29mile Posted September 21, 2020 Share Posted September 21, 2020 Hi I now have exactly same issue with my Katana. Works perfectly with Volumio but only very faint sound through speaker. Same solution I hope as it is a superb piece of equipment. Thanks Link to comment
rritchey Posted September 21, 2020 Share Posted September 21, 2020 Sadly I think I may have the same problem. Katana has been performing as expected since it was received but it now does not produce any audio and if left on for more than a few minutes starts emitting a moderate volume of noise. This is a Katana connected with an Isolator 1.3 to an RPi 3Bv1.2 running dual power with a linear 5v supply for the microcontroller and a high quality switching supply connected to the isolator. HW rev for the MC, Katana, and Opamp are 1.2. FYI, I've tried with and without the isolator in circuit (with appropriate change to J30) without a change in behavior. I've also flashed to the latest firmware for the controller which did succeed. LEDs on the MC are both solid green. I've also tried fresh installs of both DietPi and Volumio without any change in problem. At this point I'm out of ideas. Link to comment
Audio_Allo Posted September 22, 2020 Share Posted September 22, 2020 13 hours ago, 29mile said: Hi I now have exactly same issue with my Katana. Works perfectly with Volumio but only very faint sound through speaker. Same solution I hope as it is a superb piece of equipment. Thanks Forwarded PM please check Link to comment
Audio_Allo Posted September 22, 2020 Share Posted September 22, 2020 7 hours ago, rritchey said: Sadly I think I may have the same problem. Katana has been performing as expected since it was received but it now does not produce any audio and if left on for more than a few minutes starts emitting a moderate volume of noise. This is a Katana connected with an Isolator 1.3 to an RPi 3Bv1.2 running dual power with a linear 5v supply for the microcontroller and a high quality switching supply connected to the isolator. HW rev for the MC, Katana, and Opamp are 1.2. FYI, I've tried with and without the isolator in circuit (with appropriate change to J30) without a change in behavior. I've also flashed to the latest firmware for the controller which did succeed. LEDs on the MC are both solid green. I've also tried fresh installs of both DietPi and Volumio without any change in problem. At this point I'm out of ideas. Forwarded PM please check Link to comment
Metamodern Posted September 29, 2020 Share Posted September 29, 2020 I am experiencing the same issue I think. I tried: 1) 2 PSU's- One to Micro Controller, and one to RPI. J26 in position 2&3, and J30 open 2) 1 PSU to micro controller with jumpers as per instructions 3) 3 PSU's to Micro Controller, Katana, and RPI with jumpers as per instructions My preamp isn't on mute. I have the correct input selected, volume is turned up. Tried different cables from Op Amp board to Preamp. The Katana shows up in Roon with no problems, and I used the Diet Pi image from the install instructions, and made sure the output was to the Katana HAT. HELP! I do not have a voltage tester. Edit: It is the THD+N 1.2 board Link to comment
Audio_Allo Posted September 29, 2020 Share Posted September 29, 2020 3 hours ago, Metamodern said: I am experiencing the same issue I think. I tried: 1) 2 PSU's- One to Micro Controller, and one to RPI. J26 in position 2&3, and J30 open 2) 1 PSU to micro controller with jumpers as per instructions 3) 3 PSU's to Micro Controller, Katana, and RPI with jumpers as per instructions My preamp isn't on mute. I have the correct input selected, volume is turned up. Tried different cables from Op Amp board to Preamp. The Katana shows up in Roon with no problems, and I used the Diet Pi image from the install instructions, and made sure the output was to the Katana HAT. HELP! I do not have a voltage tester. Edit: It is the THD+N 1.2 board Forwarded PM please check Link to comment
frost09audio Posted November 18, 2020 Share Posted November 18, 2020 Hello Sounds like I'm having the same issue others here have described. Purchased the Katana with Sound Quality output stage in May. It worked flawlessly until a couple of weeks ago. Now only the slightest bit of music can be heard when I turn my amp up to full volume. All lights come on and the status light indicates all is okay. I am using two power sources (configured as recommended in the manual) and have verified they are both working fine. I have also noticed that there is a high pitched noise that seems to come from the micro controller when I switch on the opamp via switch3. I have a recording of this noise if necessary. Thanks Link to comment
Audio_Allo Posted November 19, 2020 Share Posted November 19, 2020 4 hours ago, frost09audio said: Hello Sounds like I'm having the same issue others here have described. Purchased the Katana with Sound Quality output stage in May. It worked flawlessly until a couple of weeks ago. Now only the slightest bit of music can be heard when I turn my amp up to full volume. All lights come on and the status light indicates all is okay. I am using two power sources (configured as recommended in the manual) and have verified they are both working fine. I have also noticed that there is a high pitched noise that seems to come from the micro controller when I switch on the opamp via switch3. I have a recording of this noise if necessary. Thanks Forwarded PM please check Link to comment
rritchey Posted November 20, 2020 Share Posted November 20, 2020 Sorry to hear about your problem. I'm still waiting on resolution to mine. I was asked to ship my unit back but it's been stuck in Bangalore customs for the last month. Hopefully it will clear soon. Link to comment
WillB1 Posted November 25, 2020 Share Posted November 25, 2020 Hi, I am having the same problem here. The capacitor on the controller board seems broken. Is an updated controller board available or is just the capacitor being replaced? Thanks! Link to comment
Audio_Allo Posted November 26, 2020 Share Posted November 26, 2020 11 hours ago, WillB1 said: Hi, I am having the same problem here. The capacitor on the controller board seems broken. Is an updated controller board available or is just the capacitor being replaced? Thanks! Forwarded PM please check Link to comment
wilkie Posted November 26, 2020 Share Posted November 26, 2020 On 11/21/2020 at 5:20 AM, rritchey said: Sorry to hear about your problem. I'm still waiting on resolution to mine. I was asked to ship my unit back but it's been stuck in Bangalore customs for the last month. Hopefully it will clear soon. I'm in exactly the same boat. Link to comment
toolapc Posted November 28, 2020 Share Posted November 28, 2020 Hi I have the same issue here. The MC doesn't seem to work, maybe is broken. There is a little noise and no sound comes out. Please help me. Thanks Link to comment
bobspongieux Posted November 28, 2020 Share Posted November 28, 2020 @Audio_Allo Do you have a real definitive fix, or you will be sending new units again and again until all the warranties are expired? (mine is surely expired by the way...) Link to comment
Audio_Allo Posted November 30, 2020 Share Posted November 30, 2020 On 11/28/2020 at 7:54 PM, bobspongieux said: @Audio_Allo Do you have a real definitive fix, or you will be sending new units again and again until all the warranties are expired? (mine is surely expired by the way...) Forwarded PM please check Link to comment
Audio_Allo Posted November 30, 2020 Share Posted November 30, 2020 On 11/28/2020 at 7:47 PM, toolapc said: Hi I have the same issue here. The MC doesn't seem to work, maybe is broken. There is a little noise and no sound comes out. Please help me. Thanks Forwarded PM please check Link to comment
Biarritz Posted June 11, 2021 Share Posted June 11, 2021 Hi, I have the same issue, only very vage sound when amp volume is full open and sound is also distorted. Please advice. Thanks Link to comment
Audio_Allo Posted June 11, 2021 Share Posted June 11, 2021 6 minutes ago, Biarritz said: Hi, I have the same issue, only very vage sound when amp volume is full open and sound is also distorted. Please advice. Thanks Forwarded PM please check Link to comment
wilkie Posted June 17, 2021 Share Posted June 17, 2021 On 6/11/2021 at 9:27 PM, Biarritz said: Hi, I have the same issue, only very vage sound when amp volume is full open and sound is also distorted. Please advice. Thanks Just FYI, I sent mine back last year around the time of posting and it's still yet to be returned, I also haven't had an update for about 3 months Link to comment
Audio_Allo Posted June 17, 2021 Share Posted June 17, 2021 5 hours ago, wilkie said: Just FYI, I sent mine back last year around the time of posting and it's still yet to be returned, I also haven't had an update for about 3 months We will take it up and you will get reply soon through email. Link to comment
piter Posted July 26, 2021 Share Posted July 26, 2021 I have the same issue with Katana - the controller board is very hot. The sound volume is very low and distorted ... Please let me know what I can do. Link to comment
Audio_Allo Posted July 26, 2021 Share Posted July 26, 2021 4 minutes ago, piter said: I have the same issue with Katana - the controller board is very hot. The sound volume is very low and distorted ... Please let me know what I can do. Forwarded PM please check Link to comment
Biarritz Posted July 26, 2021 Share Posted July 26, 2021 Mine is away for over a month now. Have not heard anything form my supplier. Will call again today Link to comment
trentgd Posted November 21, 2021 Share Posted November 21, 2021 I have exactly this problem too - it stopped outputting sound and the controller board is now very hot (I had done no software updates, etc..). Please let me know how to fix or replace. Thank you! Link to comment
Biarritz Posted November 21, 2021 Share Posted November 21, 2021 I had a refund, because Katana is no longer in production Link to comment
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