Lego Mindstorm NXT
Užitečné linky
Problém s LCD
http://blogs.wsd1.org/etr/?p=495
Vysvětlení:
1. The solder joints are lead free due to ROHS regulations. 2. The capacitors are on backside of the buttons! 3. The solder joints will break from the flexure of the circuit board when the buttons are pushed. 4. When you open it and resolder the components, do all if you are in there, it is best to remove solder and resolder with fresh solder! 5. The black thing connecting between the circuit board with the solder joints, connects to the LCD for the information to be displayed. It is known as a flex-circuit or flex-tape and is NOT made to be folded over SHARPLY. It is VERY FRAGILE at the connections to the circuit board and at the LCD. Do as the pictures above show, remove circuit board and LCD together and repair by flipping over assembly, not by folding up flex tape to get to the bottom of the circuit board!! I just looked at one a schoolteacher tried to repair and the flex-tape is broken from too many folds, too sharp of folds. Yes, I have a ton of experience in electronics