ziggurcat
Major Contributor
Topping provided me with v1.14, and I was able to document the issue late last night. If you're interested (let me know if you have an issue viewing):
Target_SourceFR_disappears.MOV
drive.google.com
-
Welcome to ASR. There are many reviews of audio hardware and expert members to help answer your questions. Click here to have your audio equipment measured for free!
Topping DX5 II
- Thread starter Matias
- Start date
Topping provided me with v1.14, and I was able to document the issue late last night. If you're interested (let me know if you have an issue viewing):
drive.google.com
Strange. Mine doesn't have it. Just generic Topping Company information at the bottom with voltage and watt details.
ziggurcat
Major Contributor
It's possible that I am mis-remembering, but I know someone posted an image of the sticker either here or the other thread because there was a kind of hilarious typo. If I find it, I will cite the link. The other way would be to look in Topping Tune, but since your unit doesn't power on anymore, you can't check it that way.
Might be a sticker inside the unit. I think I can barely make one out, but can't really reach it. Will check tomorrow when I have my Allen key.
ziggurcat
Major Contributor
I did mis-remember. This is the image I was thinking about:
Topping DX5 II
There were some issues saving the PEQ settings. If I just switch the output instead of using the remote to change the user settings, then the PEQ won't follow the output changes. I talked to an engineer at Topping, and they said they're going to fix this in the next firmware update. I'm gonna...
www.audiosciencereview.com
Yeah, that's basically what I have at the bottom, printed directly onto the metal case though, not as a sticker.
ziggurcat
Major Contributor
Unless it gives you that information scanning the QR code on the side of the device?
That just gives me the SN number of which I posted the batch here once (26035*****).
I was able to find it in Topping Tune when you go to settings. Mine was recently bough and HW revision is 0.17.
Since your unit is dead I guess checking with Topping Tune is not going to work unfortunately.
Revision 0.17? Well that's great news that there's a new revision around. Where did you get yours from?
I went to the High End Vienna convention, and I bought the one that was on display at Topping booth for 30% off. The guy at the booth also told me that the web support for Topping Home will be coming to DX5 II as well (didn't disclose the date).
I tried home.toppingaudio.com website and connecting DX5 II to it is still not working. However, the iOS app works flawlessly (connected through BT).
Then I'll probably wait a little bit before getting a new one, to let old batches sell out.
That gives me hope that the newer revision might've solved those early failure points.
My adventure continues. I now have the Allen key to release the front panel. Once you remove the two screws from the back, you need to stick it in all the way through that same hole where the screws were to access the screws that hold the front panel to the case. The whole tool is 15cm long (including the handle). The actual metal arm is 12,5cm long and is just enough to reach the front panel screws.
My board looks the same as this one from August 2025, so it might be a revision 0.15.
A first (unplugged) resistance check with the multimeter on all the power lines showed no obvious short (tested lines +15V, -15V, 11.8V, 11V, +5.8V, -5.8V, 3.3V, 1.8V and 0.9V).
I believe the next step will be a live (plugged-in) test to check if all those lines actually reach their indicated voltages when powered on. Any advice from people experienced in electronics on what to check is welcome.
My board looks the same as this one from August 2025, so it might be a revision 0.15.
A first (unplugged) resistance check with the multimeter on all the power lines showed no obvious short (tested lines +15V, -15V, 11.8V, 11V, +5.8V, -5.8V, 3.3V, 1.8V and 0.9V).
I believe the next step will be a live (plugged-in) test to check if all those lines actually reach their indicated voltages when powered on. Any advice from people experienced in electronics on what to check is welcome.
ziggurcat
Major Contributor
Likely, yes. This was the image posted, I think around the time when HW v0.16 was noticed:
Topping DX5II teardown
Hi. Could you please tell me how to disassemble the DX5 II? I took mine to a repair shop, but they didn't know how to disassemble it, so they refused to repair it. I’m interested in this as well, because once the warranty expires, I might try replacing the ATAZ power supply with a Mean Well or...
www.audiosciencereview.com
It looks like Topping changed the 4.4mm board, probably to address some of the concerns people had with that particular headphone output. No idea what was changed with v0.17, unless that change in v0.16 was what caused the reported issues with that headphone output, and v0.17 was the fix from that? *shrugs*
- Joined
- Jul 5, 2023
- Messages
- 359
- Likes
- 373
Question and maybe a hint to not brick the device. I have two (you can rename them to get to the right one from the android app). My theory is the insertion or removal of the 4.4 balanced shorts something. The past two firmware updates kept every settings (older versions did not, easy to set back up but takes times, especially with all the updates. WHAT I DO: Turn the power switch off on the back of the device. Insert 4.4 turn on. And the other side, play your music then turn off the switch in the back and remove. Basically have the rear power switch off when inserting or removing the 4.4. Past two firmware updates I lose no settings doing this many times. QUESTION EXPERTS: Is anyone else doing this and if so has anyone bricked a unit. If so I will go with the standard jack, 1/4 inch or whatever it is, I already have those cords for my 4 main cans and swap them to be safe. SO WHAT SAY YOU EXPERTS. Has anyone bricked a unit with the rear power off when inserting or removing the 4.4 balanced when the unit is totally powered off with the switch in the back. THANKS FOR THE INFO, may help many of us.
ziggurcat
Major Contributor
None of that is necessary. The reason why things occasionally get reset is likely a technical one, not the result of a short from a headphone output. The past two updates haven't reset the settings for anyone, and I doubt people were doing what you described (I certainly haven't). There's a lot of misinformation about the 4.4mm jack that has caused people to be unnecessarily fearful, IMO.
With any electronic device, unplugging/plugging in cables while the unit is completely off will always be the safest way of doing things.
Sokel
Grand Contributor
- Joined
- Sep 8, 2021
- Messages
- 11,866
- Likes
- 13,247
Have a look around for "F" marked components on the PCB.
There's a new fashion some using some "recoverable" SMD type fuses which are not recoverable at all at the end of the day
If you find any check them for continuity. That's where I would start along with the basic voltage tests.
I think I've reached my limit as to where I'm able to check this on my own.Have a look around for "F" marked components on the PCB.
There's a new fashion some using some "recoverable" SMD type fuses which are not recoverable at all at the end of the day
If you find any check them for continuity. That's where I would start along with the basic voltage tests.
I mostly used the available testing spots on the board for the different voltage rails.
15V: no obvious short, measures fine at actual 15.1V.
+/-15V no obvious short, but also doesn't come to live.
+/-5.8V no obvious short, but also doesn't come to live.
0.9V, 1.8V, and 3.3V: no obvious shorts, measure fine only in firmware update mode. In normal mode 1.8V and 3.3V hang at around 0.8V and 0.9V stays at basically 0V.
11.8V: no obvious short, measures fine at actual 11.44V.
5V: no obvious short, rail measures only 4.3V (which oddly seems to be by design if you check the buck converter section).
Booting into firmware update mode sometimes tries to power the USB on, but doesn't really work. This happens in those moments where the display backlight also turns on, but nothing else happens (nothing is displayed). This only happens in like 1 out of 6 firmware update mode attempts.
Sokel
Grand Contributor
- Joined
- Sep 8, 2021
- Messages
- 11,866
- Likes
- 13,247
I guess you tried the usual, different ports, different PC, unistall/install fresh, etc.
A good idea would also be to erase all the entries at device manager (including/specially) the hidden ones, damn XMOS creates a new one every time someone is changing ports.
What's weird is that the port is attempting power cycles as if it's shorting and recovering.
USB not working is a downstream effect of whatever else is wrong with the unit. It doesn't need USB, as it's not a USB powered unit.
The problem is that the DX5 II doesn't even boot. No relay click, nothing on the display. The backlight of the display doesn't even get power most of the time when powered on in firmware update mode.
