Tried enabling software flow offloading and/or Rx packet steering? Tried installing irqbalance (or manually pinning interrupts)? Changed CPU frequency scaling governor settings?
that circled dot was the one that was missing. What do you guys think is the name of that component? a resistor?
well, when i bricked my router this wasnt here. the only thing that was rusting was the RF shield and not the inside.
what's an NT chip? and what are the missing components? sorry man im an 11yo kid who knows many things on tech but not on PCBs
The black one under your circle has 'NT' on its label, right to it is another component missing.
is it an resistor?
My guess would be capacitor (on the right), but that (or its value) is impossible to say.
oh ok, do you think removing the RAM and cpu and put the CPU to a new board and have the RAM for a spare is a good idea?
well if you say so, i will find one probably in ebay but i probably need paypal or something since i live in the philippines
and use the Linksys router as a donor board?
No, it isn't. That won't work.
Tl, dr.
That's no garden variety pc mainboard with sockets.
The CPU and RAM are soldered on the board, you need some special equipment to remove them without destroying them in the process.
And even then: Do you think you'll get an identical board without CPU and RAM?
Even if this is true: You'll need another special equipment to resolder the parts onto the new board. And you can't be sure that it will work after this anyway.
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The only reason to attempt such a repair is if you can get an otherwise identical device for free or very nearly free.
The PCB on the unit you have now is almost certainly not recoverable based on the amount of corrosion. Fixing traces, especially on a multi-layer board like that, is exceedingly difficult. So anything you'd do would use this device as a donor to repair another one. And, if you were to get another identical device, maybe that one would be working? Or if it wasn't working, you'd need to know that between the two devices, you'd have a full set of functional components (it's no good if both of them have the same broken part(s)).
The amount of skill required, time invested, and risk of it not working in the end make it generally infeasible to attempt a hardware repair of this nature. Even for the most skillful of electronics professionals, this would likely be a complete writeoff unless it was some rare or extremely expensive bit of kit that was worth that kind of effort.
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sorry if im saying too many questions but could i use this as an switch hub instead?
and is it also ok if i leave the Wireless broadcast turned on?
I thought you said it wasn't working...
That seems like it is dead if this is the case...
So if the device isn't working, the answer is no... it's dead.
That would also be a silly question if the device doesn't work.
Can you clarify??
i meant if i unbricked the router is it safe to turn on the wireless broadcast or use it as an switch hub?
I'm not sure how to best express this most effectively, but I'll say this once more:
In other words, I can tell you that it is extremely unlikely that anyone would be able to restore this to working condition again. Given the questions you are asking, I am quite positive that you do not have the skills required to do this (and even if you did, it is beyond reparability from a physical standpoint). It's not all that different from a car that has been in a serious car accident (think falling off a 100 meter cliff).
You will be wasting time and energy (and possibly money) trying to repair it... it's not going to come back to life.
It's dead, Jim.
aw man, ok then. i will give an update if i unbricked it
Hello community, I'm having similar issues with my EA8500.
I have done several resets including a 30-30-30 reset, but i read somewhere that you should not do this for this specific model. It seems i have bricked the router.
Tried to hookup with serial connection as described here; https://mrjcd.com/EA8500_DD-WRT/ but without any luck.
Tried about everything including swapping TX and RX. (still unclear what it should be, i see differences on multiple sites)
But what i do, i don't get messages from Putty.
I use an FTDI board and seeing the TX light blink when i press a button. I only see the RX light blink when i undo the Ground. I have measured the voltage between the pins on the router board and is around 3.3V on TX and RX between GRD.
When i turn the router on the power light only blinks once very short. After that the UTP connectors lights blinks one after the other.
Also when i connect with UTP on port1 i'm not able to PING on 192.168.1.1, my laptop is configured with fixed IP. Also tried the last IP address i gave the router before reset, but also without luck.
I get the message on mac Terminal:
ping 192.168.1.1
ping: sendto: No route to host
Request timeout for icmp_seq 0
I'm stuck.... any help is very much appreciated.
@max48 - were you running OpenWrt?
Hi, pls focus on the serial connection, if you cannot get the bootloader print out, only two reasons:
- something wrong on the serial connection from the ea8500.
- the bootloader dead, or the router hardware dead.