Re: Vizio M70-D3 4K with dark spots backlight issue

Thanks for this very detailed analysis. I have a Vizio M60-C3 4K with dark spots backlight issue too. I was about to buy a new backlight driver board but instead I will wait for your results.

Re: Lenovo IdeaPad S145 no power - Capacitor? (schematics included!)

Thanks. I've removed the PWM Controller (RT3662AC) but I'm still having the same shorts. I will continue to investigate.

Re: Lenovo IdeaPad S145 no power - Capacitor? (schematics included!)

Thanks. I removed the capacitor. I'm getting a short on the pads of the PCB. On the other side of the board, I have 4 capacitors that are shorted. I also found that many pins (34, 36, 38 and 40) on the PWM Controller (RT3662AC) are shorted. Is it usual to have a faulty PWM Controller?

Re: Lenovo IdeaPad S145 no power - Capacitor? (schematics included!)

Thanks. Both side of this capacitor is showing 0 ohm. I was not aware that I could mesure a capacitor still in circuit.

Hello,

I have a Lenovo IdeaPad S145 that does not power on. After pressing the power button (on the keyboard), the white light (in the key) blinks six times when both battery and power adapter are plugged in, or blinks three times when only power adapter is plugged in. In both case, the LED in the DC power jack never lights up. I've tried hard & soft reset (this laptop has a pin hole for reset purpose) without any success.

I've found a shorted capacitor (red circle in the included picture) near a mosfet. This mosfet receives 19V but no voltage at the gate and...

Re: New Members - please post your introductions here

Hello from Quebec. I'm an IT guy who likes to repair laptops, PC and electronics in general. In this forum, I've found the right information to help me repair my Vizio M43-C1 TV and I would like to share my knowledge. Thanks everybody.