Which part is dead?

Krakatou · Post by **Krakatou** » Tue Sep 16, 2003 5:09 am

I have personally worked with programming Micros with LCDs at uni, and in my time doing so have managed to only destroy 1 LCD.

My LK204-25-WB has been working amazingly for a long time now. Ive written my own VB6 programs too. However yesterday it emitted a very bright light blue flash from the rear inside my computer, when i booted up. It made all my hardrives go crazy! I wondered wot would be the most likely part to have blown? Ive had a fiddle, and did manage to get the backlight to switch on for few seconds. With this in mind i figure it the serial to LCD board that has the problem? The silver capacitor next to the large PIC is looking slightly yellow. The Voltages at the pins on the LCD port are all 0V or near enough.

Miles · Post by **Miles** » Thu Sep 18, 2003 12:30 pm

The "oval silver looking thing" is actually a 20 MHZ crystal...can you check the voltage on each side with reference to ground...?

Krakatou · Post by **Krakatou** » Fri Sep 19, 2003 6:16 am

The crystal has 0V either side with ref to 0V.

Miles · Post by **Miles** » Fri Sep 19, 2003 7:58 am

On pin 2 of the header that connects the PCB to the display, what is the voltage (on the display side, pin numbers are given for orientation)?

Krakatou · Post by **Krakatou** » Sat Sep 20, 2003 7:22 am

Miles · Post by **Miles** » Mon Sep 22, 2003 10:06 am

This doesn't sound promising...

Can you email me at myero@matrixorbital.ca to discuss RMA options.

Krakatou · Post by **Krakatou** » Mon Sep 29, 2003 5:06 pm

What if it gets returned to you guys and turns out to somehow be my computer that has blown it up? Will I have lost my money shipping it back to Canada and also lost the dead screen?

Miles · Post by **Miles** » Tue Sep 30, 2003 3:06 pm

Can you check one more thing for me...what is the current draw of the unit??

We do our best to be fair and nice, however this is a chance you'll have to take as I won't know what's wrong with the unitl I receive it here and diagnose the problem. If the unit is damaged beyond repair, we do offer a discount for future purposes!

Krakatou · Post by **Krakatou** » Tue Sep 30, 2003 5:02 pm

Current draw of the unit?

Miles · Post by **Miles** » Wed Oct 01, 2003 7:45 am

Yes...do any components get warm to the touch when power is applied??