Hi @kartikulli

Here's a video that shows how to replace the display in the phone.

Search online for GH82-18685A GH82-19366A to find display suppliers that suit you best.

Hi Thomas,

Unfortunately iFixit doesn't have a lot of information on Oppo brand phones, but that doesn't mean we can't help. In looking for guides, it appears the A52 and A53 use pretty much the same procedure when replacing the screen, so here's a step by step written guide for the A52.

Manuales / Oppo A52 / Fullscreen

I also found a video that is specifically for the A53, so take your choice as to which one to use.

OPPO A53 screen replacement guide / OPPO A53 phone cover removal procedure - YouTube

The screen itself looks to be fairly easy to get; I'd start with places like AliExpress, eBay and Amazon and go from there. Here's one of the first ones to come up on my rather cursory search.

Amazon.com: for Oppo A53 Screen Replacement for Oppo A53/A53S LCD Display for CPH2127, CPH2131, PCPH2139, CPH2135 Digitizer Touch Screen Assembly Repair Parts Kits : Cell Phones & Accessories

Hopefully that will get you going! Good luck and let us know what happens.

Hi

I’ve had this issue before and there isn’t a lot you can do BUT there is something the person who sold it to you can do ,the person who sold it to you can contact apple support and can exchange details and hopefully have the password reset but that’s if they are willing to cooperate

If they don’t do anything about it,if you bought it on eBay see if you can return the item and If you can’t return the item, start a case/claim to get a full refund

I hope all goes well for you

Any questions please ask

Thanks:)

Hi @returntomonke ,

Do you think that it is booting into Windows?

If so try connecting an external monitor to the laptop's HDMI port (or mini DP port) and check if it shows a display or not. Don't forget to press Fn + F8 to toggle the display between the laptop screen only, the external monitor only or both on together.

If not, can you get into BIOS on startup with a display? Press F2 on startup and check

Hi @returntomonke

It seems as though it is not starting or at least not passing POST (Power On Self Test).

Not much happens until it passes POST (which doesn’t take long) so there may not be any lights except the Power light or perhaps sometimes a blinking caps lock or power light indicating a problem if it fails during POST (blink error code)

How did you reset the BIOS?

If only by disconnecting the battery and holding the Power button operated for 15 seconds then in this instance it may not have been enough to restore the BIOS to its default values.

Try a full power refresh by disconnecting the main battery and removing the motherboard so that you can remove the CMOS battery from the underside of the motherboard. Remember the orientation of the battery before removing so that you reinsert it the right way. Usually it is +ve on top

When you have the battery out, measure its voltage and if it is <2.6V DC, replace it. It looks like a CR2032 coin cell battery so it is commonly available most everywhere. Check the type number on the battery just in case it is another type. Checking the battery voltage allows enough time for the BIOS to fully reset as now there is no power at all on the motherboard.

If you haven’t got a DMM (digital mulitmeter) then allow a minute or so, before reinserting the CMOS battery to allow the BIOS to default back to its factory default settings, hopefully restoring any settings that were corrupt and preventing a normal start

Then reinsert the CMOS battery, reinstall the motherboard, reconnect the main battery, close up the laptop and try turning it on.

Here’s an image taken from a teardown video of the laptop, showing the location of the CMOS battery on the underside of the motherboard.

(click on image to enlarge for better viewing).

If it still fails after this then it is a motherboard problem

Jessica, first you want to check your audio and video cable connections to the system and your television. Make sure they are properly connected.

Hi @harikrishn56714

Try replacing the battery and check if that resolves the problem.

Here's a video that shows what to do.

Search online for BLP799 battery to find battery suppliers that suit you best.