My Hitachi P50H401 went black and reflexively, just like fixing the display on my fancy Maytag dryer, I found and replaced two bulging caps. No help. I bought the manual, read the troubleshooting guide, [B]flashing red LED means bad fan[/B], but my fan was spinning, so I dove into all the shorted IC checking madness famous on these forums, bought help from justanswer, and got nowhere. Just before buttoning it up to take to the board swapper (repair shop), I pulled up the datasheet for the fan and found it had a sensor lead (white) that, if high (3V), told the controller that it wasn't spinning....

Re: New Members - please post your introductions here

Hi. I was born 6/15/45. I fixed radios from age 10 to now, and TVs from age 12 to now. I even fixed them in a real TV shop for a while (the wonder of actually having an inventory of spare tubes that probably were good!) I started EE school, interrupted by the USAF, which taught me to fix a computer with 55,000 vacuum tubes (AN/FSQ-7), finished EE school, built robots, built computer ticket systems, patented and built and licensed SCSI bus repeaters and switches, became an expert witness in patent lawsuits, moved to mexico.