M4 Satellite flashing Red after every 15-20 mins disconnecting

My M4 satellite is flashing red and losing connection every 10-20mins.
Steps I have tried:
- Power cycled both main and satellite
- Reset both main and satellite
- Kept both main and satellite NEXT to each other to test whether there are interference issues.
The connections were working fine, (purchased this duo-pack almost 3 years ago), I live in a concrete duplex home, and all this time my main was on the top floor while my satellite was at the bottom, because my ONU device was on the top floor originally.
So yesterday, I finally shifted my ONU device to the bottom floor, to keep my MAIN there and I moved my satellite to the top floor, and this issue started and the wifi internet SPEED on the satellite is VERY poor.
Would really like some advice, I do not wish to spend so much money on purchasing another device.
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Hi, I suspect your M4 has a problem, either with the LAN port or the backhaul connection. It could be the Main M4 or the M4 satellite. Try downgrading to the previous firmware when the problem didn't appear. Does the problem still appear?
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Yes if you go through my entire thread, you will see ALL the details of EVERYTHING that I did.
David sent me a downgraded firmware which I installed and still no-go. Switched the main and satellite and still the same.
Age of the decos are 2.5 years only.
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Age of the router doesn't matter... i had deco the age of 5 years up still going strong...
So check you deco for faulty... maybe cause of the thunderlighing, or electricity drop off or similar event...
I strongly feel that the deco it self had a problem...
if still in guarantee period just claim it to tplink
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@David-TP @Marvin_S
I have found the error and it was HUMAN ERROR!
So in the midst of the shifting of the decos from top to bottom, at one point I cannot recall why, I decided to test out one of my very old 840-N router.
And then I left the power adapter there on the power strip. Because I was using a portable mini-ips to power my satellite router upstairs, I completely forgot what the original power adapter of the deco looked like.
So today, I went to the store and purchased a brand new Archer C6 to try one last time to figure out what was the issue with the main M4.
Right after I opened the box, i unplugged the power adapter to the M4 and saw that it was the OLD 840-N adapter connected to it (9V-0.6A)=5.4Watts
Deco power adapter is 12V-1.5A=18 Watts!!!
No wonder it was working okay under normal load, but anytime it tried to run under 100% load, because it was UNDERPOWERED, it was auto-restarting.
So ISSUE RESOLVED. Thanks All!
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so Power problem...make very sense.. good for you resolve this by your self!!!
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