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  1. partyanimallighting

    RGB Laser Power Board Issue

    OK. latest update. I tried one of the replacement rear panel PCB's with the voltage control PCB and the problem is still there. So I did some digging and found a similar relay in a parts bin and changed it out and re-tested the unit. It powered up with no voltage to the 5VDC power supply then...
  2. partyanimallighting

    RGB Laser Power Board Issue

    OK, did some further testing. There's a definite drop across all the outputs once the power supply is connected, even after I resoldered all the traces and checked everything for continuity and everything's fine on that side. I have the original PCB's and two replacements that the supplier sent...
  3. partyanimallighting

    RGB Laser Power Board Issue

    Hi kellys_eye, all the outputs are paralleled so I didn't check the other outputs because, although there are three outputs, only one is used so I will test that later but logic dictates that I should get 1.5V on all. I'll resolder all the traces before I test also. I checked all the harnesses...
  4. partyanimallighting

    RGB Laser Power Board Issue

    Hi all, I have a 1/2 watt RGB laser that was purchased quite a few years ago and it was DOA. Because of this, and a lack of spare time to fiddle, it's been packed up in it's flight case all this time and I basically was using the flight case as a trolley/workbench for other units being repaired...
  5. partyanimallighting

    Martin MX-4 scanner issue

    Hi (*steve*), I traced the lead from the shutter control from the harness pins back to the ULN2803A driver pins with the driver installed in the IC socket from the top of the driver pins with good continuity. The same goes with the leads from the driver back to the microcontroller. Good...
  6. partyanimallighting

    Martin MX-4 scanner issue

    Hellooooo? Any feedback at all would be appreciated......Any........At all.
  7. partyanimallighting

    Martin MX-4 scanner issue

    Hi wizards, I need a little feedback on an issue I'm having with a Martin MX-4 scanner. I acquired four of these very old discontinued units (Circa 1999) and each one had issues that I have resolved after troubleshooting them one by one. The major issue I've encountered was malfunctioning TILT...
  8. partyanimallighting

    Eprom available?

    "Piqued!" That's the word! So this little doo-dad will be able to program new MCU's so it's worth a shot. Nothing to lose. I also found another which claims to be able to "unlock" locked MCU's. Is this possible? The info on this "fuse repair" programmer states that it is designed to program all...
  9. partyanimallighting

    Eprom available?

    My interest is peaked!! I did some searching and found this listed for a few bucks on eBay. 40 pin socket connecting to my laptop via USB and the 8515 is listed among the programmable chips on the web page. So I'm guessing I can plug a couple of bucks into this, download the free programming...
  10. partyanimallighting

    Eprom available?

    The 8515 is seated in a 40 pin IC socket so I simply swapped out the problematic main PCB in one of the units with a known working and tested PCB. With this functional PCB installed, the unit started up fine and functioned without any issues. From there I simply swapped out the suspect MCU's one...
  11. partyanimallighting

    Eprom available?

    Hi wizards, I'm troubleshooting some old discontinued Elation moving heads and I've narrowed down the problem to the eproms on one of the main pcb's, an ATMEL8515. I'm finding these eproms on Digi-Key but, from past conversations in this forum, I was made to understand that these eproms are...
  12. partyanimallighting

    Microcontroller replaceable?

    These units were in a club environment with lots of fog and cigarette smoke without ever being serviced for years, just left on the rig and, when problems started to appear, the issues were left unattended, compounding the problems. They came into my hands maybe 3 years ago and were left...
  13. partyanimallighting

    Microcontroller replaceable?

    Love that "one cockroach" quote!! I'm still learning and will never stop. It's basically lack of experience and a slow learning of reading of schematics but I'll get there little by little.
  14. partyanimallighting

    Microcontroller replaceable?

    I'm putting it down to old age, corrosion over the years and lack of use as these have been out of service for years, sitting down in a storeroom waiting for me to get some time to eventually take a look at them to resolve the problems. If you look at the picture of the pcb you'll see a...
  15. partyanimallighting

    Microcontroller replaceable?

    That fault was definitely not really visible. The break was where the pin on the microcontroller went into the pcb so I didn't see it at all. I'd definitely put it down to lack of experience too. But yet another lesson learned. I'll be more observant next time and do some tracing before I seek...
  16. partyanimallighting

    Microcontroller replaceable?

    Great!!! Found it on DigiKey. https://www.digikey.com/product-detail/en/stmicroelectronics/ULN2803A/497-2356-5-ND/599591
  17. partyanimallighting

    Microcontroller replaceable?

    Oh! And based on your recommendations, I'll order the 2803's from someone reputable like Digikey, not eBay. I'm assuming these drivers are standard, just purchase and pop into the pcb, right?
  18. partyanimallighting

    Microcontroller replaceable?

    Hi guys, I got the faulty PCB's working again!! kellys_eye post about good-or-dead got me thinking so assuming that the microcontroller was indeed good, and the drivers were tested working, I figured that the issue would be between the driver and the MC. So I checked from driver pin to MC pin...
  19. partyanimallighting

    What do I need?

    kellys_eye, you are right. The price of replacement parts for some electronics is often as much as 75% of the cost of the unit. I have looked at some prices of parts for US branded lighting products and I have seen items like power supplies and replacement PCB's selling on these companies' parts...
  20. partyanimallighting

    Microcontroller replaceable?

    Well I do have a rework station on order and I've done a little poking around with SMD parts and I've had some success with replacing parts with the help of a heat gun, a pair of tweezers and a huge magnifying glass so there's hope. So I can just order the 2803 drivers, replace them and they'll...
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