Kitz ADSL Broadband Information
adsl spacer  
Support this site
Home Broadband ISPs Tech Routers Wiki Forum
 
     
   Compare ISP   Rate your ISP
   Glossary   Glossary
 
Please login or register.

Login with username, password and session length
Advanced search  

News:

Pages: 1 [2]

Author Topic: HG635, Bricked. power light only on  (Read 3586 times)

burakkucat

  • Respected
  • Senior Kitizen
  • *
  • Posts: 38300
  • Over the Rainbow Bridge
    • The ELRepo Project
Re: HG635, Bricked. power light only on
« Reply #15 on: October 08, 2021, 10:03:48 PM »

Looking at the OpenWrt Wiki page for the Huawei HG635 I see that it states --

How to connect to the Serial Port of this specific device:

Serial port settings 115200, 8N1

Pinout:
J5002
1 - RXD
2 -
3 - Probably VCC (3V3)
4 - GND
5 - TXD

After a careful examination of the image of the PCB, I found the location of J5002:)  See the image attached below.
« Last Edit: October 08, 2021, 10:22:29 PM by burakkucat »
Logged
:cat:  100% Linux and, previously, Unix. Co-founder of the ELRepo Project.

Please consider making a donation to support the running of this site.

routerbox

  • Member
  • **
  • Posts: 10
Re: HG635, Bricked. power light only on
« Reply #16 on: October 09, 2021, 12:19:28 PM »

Looking at the OpenWrt Wiki page for the Huawei HG635 I see that it states --

How to connect to the Serial Port of this specific device:

Serial port settings 115200, 8N1

Pinout:
J5002
1 - RXD
2 -
3 - Probably VCC (3V3)
4 - GND
5 - TXD

After a careful examination of the image of the PCB, I found the location of J5002:)  See the image attached below.

Hi Thanks for the image
and pinout
Can someone post a tutorial how to uart into the router
I Believe hyper terminal is used

Can i use this mode to flash the firmware or fix it so that it will accept the new firmware
Thanks everyone for the help so far
Amazing talent and forum
Logged

routerbox

  • Member
  • **
  • Posts: 10
Re: HG635, Bricked. power light only on
« Reply #17 on: October 11, 2021, 12:47:03 PM »

I have an update all
What is really weird
I mean really weird as there is no other weird

I went to plug in the router using same power supply and lights flashed and everything was working
It was left unplugged on the shelf and i thought to myself
well i will give it one more try.

Definitely strange
Like the program twister strange
Logged

Weaver

  • Senior Kitizen
  • ******
  • Posts: 11459
  • Retd s/w dev; A&A; 4x7km ADSL2 lines; Firebrick
Re: HG635, Bricked. power light only on
« Reply #18 on: October 11, 2021, 01:41:24 PM »

I wonder if there is a cracked PCB track, and cooling it down a lot, by leaving it off for a long long time, will lower the temperature and cause things to contract and could cause a crack to close - highly speculative. If/when it fails again, try blasting its innards with freeze-it spray - that would be an interesting experiment. But anyway, sounds knackered in that case.

Actually, if you flip the board over, can you see any bad soldering? assuming there are some things that are non-surface-mount.
Logged

routerbox

  • Member
  • **
  • Posts: 10
Re: HG635, Bricked. power light only on
« Reply #19 on: October 11, 2021, 04:30:49 PM »

I wonder if there is a cracked PCB track, and cooling it down a lot, by leaving it off for a long long time, will lower the temperature and cause things to contract and could cause a crack to close - highly speculative. If/when it fails again, try blasting its innards with freeze-it spray - that would be an interesting experiment. But anyway, sounds knackered in that case.

Actually, if you flip the board over, can you see any bad soldering? assuming there are some things that are non-surface-mount.

checked the board
maybe the flash took its time
hehhe
Logged
Pages: 1 [2]
 

anything