Barracuda Networks F80 Repair (Atom c2000 bug) - Page 1
Forum section: electronics / repair

author: nevusZ
author_rank: Newbie
timestamp: January 15, 2021, 08:00:20 pm
content: hy,I have heard about repairing a synology NAS with the same cpu as my networking appliance(intel atom c2358)https://www.eevblog.com/2020/03/10/eevblog-1288-synology-nas-dumpster-find-repair/The cpu has the same errors, I fixed some appliances by completly change the cpu (BGA soldering by a company)But this was to expensive.I wonder if it would be possible to do the same as on the synology nas?!My appliance is a Barracuda Networks NG Firewall F80.It is manufactured by Lanner as far as I know. The mainboard is from Microstar Internation - MSI.I made some pictuers of the board.I dont have any description of the appliance.Is anyone able to help me get this done?This is my first post in EEVblog, repairing stuff is a good thing instead of trash the usefull stuff.https://ibb.co/jVY14Z0https://ibb.co/RCR4f7Whttps://ibb.co/fDyz6MRhttps://ibb.co/1XVM7d1https://ibb.co/D1vn8J6https://ibb.co/JkrpsBF

author: danikd
author_rank: Newbie
timestamp: September 15, 2021, 08:51:26 pm
content: Hello,I have same firewall, only beep and blue and blue LED on start, no sign of life. Its same as on yours? How do you resolve it? Thx for info. Daniel

author: perieanuo
author_rank: Frequent Contributor
timestamp: September 16, 2021, 11:03:23 am
content: Quote from: danikd on September 15, 2021, 08:51:26 pmhe just explained, changing or reballing the cpu

author: perieanuo
author_rank: Frequent Contributor
timestamp: September 16, 2021, 11:07:25 am
content: Quote from: nevusZ on January 15, 2021, 08:00:20 pmyou skipped the diagnose part, verifying if the processor is not soldered correctly, you didn't mentioned what's not working, does it boot etc...try starting it pressing the cpu if it doesn't boot, see if it displays at least first page, or give us details about the failure

author: wraper
author_rank: Unknown
timestamp: September 16, 2021, 11:10:23 am
content: Quote from: perieanuo on September 16, 2021, 11:03:23 amIt can be repaired by simply connecting a pull-up resistor between LPC_CLKOUT0 and/or LPC_CLKOUT1 and +3.3V power rail. The same as an official fix for Synology NAS, no CPU replacement needed. The issue is if LPC is exposed on particular PCB and if you can find it.

author: wraper
author_rank: Unknown
timestamp: September 16, 2021, 11:21:02 am
content: Potentially this could be it. Or some other pin header.

author: perieanuo
author_rank: Frequent Contributor
timestamp: September 17, 2021, 07:31:29 am
content: Quote from: wraper on September 16, 2021, 11:10:23 amthat's good news for op, tksbut for me that mobo doesn't look like a syno pcb

author: wraper
author_rank: Unknown
timestamp: September 17, 2021, 09:01:57 am
content: Quote from: perieanuo on September 17, 2021, 07:31:29 amIt has nothing to do with Synology in particular. It's Intel CPU silicon issue and fix/workaround is the same for any device where it fails.

author: danikd
author_rank: Newbie
timestamp: September 18, 2021, 10:51:13 am
content: Quote from: wraper on September 16, 2021, 11:21:02 amHello, many thx for info. How to find the proper pins? 3.3V is easy ... BUr CLK pins ...

author: wraper
author_rank: Unknown
timestamp: September 18, 2021, 11:09:50 am
content: I would probably check if any pin on particular connector has 3.3V on it. If it has, make a wire with two 1 pin DuPont connectors and a 100 ohm resistor in series. Then try connecting it between 3.3V pin and every other pin except GND and try booting with each connection variant. If it boots, you have found the right pin and can solder the resistor permanently. By this method, chance of causing any further damage is small and chance of fixing the thing quite high.In any case, without having another working board and oscilloscope to find the CLK signal, you wouldn't know for sure without a hit and miss testing.

author: danikd
author_rank: Newbie
timestamp: September 19, 2021, 11:21:36 am
content: Thx for info, I will test it and post results. Nice day! Daniel

author: danikd
author_rank: Newbie
timestamp: September 26, 2021, 08:06:28 pm
content: Hello, I measured pins on this connector and :1) 3.3V2) 3.3V3) 3.3V4) 3.3V5) 3.3V6) 3.3V7) 3.3V1.5V9) Ground10) Ground11) PIN Not Present12) 0VIts the right connector?Thx for info ...Daniel

author: wraper
author_rank: Unknown
timestamp: September 26, 2021, 08:48:37 pm
content: Hard to tell when interface is not actually running due to failure. Pinout is completely different among manufacturers. Quantity of what seems to be data lines is about right for LPC. Try attaching pull-up resistor from 3.3V to pin 12 and if does not help, to 8. Just be sure to attach it to actual 3.3V power rail and not just data line with 3.3V logic high.

author: danikd
author_rank: Newbie
timestamp: September 27, 2021, 04:55:38 pm
content: But how to find proper 3.3V rail ... somewhere on the board, not on connector? Many thx. Daniel

author: wraper
author_rank: Unknown
timestamp: September 27, 2021, 06:01:55 pm
content: Well, it's likely on the connector. I would look if there is a thicker trace to some pin with 3.3V. Or you could check if some nearby capacitor has 3.3V on it. Then solder to that or test continuity to connector pins.

author: danikd
author_rank: Newbie
timestamp: October 31, 2021, 10:23:11 pm
content: Hello, sorry for late reply, I was very very busyHope this weekend I will test it. Thicker trace with 3.3V already found. Nice day! Daniel

author: amyk
author_rank: Super Contributor
timestamp: November 01, 2021, 01:52:09 am
content: Look up information on what ICs are on the board and whether they connect to the LPC bus. If you find one, you can use it to find the clock pin.

author: danikd
author_rank: Newbie
timestamp: December 27, 2021, 09:19:36 am
content: Hello,sorry for my late reply, I was very busy. Ty both pins and nothing work. Maybe there is another damage, because original power suplly was shorted. I know nothing about history of this device, so maybe time to move to another deviceMany thx for help on this best forum.PF2022Dan