Search results

  1. partyanimallighting

    LED Driver unit with no output

    All the measurements I listed in my last post were with the blown regulator removed. You mentioned that Pin 2 to Ground should have a higher resistance and I'm checking resistance from Pin 2 to the Pin 3 / Pin 5 sockets, which are on the Ground rail. Am I doing this correctly or should I check...
  2. partyanimallighting

    LED Driver unit with no output

    I put in the new LM2575 and it promptly blew out so I decided to do some further probing around. From the datasheet I see that pin 1 is voltage in, pin 2 is output and pin 3 is the Ground rail so I removed the blown out regulator and tested the circuit board for continuity from Pin 1 to 2, 3, 4...
  3. partyanimallighting

    LED Driver unit with no output

  4. partyanimallighting

    LED Driver unit with no output

    I also cleaned up the solder points as best as I could.
  5. partyanimallighting

    LED Driver unit with no output

    OK. I got the part or something resembling it, LM2575T and cleaned up the solder points.
  6. partyanimallighting

    LED Driver unit with no output

    It has a small heatsink. I'll put a larger one and maybe a small 12VDC fan if I can find a source on the circuit board.
  7. partyanimallighting

    LED Driver unit with no output

    LOL! I'll see if the part is available tomorrow, install it and see what happens from there. I believe the unit may have simply overheated because it was installed in a ceiling and was then smothered with sound proofing material so there was no ventilation whatsoever.
  8. partyanimallighting

    LED Driver unit with no output

    OK. You stumped me there. Sous??
  9. partyanimallighting

    LED Driver unit with no output

    I just found the other tester ( under the unit's housing on the workbench) and took readings with this tester and I'm getting 0.2Ω and 0.4Ω (2 to 3 and 3 to 4). Sounds better or worse? If the LM2575 is fairly cheap I'll buy 2 pieces, and if the first one blows after I install it, at least I'll...
  10. partyanimallighting

    LED Driver unit with no output

    Yes they were. I removed the regulator to try to source it tomorrow.
  11. partyanimallighting

    LED Driver unit with no output

    I'm getting 2.6Ω and 2.4Ω across pins 2 and 4 from pin 3 with the LM2575 removed from the pcb. The Fluke tester is a little on the old side and may not be 100% accurate after years of use and I can't find my other tester at the moment so I can't take a second reading right now. Do these...
  12. partyanimallighting

    LED Driver unit with no output

    Here they are. Resistance from Pin 3 (Black Lead) to Pin 2 - 1.1Ω. To Pin 4 - 1.4Ω. Resistance from Pin 3 (Red Lead) to Pin 2 - 1.1Ω. To Pin 4 - 1.4Ω. Hope this helps.
  13. partyanimallighting

    LED Driver unit with no output

    Back again. I checked and it's a voltage regulator, the part number seems to be LM2575, listed as a "simple step-down switching voltage regulator". I powered up the pcb and tested the voltage outputs at the pins and, according to the data sheet, I'm getting 35VDC at pin 1 (input, so that's...
  14. partyanimallighting

    LED Driver unit with no output

    Nope. No schematic. I took my first initial look at the unit this morning around 3:30 AM so I just posted my preliminary findings with pictures. As you said, it's most probably a voltage regulator so I'll power it up and check pin to ground for voltage readings and post my findings with the part...
  15. partyanimallighting

    LED Driver unit with no output

    Hi guys, I have an Acclaim Lighting LED driver unit that is not powering up at all. The unit is fairly straightforward, 120VAC to 24VAC power supply (26VAC read with tester) feeding a driver PCB which in turn outputs to a total of 8 LED units. So far I've bypassed a small ceramic capacitor on...
  16. partyanimallighting

    Suitable substitute part

    Hi guys, I have two suppliers that I normally buy parts from in the US but both suppliers don't have the part listed at all. So I'm looking for a suitable substitute that I can use. As far as my actual knowledge is concerned, I'll be guessing as to what part can be used as a substitute. Will any...
  17. partyanimallighting

    Suitable substitute part

    Hi Kris. I attached a data sheet previously. The pcb in question only has two of these sensors on it so, if any of them fail, I can purchase the sensor or a suitable substitute, then I can simply remove the pcb, swap out the sensors and replace the pcb.
  18. partyanimallighting

    Suitable substitute part

    Here's the datasheet.
  19. partyanimallighting

    Suitable substitute part

    Hi guys, I'm trying to stockpile some spare parts for some moving heads that I have in rental. One of the parts is a small PCB which picks up a magnetic field from magnets installed on the Pan and Tilt gears via a Hall Effect Sensor Part No. W41FC. I'm finding all sorts of substitutes online...
  20. partyanimallighting

    Bad output on DMX Splitter

    Hi guys. I swapped out the LM339 and the unit's 100% functional. I couldn't have done this repair without your help. Thanks!!! I'm going to post another little issue in a bit. Hope you can help me out again.
View older results
Top