Oh god! We bought our more than 50 years old house two years ago and every time we touch something we found that the previous owners wanted to keep every cent they can on any job. I can feel your pain!
Hello, could lexel or someone help? I am building M2 Quad and my new 17mm FET driver from Lexel does not work.
I already checked,
leds are okay, no short (multimeter check, different driver)
resoldered wires on MCPCB
resoldered negative wire on driver
checked 7135 chips after I soldered spring, if there is no short (under hand magnifier)
pulled off driver, soldered to single MCPCB with led (led works), I connected a battery using crocodile clamps and wires to positive and ground
no response at all.
Then I checked driver again and found R1 connected to resistor?? besides and grounded. I have also another the same white version, which I haven´t use yet. I compared the resistors and they aren´t grounded. Does it matter and is this the problem?
I got no reading :(, this has to be faulty. May I ask you, could you send me a new one 17mm Bistro HD OTSM (Tail clicky lights) driver together with my Buck driver order?
Yes, R2 was grounded to the ring. So I removed it, wicked off all the solder and found, that the pad of R2 is conected to the ring. There is no way how solve this I guess, look below
Its no problem to make a replacement for a fee that covers shipping parts and the time to make it,
usually cheaper than failure analysis but I try never to scrap a driver that has an error
I test all drivers here befre shipping so I have some that need fix and often points on little design errors (or fab errors because they are not within 6 mil with a layer)