eyedol911,
The best way to check the device is use a (3,3V) TTL serial connection to the TL-WR902AC v3. Then you can stop the boot process and re-install OEM or OpenWrt firmware by tftp.
Make sure the used power adapter can deliver 3Watt (= 5Volt, 600mA minimal).
When you don't have a TTL serial the timing of starting the tftp is crucial, 2 to 10 seconds after start of the device.
According: https://openwrt.org/toh/tp-link/tl-wr902ac_v3
This device is NOT RECOMMENDED for future use with OpenWrt due to low flash/ram.
DO NOT BUY DEVICES WITH 8MB FLASH / 64MB RAM if you intend to flash an up-to-date and secure OpenWrt version onto it! See 8/64 warning for details.
This device does not have sufficient resources (flash and/or RAM) to provide secure and reliable operation.
This means that you will not be able to install many packages, and that you might experience crashes due to OOM situations more or less often. See OpenWrt on 8/64 devices what you can do now.
Although is written that the latest version does work on it.
Try the "unbrick" procedure written on: TP-Link TL-WR902AC bad flash recovery - #9 by ogniemi
Regards,
DGdodo