please someone help me for bios clean me

Device: Laptop
Brand: Acer Travelmate P215-52
Model: N19Q8
serial number : NXVLNEF00T0510FE1D7600
SNID : 05106505376
Board number: DA0Z8IMBAC0 rev.C
Request: BIOS Repair/clean me
laptop wont turn on. battery is charging .3v and 5v are present...

laptop wont turn on, 3.3v and 5v are present​

Device: Laptop
Brand: Acer Travelmate P215-52
Model: N19Q8
serial number : NXVLLET00W11919FF17600
SNID : 11910648176
Board number: DAZ8IMB1AA0 REV: A
Request: BIOS Repair/clean me...

This specification for the Acer TravelMate P215-52 TMP215-52-540Z Netbook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the P215-52 TMP215-52-540Z boardview and P215-52 TMP215-52-540Z schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification,...

This specification for the Acer TravelMate P215-52 Notebook can be useful for upgrading or repairing a laptop that is not working. As a community we are working through our specifications to add valuable data like the P215-52 boardview and P215-52 schematic. Our users have donated over 1 million documents which are being added to the site. This page will be updated soon with additional information. Alternatively you can request additional help from our users directly on the relevant badcaps forum. Please note that we offer no warranties that any specification, datasheet, or download for Acer TravelMate...

AAA...

Good day.
Can someone help me clear ME. No Display Issue

Acer TravelMate P215-52 Series
TMP215-52-54FK
N19Q8
Sn: NXVLNSP01C105261217600

Thank you for the help....

Re: Acer Travelmate P215-52 doesn't turn on

did u solve the prob?

I have this laptop (Acer Travelmate P215-52 model N19Q8 ) here, and the owner explained to me story.
Somebody walked by at the table and tripped the power cable, the laptop did not fall down the floor (it was pickup before the landing on the floor).
The power connector on the charger does have damage.
.

The laptop did still work on the battery, the owner did try to attach a other original Acer charger (has more of these model Acer laptops) but the laptop did not work with this charger (did not charge the battery).
Now the battery is empty, and the...

Re: Acer Travelmate P215-52 doesn't turn on

I have done a measurement of a 47K resistor (not in circuit) with both meters.
The results are, that my measurements of 3.3V (RT6256B): gnd > coil: 24.1K and 5V (RT6256C): gnd > coil: 45.5K are correct.

Re: Acer Travelmate P215-52 doesn't turn on

Readings between 2 multimeter should'nt vary like this. Which readings to beleive?? Readings by 1st meter,if true, is problematic. however, if the 2nd meter readings are true, then the readings are fine.

Re: Acer Travelmate P215-52 doesn't turn on



3.3V (RT6256B): gnd > coil: 9.4K (with my second multimeter I got 24.1K)
5V (RT6256C): gnd > coil: 2.98k (with my second multimeter I got 45.5K)



Thanks, I would never have found this myself ...

Re: Acer Travelmate P215-52 doesn't turn on

See attached.

Anytime you find an '=' symbol, this is RICHTEK. The characters AFTER the '=' are datecodes.

So search for 'LJ=' and results in [B]RT6258CGQUF[/B].

'L8=' is [B]RT6256BGQUF [/B](Richtek.

Datasheets are attached. Aliexpress should have these. Just be sure to source the part with the same markings (except for datecode).

PS: Learned from School of @SMDFlea.Re: Acer Travelmate P215-52 doesn't turn on

See attached.

Anytime you...

Re: Acer Travelmate P215-52 doesn't turn on

I have searched all the IC with Google and did not find any PWM controllers where the schematics mentioned something that the chip is responsible for the 3v and / or 5v.
I did not find any information regarding "LJ=6M 3D9" and "L8=6L 56J" chips, any idea how I can find the reference / schematic for this chip?





Also the list with the other IC's I did find with Google:


51486 TI 991 AEKP DDR Memory Power Solutions Multi-Channel Converter DDR4 Memory...

Re: Acer Travelmate P215-52 doesn't turn on

Look for pwm controllers and serach them on google and you will know there function. Once the pwm responsible for 3v/5V is identified, coil will be located nearby to that pwm.

Re: Acer Travelmate P215-52 doesn't turn on

On the board there are 9 coils, how to determine which of those 9 coils is the 3V and the 5V.

Re: Acer Travelmate P215-52 doesn't turn on

I wont suggest this approach. What is the resistance on 3V/5V coil?? Start with basics and dont jump to solution. Schematics does help but basic problems can be solved without schematic. Most of the newer mb schematic are either not avlbl or are there only on paid sites.

Re: Acer Travelmate P215-52 doesn't turn on

Thanks for your answer.
I wanted to make some voltage measurements , and I made a short between the VIN en GND pin
According to Google search, GAF could be a [url=https://www.tme.eu/Document/1c13c0a4489a83f613509c4f26653ad8/AP2204.pdf]voltage regulator[/url].
After removal of the IC, the voltages are still not there on VIN. Yesterday I did measure voltages there.

I did not find any schematics and perhaps boardview files, so no idea what could be damaged with this short I created.Re: Acer Travelmate

Re: Acer Travelmate P215-52 doesn't turn on

That 5 Leg IC is for usb power. You can safely de-solder it from mb. Check resistance on 5V coil before and after removing this IC and post it here. It seems you have +5V line shorted and there may be damage on other parts. The mb can be safely powered without this IC.