needed later, what specific functions are tact switches 1-2 and 3 ? . . . Enable /Disable + Horn + Lights ? As I am perceiving that board, the primary functioning brains and...
  3. 73's de Edd

    Capacitor Substitution

    LAS WEGAS . . . . you're in LAS WEGAS . . . .thats what my nephew there, thought when he encountered this . . . .
  4. 73's de Edd

    Capacitor Substitution

    Sir H2814D . . . . It says . . . . Note that the circuit board does list the cap values under the removed caps. 950uF/200V. Then DO ALSO NOTE +- 20% so, you are just fine, just be sure of the +105 degree temp range due to its potential rough temperature environs that it may be subjected to...
  5. 73's de Edd

    Clicking/Buzzing relays

    OH -TAY ! . . . . . . . .a . . . la . . . . Buckwheat.
  6. 73's de Edd

    Varying the output frequency of an ultrasonic driver board

    Sir Braeden Hamson . . . . . O.K. . . . . . Overall . . . . . initially, I can see this IS being a POWER oscillator circuit, with a failsafe fearure, in the respect that if there is no Xducer being connected or that it open circuits, you then have no feedback from L1 being inhibited...
  7. 73's de Edd

    Clicking/Buzzing relays

    Sir Tim . . . . . Replace both, as the board reads out as using but a mere 1/2 wave rectification scheme. As for, the large loose white . . . . hanging . . . .capacitor you did not show its markings, but my first suspicion is being that it is associated with a ventilating fans motor. Use...
  8. 73's de Edd

    M42 remote chemical alarm

    ADDENDA . . . . I see that in a much later proof reading, that my very initial paragraph was not pasted in . . . .to wit . . . . Initially test the unit by creating a short across the two external binding posts located at the bottom front of the speaker. You work the S1 rotary switch beween...
  9. 73's de Edd

    M42 remote chemical alarm

    Sir Gimli . . . . . This might just be the least invasive method. You see the supplied schematic with the relevant portion of the schematic showing the S1 . . . two pole 3 position rotary switch within the YELLOW mark up. Normally the unit is connected to the quite involved and bulky...
  10. 73's de Edd

    20-yr Old Tamarack Attic Fan - Troubleshooting Crouzet Synchronous Motor, Etc.

    Sir attticfanman . . . . . I just had to re read your posts to get a mental refresh, and came up with THIS . Which seems to totally explain the situation. Moreover, something I didn't include earlier, is the fact that the motor can't even hold the hatch open when the hatch is going through the...
  11. 73's de Edd

    Are water solenoids all the same volts & current? -Or close?

    Alright, . . . . fine with that additional forthcoming info. Can we also assume that these are not clogged up ? Particularly and specifically, if the areas / streets water mains have been worked upon. ( Maybe even unbeknowingst to you. ) 73's de Edd . . . . Computers can make VERY fast...
  12. 73's de Edd

    Clicking/Buzzing relays

    Thir timtam75 . . . . . . . . ( ohhhh my, my I theem to have developed a lispth.) Now, in just looking at that board, which just seems to be JUST for the power switching relays and their linear power supply support. Top left corner, we can see the two pin Euro connectors with the AC line...
  13. 73's de Edd

    Are water solenoids all the same volts & current? -Or close?

    Sir Doug3004 . . . . . Are you looking at just the solenoid coil being replaced. For that low price, bought as a whole assembly, is being bigggggger bux. Also, have you torn down the unit to. inspect and clean ? Since there is a neophrene disc, solenoid plunger with its needle valve end...
  14. 73's de Edd

    Comedy Thread

  15. 73's de Edd

    Osram Parathom par16 80328 led voltage

    Still trying to figure out the two black wires going to the led board exiting straight from the transformer secondaries. Never seen anything like this on a smps. In just visually evaluating that unit, it appears that the brains is that IC101 that drives the POWER MOSFET which uses 300+ DC to...
  16. 73's de Edd

    Osram Parathom par16 80328 led voltage

    Sir bushtech . . . . . Is that white thing on the right hand side a resistor? I read 0.8Ω resistance (one side not lifted) CONFIRMED . . . . . that is being your AC input line fusing .. . . testing as GOOD . . . since you ARE getting a +300VDC raw DC voltage output at the units main...
  17. 73's de Edd

    Can you help me find the right Operational Amplifier for vintage sampler looking at the schematics

    " Just need to get crocodiles " I think that those, would be MUCH - MUCH too large for getting down into and doing any connecting . . .mini clips would be more in order . . . . or else, twisting on appropriate length stranded hook up wire leads to the cap leads and solder tinning the...
  18. 73's de Edd

    Can you help me find the right Operational Amplifier for vintage sampler looking at the schematics

    Sir ssyniu . . . . . Working with : OK the SW101 checked and works properly for the right channel the left is distorting despite / irregardless of / the position of the SW101 and but I can borrow a multimeter from my friend. The most that might possibly do is to permit you to leave the...
  19. 73's de Edd

    Can you help me find the right Operational Amplifier for vintage sampler looking at the schematics

    Sir ssyniu . . . . . You sort of short changed us on the schema you submitted, but do duly note that there are 3 series cascaded op amps plus an initial differential pair of op amps involved in your Right and Left analog amplifiers processing. Not JUST the one that you gave. Then, they hand...
  20. 73's de Edd

    IR2153D

    All of the G1 marking code variants seem to be NPN's. https://www.sphere.bc.ca/download/smd-codebook.pdf PLUS, unless it is activated to clamp the C-E and its tied in IC circuitry to ground, it should be transparent to the IC's operationality. I was questioning if some circuitry related to...
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