Dead Sonance DSP 2-150 MKII Amplifier after failed update - Page 1
Forum section: electronics / repair

author: JimKnopf
author_rank: Frequent Contributor
timestamp: November 04, 2021, 03:52:00 pm
content: Hello,i got a Sonance DSP 2-150 MK II Amplifier here for repair. The owner atempted to update the device but powered off the device during update process.Now the device is dead and will not start and cannot be updated again because update works via TI LM Flash Tool on the network interface. But since the device is dead, ethernet doesn't work, no ip, no access via LM Flash Tool.The device has an TM4C1294NCPDT Corex M4. There are two eeproms, an 25L1606E which is empty and a 24LC64-I which as only few bytes in it.I desoldered both and read it via external programmer.The pcb has 2 connectors exposed, one UART which is deactivated and a JTAG connection. I couldn't get the LM Flash Tool to work with any of my jtag devices because it supports only few listed devices (NIC, ICDI eval board, FTDI Red Probe or serial UART).I'm able to connect and work with a segger j-link. I read out the 1MB flash area and compared it with the firmware update file.Maybe some code is missing or placed on the wrong sector during update. Can someone help me figure out on what address i have to place the firmware data to get the device to work?The firmware file is from here:https://danainnovationsupport.zendesk.com/hc/en-us/article_attachments/360057316992/Sonance2-150MKII_v2.2.2150.binDatasheet for the Cortex M4 is here:https://www.ti.com/lit/gpn/tm4c1294ncpdtThe memory dump is attached.

author: tv84
author_rank: Super Contributor
timestamp: November 04, 2021, 04:17:21 pm
content: Quote from: JimKnopf on November 04, 2021, 03:52:00 pmWhat were your conclusions? Can you provide the flash dump? What about the boot log via UART?

author: JimKnopf
author_rank: Frequent Contributor
timestamp: November 04, 2021, 06:17:43 pm
content: @tv84The flash dump was attached to my post. UART seems to be disabled.

author: tv84
author_rank: Super Contributor
timestamp: November 06, 2021, 10:25:23 am
content: Jim,From a static point I cant help you very much.The FW .bin that you link is all correctly loaded in your dump starting at 0x4000. So the interruption didnt interrupt the loading of the FW file. The problem are the actions after loading.I dont recognize the initial 0x2000 bytes of your dump as a valid ARM boot block... So can't help there. It looks like something destroyed you boot zone... (? ?)The best (only? ?) solution i would say is get a dump from a similar device and overwrite all your flash.

author: JimKnopf
author_rank: Frequent Contributor
timestamp: November 09, 2021, 06:17:31 pm
content: I fixed it. I bought a damaged one that was sold for parts from ebay. I saw on the images that the LED were on. That means basic function works.I hooked up my Segger J-link and read the flashmemory. The startcode looks different from the device i already have here for repair.I put this new memory dump on the device i have here for repair and it started. All works well. Work is done.

author: L14MDP
author_rank: Newbie
timestamp: August 05, 2024, 12:12:37 pm
content: Hi @JimKnopfI have a DSP 2-150 which was all working fine and then after being turned off for a few months I am getting no network activity. On starting the unit the amber light on the network ports lights briefly, but then after that I have no lights or activity on the port.Sonance are saying they can’t help fix it and I was wondering if you might have any ideas on what I should try? The amp itself works as an amp in that I can get audio playing from it, however during troubleshooting steps I have factory reset the amp and so lost the DSP profile that was loaded into it.

author: JimKnopf
author_rank: Frequent Contributor
timestamp: August 05, 2024, 02:27:05 pm
content: @L14MDP It's been a while since I had the device here for repair. I fixed it but I can't remeber all the details. I can look at my records on Thursday or Friday.

author: rfengg
author_rank: Regular Contributor
timestamp: November 13, 2024, 05:27:21 pm
content: Hi All,Just procured a dead Sonance DSP 2-150 amp from Ebay and came across this thread......since my knowledge of controllers is 0, wonder if anyone has the schematics or service manual for this?

author: JimKnopf
author_rank: Frequent Contributor
timestamp: November 13, 2024, 05:41:44 pm
content: I don't have schematics. I only can provide firmware file for the DSP 2-150.

author: rfengg
author_rank: Regular Contributor
timestamp: November 13, 2024, 05:59:45 pm
content: Thanks Jim.....in case I need it I will let you know as I don't know where the problem is yet.If this is indeed a flashing issue, could you please let me know how to go about this as I have not done anything similar.

author: JimKnopf
author_rank: Frequent Contributor
timestamp: November 13, 2024, 07:29:44 pm
content: First of all, test if there is any shorted circuit. If not, make a backup from the existing eprom. Flash the file from the wetransfer link i provided via msg.

author: dndwlc
author_rank: Newbie
timestamp: December 21, 2024, 07:45:28 pm
content: @JimKnopf Hope this message finds you well. I was wondering if you might be able to help me out by providing the firmware/dump file that you have.I was trying to perform an update to the latest firmware and in that process I bricked my amplifier.I am very familiar with the circuitry inside as I've repaired a couple of these, but never a firmware Issue.Here's the strange thing I could power up the amplifier the ethernet lights come on, and I could connect to itwith the Texas instrument software via ethernet and load the firmware again it will get to 100% but the amplifier will never reboot.I followed the instructions in the update PDF where it specifies to use a specific Mac address not the one from the Amplifier. I followed all the instructions to the tea.But still no go.my email isdndwlc@gmail.comsergio

author: JimKnopf
author_rank: Frequent Contributor
timestamp: December 21, 2024, 10:07:45 pm
content: Check your PM. I send you a we-transfer link.

author: rfengg
author_rank: Regular Contributor
timestamp: December 23, 2024, 03:24:48 pm
content: Thanks Jim.....mine was fortunately a hardware issue....got it sorted out......thanks for your help anyways!!!