too expensive or impossible to do.
You do what you have to do to live Phil. A lot of the boards I work on are for consumer level TV, and with the price erosion of the last few years, I can't afford to pay more for a board than a customer is willing to spend i n total for a repair. I can replace an AS15F gamma IC on an LCD TCON board in 10 minutes tops, and you'd have to look *very* carefully to see that it was replaced. I buy them 50 at a shot out of China for less than 0.50 eac h.
There are some boards that defy repair and those need to be replaced, but t hey are usually a break even deal at best, so we do whatever we can to avoi d replacements.
ll.
True. No schematics, no .bin files, no help. But we adapt by utilizing the datasheets for the ICs on the boards. Fortunately, manufacturers no longe r deface ICs and/or put house numbers on them, so using the "typical" circu it topology provided by the chip maker goes a long way in replacing the mis sing schematic.
Every main board that has a 25 series eeprom gets the .bin file removed, re ad, and stored on my computer (and backed up to half a dozen flash drives). A lot of main boards just have corrupted firmware, and I can pull an eepro m, reprogram it, and get it back on the board in 10 minutes.
I love getting guitar amps in because the guys want them back right away an d don't care a lot about cost. It's nice to work on parts that I don't nee d to wear opti-visors to repair.
I do the occasional "antique" tube radio because it's a lot of fun to bring these old timers back to life.