开云体育

OCX Display

Marc Katz All Messages By This Member #17478 开云体育 Completed the kit and powered up ? No smoke Display lit up All controls functioned Heard noise in earphones ? Only thing weird – Bottom row of display had a bunch of “T” across the row. Sometimes an “*” ? I have NOT as yet performed the alignment procedure. ? Should I continue or is there are problem? ? Thanks, Marc WB2MSC ? Sent from for Windows 10 ?
Mike All Messages By This Member #17479 that's the noise being decoded as random morse. Its ok and seemongly working as it should. better than my QCX, it slid off the shelf and shorted on its exposed power clips. now its rather deaf :-( toggle quoted message Show quoted text On 28 Oct 2017 at 13:56, Marc Katz wrote: Completed the kit and powered up No smoke Display lit up All controls functioned Heard noise in earphones Only thing weird - Bottom row of display had a bunch of "T" across the row. Sometimes an "*" I have NOT as yet performed the alignment procedure. Should I continue or is there are problem? Thanks, Marc WB2MSC Sent from Mail for Windows 10
g4sra All Messages By This Member #17480 Like a functioning morse code receiver decoding noise, the drinks are on you. toggle quoted message Show quoted text On 28/10/17 18:56, Marc Katz wrote: Completed the kit and powered up No smoke Display lit up All controls functioned Heard noise in earphones Only thing weird – Bottom row of display had a bunch of “T” across the row. Sometimes an “*” I have NOT as yet performed the alignment procedure. Should I continue or is there are problem? Thanks, Marc WB2MSC Sent from Mail for Windows 10
Marc Katz All Messages By This Member #17482 Thanks, the drinks are on me gladly. Marc toggle quoted message Show quoted text On Sat, Oct 28, 2017 at 2:16 PM, g4sra via Groups.Io <g4sra@...> wrote: Like a functioning morse code receiver decoding noise, the drinks are on you. On 28/10/17 18:56, Marc Katz wrote: Completed the kit and powered up No smoke Display lit up All controls functioned Heard noise in earphones Only thing weird – Bottom row of display had a bunch of “T” across the row. Sometimes an “*” I have NOT as yet performed the alignment procedure. Should I continue or is there are problem? Thanks, Marc WB2MSC Sent from Mail for Windows 10
Marc Katz All Messages By This Member #17483 Thanks, Mike. I'm sorry to hear about the accident. I'm not an electronics expert but maybe you just blew something local in the power supply. Wishing you the best. Marc toggle quoted message Show quoted text On Sat, Oct 28, 2017 at 2:00 PM, Mike W <mike@...> wrote: that's the noise being decoded as random morse. Its ok and seemongly working as it should. better than my QCX, it slid off the shelf and shorted on its exposed power clips. now its rather deaf :-( On 28 Oct 2017 at 13:56, Marc Katz wrote: > Completed the kit and powered up > > No smoke > Display lit up > All controls functioned > Heard noise in earphones > > Only thing weird - Bottom row of display had a bunch of "T" across the > row. Sometimes an "*" > > I have NOT as yet performed the alignment procedure. > > Should I continue or is there are problem? > > Thanks, Marc WB2MSC > > Sent from Mail for Windows 10 > >
Roger G4IUP All Messages By This Member #17485 I did something similar with my first OXCO kit, the sparks were pretty though! I have tried to keep my QCX away from danger but if I do not box it up somehow it could well happen. 73 Roger
Alvey Street All Messages By This Member #17489 开云体育 These letters on bottom line are decoded morse. It is noise but the micro thinks it is morse.? 73 vin On 28/10/17 18:56, Marc Katz wrote: toggle quoted message Show quoted text Completed the kit and powered up ? No smoke Display lit up All controls functioned Heard noise in earphones ? Only thing weird – Bottom row of display had a bunch of “T” across the row. Sometimes an “*” ? I have NOT as yet performed the alignment procedure. ? Should I continue or is there are problem? ? Thanks, Marc WB2MSC ? Sent from for Windows 10 ?
Marc Katz All Messages By This Member #17494 开云体育 Thanks Vin I’m learning new stuff every day Marc WB2MSC toggle quoted message Show quoted text On Oct 28, 2017, at 16:07, Alvey Street via Groups.Io <busy@...> wrote: These letters on bottom line are decoded morse. It is noise but the micro thinks it is morse.? 73 vin On 28/10/17 18:56, Marc Katz wrote: Completed the kit and powered up ? No smoke Display lit up All controls functioned Heard noise in earphones ? Only thing weird – Bottom row of display had a bunch of “T” across the row. Sometimes an “*” ? I have NOT as yet performed the alignment procedure. ? Should I continue or is there are problem? ? Thanks, Marc WB2MSC ? Sent from for Windows 10 ?
[email protected] All Messages By This Member #17496 Doing better than me, All mine displays is two rows of solid blocks regardless of how the contrast is set. No mistakes as far as I can see. Cant do anything with it, other than put it in the draw until I have some idea what went wrong.
Marc Katz All Messages By This Member #17500 开云体育 Simon I wish you the best with the display. Marc toggle quoted message Show quoted text On Oct 28, 2017, at 17:15, simon.oliver90 via Groups.Io <simon.oliver90@...> wrote: Doing better than me, All mine displays is two rows of solid blocks regardless of how the contrast is set. No mistakes as far as I can see. Cant do anything with it, other than put it in the draw until I have some idea what went wrong.
[email protected] All Messages By This Member #17512 Thanks Marc, Im beginning to think it might be the IC2 at fault? With no chip installed I get just the top line of blocks. Two lines of blocks with the chip in.
Hans Summers All Messages By This Member #17513 Hi Simon? I think you should check the contrast setting. Maybe there is a short or other fault. As you adjust the contrast potentiometer, can you see the voltage at the LCD's contrast pin change, between 0V (one end) and 5V (the other end)? With the chip installed, at one end of the contrast pot you should see all black blocks; at the other end, no black blocks. At some point (quite sensitive) you should be able to see text.? 73 Hans G0UPL? ? 73 Hans G0UPL? ? toggle quoted message Show quoted text On Oct 29, 2017 12:39, "simon.oliver90 via Groups.Io" <simon.oliver90=[email protected]> wrote: Thanks Marc, Im beginning to think it might be the IC2 at fault? With no chip installed I get just the top line of blocks. Two lines of blocks with the chip in.
[email protected] All Messages By This Member #17515 Hi Hans, thanks for the reply. The voltage does change between 0v ( display fully of blocks) up to 5v ( display blank). At no point can I see any text on the display. I took the measurement from the 3rd pin from the left on the display module. Simon.
Alvey Street All Messages By This Member #17538 开云体育 Check voltage on pin 3 of display, with respect to the voltage on pin 1 (0volts).? When mine was set up, it measured 0.9V and was extremely critical.? If you turn the pot to the end-stop, both ways, and if the display does not change, I suspect a bad solder connection. 73s? Alvey On 28/10/17 22:15, simon.oliver90 via Groups.Io wrote: toggle quoted message Show quoted text Doing better than me, All mine displays is two rows of solid blocks regardless of how the contrast is set. No mistakes as far as I can see. Cant do anything with it, other than put it in the draw until I have some idea what went wrong.
[email protected] All Messages By This Member #17541 Display contrasts in and out like it should, just no text. Only two rows of blocks. Fades away one end of the pot, back again at the other. Have checked continunity between IC2 and the display and its all ok.???
Hans Summers All Messages By This Member #17554 Hi Simon So you checked for continuity from each of the LCD pins to the IC2 pins that they should be connected to. Have you also checked the voltages at the LCD pins, and do they correspond to what you see in the trouble-shooting section of the manual? With the QCX switched off, can you check with a DVM to see if you have any shorts between any of the LCD signals and ground, 5V, or other signals nearby?? I can happily send you a new LCD module and a new microcontroller (in case either one is the problem) but we should check every other eventuality first. In the majority of cases, there is some assembly fault or short circuit or connection problem, rather than a defective component (IC2 or LCD, or other).? 73 Hans G0UPL toggle quoted message Show quoted text On Sun, Oct 29, 2017 at 11:41 PM, simon.oliver90 via Groups.Io <simon.oliver90@...> wrote: Display contrasts in and out like it should, just no text. Only two rows of blocks. Fades away one end of the pot, back again at the other. Have checked continunity between IC2 and the display and its all ok.???
Daniel Ekman SA2KNG All Messages By This Member #17579 Sounds quite strange, if the MCU does not initialize the LCD, it should show one row of squares and the other row clear. Starting it without the MCU should give you this and adjusting the contrast here (to one row with squares) will enable you to see if it says something with the MCU plugged in. You could test the LCD with only pin 1-3 connected to a 5V supply and a pot just as in the schematic. If it doesn't display one row of blocks then the LCD is probably broken.
[email protected] All Messages By This Member #17591 Chears Chaps, I'll investigate further over this week. Im sure its something smple, just dont know what yet.
[email protected] All Messages By This Member #17851 Hi Guys, im back again. I get continunity between pins 1,5,16 and ground. With the power on (12v) and the contrast pot set for 0.57v on pin 3 i get the following.. Pin 1 0v, 2- 4.87v 3- 0.57v ( with contrast pot adjusted) 4- 3.51v 5- 0v 6- 0v 7- 4.75v 8- 4.75v 9- 4.75v 10- 4.75v 11- 4.86v 12- 0v 13- 0v 14- 0v 15- 4.75v 16- 0v I know my meter isnt the best in the world, so these may not be spot on,but some of these numbers are quite a way out from the manual. Again all I get is two lines of solid blocks, that vary acording to how the contrast is set, with no IC2 I only get the top line of solid blocks. At no point during the adjustment of the contrast is there any text. I cant see any placement issues of solder bridges.. Thanks again. Simon.
VK5EEE Member Profile All Messages By This Member #17861 "A row of blocks appears on the top row" Hi Simon have you read section 6.3 of the manual (international A4) on page 124? That might be your problem. Sometimes I do get these blocks on power up but after power off and on again it is back to normal. My own wildly varying DC measurements on the LCD pins may have been due to having DVM 1/3 shorted (for battery indication) and/or using an old analog meter, once I used the DVM probe of the QCX, all was reading normal.

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