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Forums » O Canada! » Canadian » TekSavvy » Anyone know how to fix 2wires that wont sync?
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« Dry-Loop line dropped to partial sync for unknown reasons  
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Teddy Boom

join:2007-01-29
Toronto, ON

reply to Inssomniak
Re: Anyone know how to fix 2wires that wont sync?

said by Inssomniak See Profile :

I bought a lot of "refurbished" ones, I assumed they were tested, but then again, they may have been, just on a short loop.
Unless you know better, I'd bet they just confirmed the initial boot worked and called it good. Very unlikely that they actually tested the DSL connection.

Anyway..
Anyone know how to prevent 2wire from updating the firmware automatically? I see lots of discussion of flashing them back to old firmware, but surely it will just get updated again?!?


G1ggidy

@teksavvy.com

reply to Inssomniak
said by Inssomniak See Profile :

With what version?
The recovery firmware. (425.2?) Whatever the most common version is.

InvalidError

join:2008-02-03
·TekSavvy Solutions..
·Videotron

reply to Speedy82
said by Speedy82 See Profile :

I do agree japans capacitors are very well made, and rarely pop or leak like the normal ones do.
Many of the caps that tend to blow up are cheap knock-offs. Some companies got into heaps of trouble when their parts brokers somehow got tricked into buying "lubycon" capacitors instead of "rubycon" ones... same dimensions, same markings except "lubycon" are Chinese knock-offs. Many well-known capacitor brands have run into trouble due to similarly named Chinese knock-off brands. Asus and Abit ran into major trouble due to this name game back in the 440BX days when the first major visible outbreak occurred.

As far as I can remember, all the PSUs that I have ever had to repair contained Chinese knock-off caps.

Speedy82

join:2009-09-20
reply to Speedy007
I do agree japans capacitors are very well made, and rarely pop or leak like the normal ones do.


Speedy007

@teksavvy.com

reply to Inssomniak
Another thing to look for is blown caps as well. A lot of the non japans capacitors can go, if their in a area that does not get a lot of air, so they will swell up and pop or leak, but they are repairable, just need to find the right type of capacitor. But there is still a chance, that it might have damaged something else near by it as well. But like motherboards on a pc, there is still always a good chance it might be fully salvageable.


TilhasBB
Formally Goden99
Premium
join:2000-08-05
canada
reply to Inssomniak
Another thing to try is to replace the power adapter.
I've read that the power adapters are known to fail on those 2wires.

So just swap it with a working 2wire to test.


Inssomniak
Premium
join:2005-04-06
Cayuga, ON

reply to Teddy Boom
said by Teddy Boom See Profile :

If you are buying untested 2wires, you should expect about half to be bad, mostly due to this exact problem. I have about 20 of them myself, and I've tried the reflashing thing with absolutely no luck.

I am on an IKNS remote, but most modems sync within a minute..

Hmm, I guess I need to crack out the pile of dead modems yet again. If I can breathe life into any of them, it is certainly worth a little time.
I bought a lot of "refurbished" ones, I assumed they were tested, but then again, they may have been, just on a short loop.

Teddy Boom

join:2007-01-29
Toronto, ON

reply to Inssomniak
If you are buying untested 2wires, you should expect about half to be bad, mostly due to this exact problem. I have about 20 of them myself, and I've tried the reflashing thing with absolutely no luck.

I am on an IKNS remote, but most modems sync within a minute..

Hmm, I guess I need to crack out the pile of dead modems yet again. If I can breathe life into any of them, it is certainly worth a little time.


fiestaware

join:2008-01-07
reply to Inssomniak
I have *this exact problem* with a refurbed 2700 I just took out of the box. No sync - perpetually flashing red DSL light.

I'm reading this thread with great interest.


HiVolt
29
Premium
join:2000-12-28
Toronto, ON
clubs:
·TekSavvy Solutions..
·Bell Sympatico

reply to Inssomniak
said by Inssomniak See Profile :

Recently I ran into a new irritating problem, I set up a 2700 here, tested it, put it on my DSL line here at the house, no problem, sync's fast and perfect. I give it to the customer, wont sync. I do it again to another 2700, same thing.

2 other DSL modems sync fine on the customers line.

Only difference is the loop length, here Im on a 900 meter or less loop length, and he is on a 3k meter loop.
How long did the customer wait? Could the customer be on an IKNS remote? I recently have had extremely long sync times at work on my backup DSL, both with Speedstream and 2Wire modems.

Literally takes over half an hour sometimes.

Thread on the issue here. »IKNS Remote, why so long to sync?
--
GO LEAFS GO!


Inssomniak
Premium
join:2005-04-06
Cayuga, ON
reply to G1ggidy
With what version?


Inssomniak
Premium
join:2005-04-06
Cayuga, ON


1 edit
reply to TilhasBB
Recently I ran into a new irritating problem, I set up a 2700 here, tested it, put it on my DSL line here at the house, no problem, sync's fast and perfect. I give it to the customer, wont sync. I do it again to another 2700, same thing.

2 other DSL modems sync fine on the customers line.

Only difference is the loop length, here Im on a 900 meter or less loop length, and he is on a 3k meter loop.


TilhasBB
Formally Goden99
Premium
join:2000-08-05
canada

reply to Inssomniak
Click for full size
2700
Click for full size
2701
I've just managed to recover two 2700 and one 2701 modems that wouldn't sync.

Opened them up, vacuumed the dust, and cleaned the chips (with alcohol) then re-flashed them. Syncing perfectly since.


G1ggidy

@teksavvy.com
reply to Inssomniak
I've sucsessfully fixed about 30% of my non-syncing 2wire 2700's by reflashing the firmware.

YMMV.


conundrum8472

@fishtanks.org

 reply to HNHarvey
i just fixed a netgear rangemax with this problem, by swapping that 8 pin chip.

for future reference, don't recycle chips from other routers, buy new or use one from a firmware-flashed-dead router.

HNHarvey
Premium
join:2008-11-26
Rigaud, QC
reply to CanerisErik
count me in, I have 12 so far.


An_Onymous

@teksavvy.com

reply to Inssomniak
findchips.com claims that Arrow Electronic and America II might have some. It is pending end of life.

Datasheet:
»download.siliconexpert.com/pdfs/···0616.pdf

"E-ST20184,ST20184 & E-ST20196, ST20196 PRODUCT TERMINATION NOTICE"
»app.arrownac.com/aws/nac_epcn_vi···41517034


Inssomniak
Premium
join:2005-04-06
Cayuga, ON

reply to An_Onymous
said by An_Onymous :

Not like you can order the big SoC easily from the vendor easily or that replacing the BGA would make any economic sense for you.

I would recommending looking at the driver/receiver chips in your bone pile. That's the soic-8 right next to the sticker SB10A in picture (ST516V6). It should be very common froml the analog chip vendors were selling their DSL driver/receiver chips - fancy opamp parts.

You are looking at a $1 part and a 2 minutes replacement job.
The 2wire doesnt have such a chip. It has a 100 pin flat pack frontend chip (ST20184). It does the work for sync in a 2wire., Digital out is fed into the microprocessor, and vice versa.


An_Onymous

@teksavvy.com

reply to CanerisErik
Click for full size
Not like you can order the big SoC easily from the vendor easily or that replacing the BGA would make any economic sense for you.

I would recommending looking at the driver/receiver chips in your bone pile. That's the soic-8 right next to the sticker SB10A in picture (ST516V6). It should be very common froml the analog chip vendors were selling their DSL driver/receiver chips - fancy opamp parts.

You are looking at a $1 part and a 2 minutes replacement job.


CanerisErik
Caneris
Premium,VIP
join:2007-10-03
Toronto, ON

reply to An_Onymous
said by An_Onymous :

Beyond that, not a whole lot you can do as the main SoC is likely a BGA parts as least in the case of the ST-516 V6.
Some of us have access to BGA equipment
--
Erik - Caneris - Internet solutions and more.
Forums » O Canada! » Canadian » TekSavvyGoogle exec says Canada missing web's potential »
« Dry-Loop line dropped to partial sync for unknown reasons  
page: 1 · 2


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