Можно ли отремонтировать коммутатор Cisco 3500 XL (3548) с помощью сообщений об ошибках POST?

У меня старый Cisco 3500 XL, и, похоже, у него проблемы с оборудованием. Я загрузил последнюю версию IOS и очистил все настройки.

Есть ли у кого-нибудь опыт починки ядра коммутатора? Я достаточно грамотный паяльщик SMD, могу ли я заменить / оплавить некоторые микросхемы?

Я проверил напряжения источника питания, все в пределах допуска, и никаких видимых признаков повреждения каких-либо компонентов. Некоторые чипсы горячие на ощупь.

Я понимаю, что это были EOL с 2007 года, но на электронику должна быть пожизненная гарантия. У меня нет контракта на поддержку Cisco, поэтому я не могу подать заявку. Что я должен делать?

Вывод в консоль:

switch: dir flash:
Directory of flash:/

2    -rwx  1811584   <date>               c3500xl-c3h2s-mz.120-5.WC17.bin

1799680 bytes available (1812992 bytes used)
switch: boot
Loading "flash:c3500xl-c3h2s-mz.120-5.WC17.bin"...###################################################################################################################################################################################

File "flash:c3500xl-c3h2s-mz.120-5.WC17.bin" uncompressed and installed, entry point: 0x3000
executing...

              Restricted Rights Legend

Use, duplication, or disclosure by the Government is
subject to restrictions as set forth in subparagraph
(c) of the Commercial Computer Software - Restricted
Rights clause at FAR sec. 52.227-19 and subparagraph
(c) (1) (ii) of the Rights in Technical Data and Computer
Software clause at DFARS sec. 252.227-7013.

           cisco Systems, Inc.
           170 West Tasman Drive
           San Jose, California 95134-1706



Cisco Internetwork Operating System Software
IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version 12.0(5)WC17, RELEASE SOFTWARE (fc1)
Copyright (c) 1986-2007 by cisco Systems, Inc.
Compiled Tue 13-Feb-07 15:04 by antonino
Image text-base: 0x00003000, data-base: 0x00352924


Initializing C3500XL flash...
flashfs[1]: 1 files, 1 directories
flashfs[1]: 0 orphaned files, 0 orphaned directories
flashfs[1]: Total bytes: 3612672
flashfs[1]: Bytes used: 1812992
flashfs[1]: Bytes available: 1799680
flashfs[1]: flashfs fsck took 3 seconds.
flashfs[1]: Initialization complete.
...done Initializing C3500XL flash.
C3500XL POST: System Board Test: Passed
C3500XL POST: Daughter Card Test: Passed
C3500XL POST: CPU Buffer Test: Passed
C3500XL POST: CPU Notify RAM Test: Passed
C3500XL POST: CPU Interface Test: Passed
C3500XL POST: Testing Switch Core: Passed
Error with Switch Core BIST test Phase 0.
Returns: Test Complete Low : 0x0FFFFFFF, Test Complete High  : 0xFFFFFFFE
         Test Phase Low    : 0x00000040, Test Phase High     : 0x00000000
         Test Phase Third  : 0x00000000, Test Complete Third : 0x000001F8

C3500XL POST FAILURE: Testing Switch Core: Failed
C3500XL POST FAILURE: Testing Buffer Table: Failed
C3500XL POST FAILURE: Data Buffer Test: Failed
C3500XL POST FAILURE: Configuring Switch Parameters: Failed
C3500XL POST FAILURE: Switch Core BIST failed.
C3500XL POST FAILURE: Cannot test Modules due to failure of Switch Core POST
Del Mar Failure (0th Del Mar): req system failed to init
C3500XL POST FAILURE:
C3500XL POST FAILURE: ATM: required system failed to init
C3500XL POST: Ethernet Controller Test: Passed
C3500XL POST FAILURE: MII Test: Failed
C3500XL POST FAILURE: Error waiting for Ethernet Controller and SW_PARAMS
C3500XL POST FAILURE: Initialization/POST failed
C3500XL POST FAILURE: AT: Failing because system POST failed
Exception (8192)! Debug Exception (Could be NULL pointer dereference)
CPU Register Context:
Vector = 0x00002000  PC = 0x000F36F4  MSR = 0x00029200  CR = 0x22000024
LR = 0x000F6964  CTR = 0x001DE46C  XER = 0x00000000
R0 = 0x00000000  R1 = 0x004E2580  R2 = 0x00000000  R3 = 0x00000000
R4 = 0x00000001  R5 = 0x00000000  R6 = 0x004E2718  R7 = 0x004E2718
R8 = 0x00000008  R9 = 0x00000000  R10 = 0x0000FFFF  R11 = 0x00480000
R12 = 0x42000024  R13 = 0x00000000  R14 = 0x00000000  R15 = 0x00000000
R16 = 0x00000000  R17 = 0x00000000  R18 = 0x00000000  R19 = 0x00000000
R20 = 0x00000000  R21 = 0x00000000  R22 = 0x00000000  R23 = 0x00000000
R24 = 0x00000000  R25 = 0x00000020  R26 = 0x004E2718  R27 = 0x004E2718
R28 = 0x00000020  R29 = 0x00002513  R30 = 0x00000001  R31 = 0x00000000

Stack trace:
PC = 0x000F36F4, SP = 0x004E2580
Frame 00: SP = 0x004E25A0    PC = 0x40000016
Frame 01: SP = 0x004E2618    PC = 0x000F6964
Frame 02: SP = 0x004E26A8    PC = 0x000F76DC
Frame 03: SP = 0x004E26C8    PC = 0x000E8114
Frame 04: SP = 0x004E26F0    PC = 0x001F5BF8
Frame 05: SP = 0x004E2710    PC = 0x001F5CF4
Frame 06: SP = 0x004E2748    PC = 0x0023F4DC
Frame 07: SP = 0x004E2750    PC = 0x0023E650
Frame 08: SP = 0x004E27C8    PC = 0x0023E89C
Frame 09: SP = 0x004E27E0    PC = 0x0028AF34
Frame 10: SP = 0x004E27E8    PC = 0x001E38F8
Frame 11: SP = 0x004E2808    PC = 0x001E39A8
Frame 12: SP = 0x004E2820    PC = 0x0014E220
Frame 13: SP = 0x004E28C8    PC = 0x0014E39C
Frame 14: SP = 0x00000000    PC = 0x001EB510