Toshiba l645d mobo vin short

[Topelove]

Pls help.my Toshiba l645d vin is short.whenever I plug in the charger,the light on the charger switches off and when i remove the charger from the laptop it switches on again.the laptop does not also respond to power from the battery.i downloaded the schematics and read it from the charger part.i realized that anywhere where VIN is written ,it connects to ground.i believ VIN should be 15v directly from the charger.so how do I know the faulty component .this is the schematics used

[Topelove]

Re: Toshiba l645d mobo vin short

Discoveries so far shows the following components which are supplied by VIN are all short: started from pq27,then pc18,pc16,pd6,pc174,pc93,c80.all this components expect pq27 reads continuity and beeps on the meter which is different from what is on the schematics.pq27 also has continuity at the supply part .could it be the faulty component?anyone Pls share ideas .thanks

[cyberhack]

Re: Toshiba l645d mobo vin short

Remove pq27 and check for short
PD6 could be short

[Topelove]

Re: Toshiba l645d mobo vin short

Remove pq27 and check for short
PD6 could be short

Thanks for the reply,I'll try that and get back.i just want to point out that no component is on pd6 and both points still reads short.ill remove pq27 as U said and read again Thoug the reason why I am confused is because pq27 has no connection with ground on the other legs except the supply part which is point 4.so I was actually suspecting pr18 or pr16.and I was also wondering the first point where vin enters the board.is it at pq27? Or some other points.

[Topelove]

Re: Toshiba l645d mobo vin short

Remove pq27 and check for short
PD6 could be short

I've remove pq27.all the components connected with vin still short.will I av to reAd all those components one by one?how do I read the components without removing them and still detect the faulty one.also Pls at what point does vin enters d MOBO.

[Topelove]

Re: Toshiba l645d mobo vin short

Pls I'm awaiting somebody's assistance

[cyberhack]

Re: Toshiba l645d mobo vin short

pq27 removed to find where the short was now we know its in the Vin side next i would use a bench supply and see what gets hot.
Have had pc8 short in the past

[Topelove]

Re: Toshiba l645d mobo vin short

pq27 removed to find where the short was now we know its in the Vin side next i would use a bench supply and see what gets hot.
Have had pc8 short in the past

Bench supply and see what gets hot!!! I don't av d slightest idea.whats bench supply and how do I do dat.