Not sure if this is the correct place for this 'journey' but seems the closest match.
I am progressing through a 'journey' to fix some SMD Stern Boards, which are specifically to drive the bright double flasher leds on Stern Indy (and maybe some others, not sure). Part number for the board is 520-5289-00.
Now, these seem prone to going wrong and generally blowing up or stopping working, so i thought i'd have a look and see how hard it is to fix them. My Indy has 3 of the 4 broken, so i need to get this sorted to. I want to be able to include nice effects in my rewrite using these boards.
Originally i thought it may be possible to find replacements, but that seems like a big no, and therefore fixing them is the only option. The circuit is not too complex, the biggest issue the smd design. Damn you stern!
So in summary, i have 2 boards that don't flash bright any longer and 1 board that either locks on randomly, or is just off all the time.
After some initial testing of the first board to check various resistors and track traces I have ordered some new transistors and voltage regulators and will start here on the circuit to see what comes to life after this. I have tested the LEDs themselves using a small 5v feed injection and they work, so this is good.
I am progressing through a 'journey' to fix some SMD Stern Boards, which are specifically to drive the bright double flasher leds on Stern Indy (and maybe some others, not sure). Part number for the board is 520-5289-00.
Now, these seem prone to going wrong and generally blowing up or stopping working, so i thought i'd have a look and see how hard it is to fix them. My Indy has 3 of the 4 broken, so i need to get this sorted to. I want to be able to include nice effects in my rewrite using these boards.
Originally i thought it may be possible to find replacements, but that seems like a big no, and therefore fixing them is the only option. The circuit is not too complex, the biggest issue the smd design. Damn you stern!
So in summary, i have 2 boards that don't flash bright any longer and 1 board that either locks on randomly, or is just off all the time.
After some initial testing of the first board to check various resistors and track traces I have ordered some new transistors and voltage regulators and will start here on the circuit to see what comes to life after this. I have tested the LEDs themselves using a small 5v feed injection and they work, so this is good.
Seems the voltage regulator on them isn't too happy after a few years use. All 3 had the same fault, though was manifesting itself in different ways.
