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Hi Randy The master of gibberish is ChatGPT ;-) As Ron said, it's because you have a connection fault on one of the data lines D0-D3 to the LCD. Earlier firmware used the LCD in 4-bit mode

Yes, the front panel and display are the same.

Bill, can you measure the current draw when you turn on the qmx?? If it is waiting for firmware,? it should be about 200mA, maybe a bit more at 7V.? If it is much less than that, or way more, there

I have replaced ic503 and bs170s. Everything is working great now! 73 N6HAN

A measurement of Vcc would also be useful, and how it changes. Maybe also touch D109 - I expect it will be getting hot as Vcc goes up above 3.3V. I'm wondering if you have a temperature-dependent

No, the 9V was a standard Duracell like you'd put in a smoke detector. I wasn't expecting much, just to see if the lower voltage helped or resulted in the same. Ultimately I think it was about the

Randy, I think that was about when the firmware started using all 8 of the LCD data lines. Prior to then it only used 4 of them. One of the 4 others may not be soldered well. Good

At one point, the number of data lines used by the display increased, I think from 4 to 8. Paul -- AI7JR

Ok, I've figured this out. **Firmware versions 19 and earlier work on my QMX — every one of them back to v6 (the earliest one I tried).** Thank goodness for Terminal mode. *Firmware versions 20

Chuck-- If I understand correctly, it's only the QMX+ that gets powered up, firmware loaded, and tested...

Doesn't it say 501?

Hi Randy. I know it seems like updating the firmware caused this but it may have been a coincidence. Gibberish on the screen usually means that one of the data lines to the display has come loose. You

A really good question that you should ask yourself is: Does your radio work when you power it up? They all come with firmware installed for the factory tests of the SMT parts on the board, so if

Did it work before, or is this the initial turn-on? Paul -- AI7JR

I have a factory built unit and your output looks good to me. Very similar. Those that tinker trying to get a little bit more out of theirs write up their sad stories here and ask for help. Don’t

Perhaps that's not enough ... I found that my QMX+ won't really run below about 7.5 VDC.? Below that, it flashes the "flashing battery" icon. Good luck! - Bruce K1FFX

Have you heard about Jeff Moore? He can help.

Unfortunately for me, copy-pasting the file (instead of drag-dropping) made no difference. Still back to gibberish screens. :( Randy K7RAN

Aha, Roger, thank you. I dragged-and-dropped. Using the Terminal app to get back to it, I'll try copy-pasting the file instead. I didn't attempt to delete the old firmware. Will report back. Randy

How are you copying the firmware? Drag and drop has been problematic for some people. Copying/cutting the source file and pasting to the destination is recommended. Also, do not attempt to delete