Blanck screen, loss of PH calibration

Graham2212 · Post by **Graham2212** » Sun Jun 02, 2013 9:04 am

Hi there
I have been struggling with my RA for a couple of weeks now. My screen has been going blank (when I move the joystick, there seems to be a backlight, but nothing appears), but the RA still seems responsive (feeding mode etc), it seems to correct itself when I disconnect it and reconnect. I have had to recalibrate my PH a number of times, but the calibration seems to last about 30 minutes, and then the PH jumps to 11.2. Is there a reason or solution for this problem? Much appreciated...

rimai · Post by **rimai** » Sun Jun 02, 2013 9:13 am

The screen needs to be replaced.
I'm curious to know which numbers you were getting when doing the calibration.
Did you happen to write them down?

Graham2212 · Post by **Graham2212** » Sun Jun 02, 2013 9:29 am

I did write them down. I am using solutions 4 and 7 (with customizable options to calibrate for these). They are Ph4 = 238 Ph7 = 523. Re the screen, the RA is new - bought in March this year - is there possibly a guarantee? Thanks!

rimai · Post by **rimai** » Sun Jun 02, 2013 9:57 am

The numbers look correct.
Yes, the screen in under warranty. PM me for RMA.
I wonder if the pH calibration is getting messed up from the screen itself.
It's a long shot in the dark, but let's try this...
Add this to your setup() after ReefAngel.Init();

Code: Select all

ReefAngel.Timer[LCD_TIMER].SetInterval(84600);
ReefAngel.PHMin=523;
ReefAngel.PHMin=828;

This is going to extend the LCD screen timer, so it won't go into sleep mode and it will also hard code the pH calibration settings.
Let me know how it behaves.

Graham2212 · Post by **Graham2212** » Tue Jun 04, 2013 9:15 am

Both the ph levels (calibration) and screen problems seem to have been resolved, thank you!

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