Ron Gray Posted November 7, 2021 Share Posted November 7, 2021 Went to switch my TX on today and nothing showed on the screen, a slight electronic 'click' is all that I get. Bootloader recognised by PC but can't see the TX drives, power light comes on (green)m when USB connected but can't enter boot loader mode from TX (power on, trims in. Tried new battery, new formatted and setup SD card but nothing seems to work. Maybe I'm wrong but I thought that the boot loader was held in TX rom thus making it 'impossible' to brick? Any ideas anyone before I send it back to Richard (who has been very helpful) @T9? Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted November 7, 2021 Author Share Posted November 7, 2021 Sorted! I (eventually) remembered that I had a program called ImpulseRC driver fixer on a laptop so I ran that and the drivers were fixed which then allowed me to write new firmware to the TX. Phew! 1 Quote Link to comment Share on other sites More sharing options...
Allan Bennett Posted November 8, 2021 Share Posted November 8, 2021 It's good you've been able to sort it, but how did it get that way in the first place? Presumably the Tx and the computer have both worked previously, then all of a sudden the Tx fails, and then the drivers on the computer that you use to program it seem to have gone awol. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted November 8, 2021 Author Share Posted November 8, 2021 I wish I knew the answer Allan. The only ‘strange’ thing that happened was that the TX was charging via the usb cable connected to the PC and for some reason the PC decided to crash and restart (good old Windows!). Now I haven’t been back through the logs to see what caused the crash but it could be something to do with the driver but as to why it became corrupt, who knows. To be fair it’s the only major incident I’ve had with any of my FrSky TXs in 8+ years. Quote Link to comment Share on other sites More sharing options...
Allan Bennett Posted November 8, 2021 Share Posted November 8, 2021 I wonder if charging via a computer's USB lead can affect the computer if the charge current is high. To save the hassle of finding and plugging in a charger, or connecting my trannie to a computer, a while ago I bought a twin mains socket outlet with two built-in USB outlets for my workshop. So now my X9D+2019 plugs direct into that. My older X9D+ still needs a charger for its NiMh pack, of course. Quote Link to comment Share on other sites More sharing options...
Martin_K Posted November 8, 2021 Share Posted November 8, 2021 1 hour ago, Allan Bennett said: I wonder if charging via a computer's USB lead can affect the computer if the charge current is high... No need to wonder Allan. A standard PC USB port is not rated to sustain the current required to charge the radio's batteries. When a new FrSky user I fell straight into this hole. Radio good since then. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted November 8, 2021 Author Share Posted November 8, 2021 I have 2 FrSky TX which charge off the USB port on my PC, it is not a problem. Quote Link to comment Share on other sites More sharing options...
Ron Gray Posted November 8, 2021 Author Share Posted November 8, 2021 In chatting to Richard (T9) it would appear that I'm not the only one who has experienced a similar problem which others have put down to a recent Windows update forcing them to roll back the drivers! Anyway, mine's all OK now and I used it today without any issues. Quote Link to comment Share on other sites More sharing options...
Wookman Posted November 9, 2021 Share Posted November 9, 2021 On 08/11/2021 at 11:48, Allan Bennett said: a while ago I bought a twin mains socket outlet with two built-in USB outlets for my workshop My understanding is that these sockets place a permanent current drain on your mains electrical supply. Not a huge one in all probability but if it is on 24 7 365/6 it is going to add up. Just something to be aware of as more and more of our stuff is charged by USB connection. Quote Link to comment Share on other sites More sharing options...
PatMc Posted November 9, 2021 Share Posted November 9, 2021 (edited) 56 minutes ago, Wookman said: My understanding is that these sockets place a permanent current drain on your mains electrical supply. Not a huge one in all probability but if it is on 24 7 365/6 it is going to add up. Just something to be aware of as more and more of our stuff is charged by USB connection. I would imagine they are no worse than a doorbell transformer & they've been around for donkeys, Then there's TV, monitor, electric toothbrush, Alexa ... Edited November 9, 2021 by PatMc Quote Link to comment Share on other sites More sharing options...
Allan Bennett Posted November 9, 2021 Share Posted November 9, 2021 3 hours ago, PatMc said: I would imagine they are no worse than a doorbell transformer & they've been around for donkeys, Then there's TV, monitor, electric toothbrush, Alexa ... That's the view I take. If nothing's plugged into them, the drain is going to be minimal, Quote Link to comment Share on other sites More sharing options...
FlyinFlynn Posted November 10, 2021 Share Posted November 10, 2021 14 hours ago, Allan Bennett said: That's the view I take. If nothing's plugged into them, the drain is going to be minimal, The quiescent current for the [email protected] regulators will be something in the order of 30mW....or three fifths of sod all in leymans terms. https://www.ti.com/tool/PMP8286 Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted November 10, 2021 Share Posted November 10, 2021 So, doing the maths: 30mW = 30/1000W = 30/1000000kW = 0.00003kW Hours in a year = 365 X 24 = 8760 So consumption in a year = (0.00003 X 8760)kWh = 0.2628kWh Assuming a cost per kWh of 25p, annual cost = 6.5p I don't think I'll let it worry me. Quote Link to comment Share on other sites More sharing options...
PatMc Posted November 10, 2021 Share Posted November 10, 2021 25 minutes ago, Tim Kearsley said: So, doing the maths: 30mW = 30/1000W = 30/1000000kW = 0.00003kW Hours in a year = 365 X 24 = 8760 So consumption in a year = (0.00003 X 8760)kWh = 0.2628kWh Assuming a cost per kWh of 25p, annual cost = 6.5p I don't think I'll let it worry me. Trouble is, your maths may be based on false data. FlyinFlyn quotes the quiescent current but quantifies it in mW whereas it should be in Amps, unless he means the quiescent power. Quote Link to comment Share on other sites More sharing options...
Tim Kearsley Posted November 10, 2021 Share Posted November 10, 2021 I agree Pat. My calculations were tongue-in-cheek to be honest, but the link FF refers to does quote quiescent power as 30mW. My point really was that,whatever the exact figures, it's so insignificant as to be, for practical purposes, zero, and certainly a lot smaller than the measurement tolerance on domestic electricity meters I would imagine. Quote Link to comment Share on other sites More sharing options...
PatMc Posted November 10, 2021 Share Posted November 10, 2021 Tim, my comment was also tongue in cheek, I just forgot to add a ? 2 Quote Link to comment Share on other sites More sharing options...
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