BOCTOK55 Posted January 26, 2017 Share Posted January 26, 2017 This started last night. I was playing along with my music, using headphones and all of a sudden, the amp did this restart. I got the 4 blinking lights for a few seconds and then it went back to normal, although, not on the preset that it was on. I thought it was just a glitch and went on playing, after I had set the preset and started the song again. After a few minutes, it did it again. Power supply going out? I highly suggest for the next firmware/app update, some sort of function test. Quote Link to comment Share on other sites More sharing options...
jdavidboyd Posted January 27, 2017 Share Posted January 27, 2017 Overheating of electronics can cause a restart, or a loose power connection. You have plenty of airflow space around your amp, and are all your power cord connections tight? Quote Link to comment Share on other sites More sharing options...
BOCTOK55 Posted February 3, 2017 Author Share Posted February 3, 2017 Plugs are all good and I doubt it was an overheating problem. I keep my practice room right at 60 degrees and I had only been playing for 10 minutes or so, at low volume. Quote Link to comment Share on other sites More sharing options...
BOCTOK55 Posted February 3, 2017 Author Share Posted February 3, 2017 Plugs are all good and I doubt it was an overheating problem. I keep my practice room right at 60 degrees and I had only been playing for 10 minutes or so, at low volume. And it did it again this evening, after about 20 minutes. Quote Link to comment Share on other sites More sharing options...
sych0 Posted March 6, 2017 Share Posted March 6, 2017 Mine was doing the same thing. Would randomly reboot back to the first preset and sometimes light up every 3rd or so led on the led ring around the volume knob. Had to bring it to line 6 to get it fixed. They had to swap out the motherboard or whatever they call the main board. $100 (if I recall correctly) since it was out of warranty Quote Link to comment Share on other sites More sharing options...
BOCTOK55 Posted March 28, 2017 Author Share Posted March 28, 2017 Well, that kind of sucks. I don't suppose that they are doing any research to find out what component on the board is causing the problem. Quote Link to comment Share on other sites More sharing options...
pberrin Posted April 27, 2017 Share Posted April 27, 2017 Hi there, Same problem here. After checking everything (cables, iPad, Mac, reset coreaudio, temp, power source, reloaded the firmware etc …) I finally found out that it was a specific preset that was causing the reboot. I deleted it immediately and now the amp do not reboots anymore. Hope this helps. Quote Link to comment Share on other sites More sharing options...
Mitos84 Posted May 1, 2017 Share Posted May 1, 2017 Hi,I ve got a similar problem, I own an amplifi 75 and after I used for some minutes, different exact time every time it happens, it crashes with a high and hissing sound and then restarts. Can anyone help or has the same problem Quote Link to comment Share on other sites More sharing options...
pberrin Posted May 22, 2017 Share Posted May 22, 2017 Hi there, Same problem here. After checking everything (cables, iPad, Mac, reset coreaudio, temp, power source, reloaded the firmware etc …) I finally found out that it was a specific preset that was causing the reboot. I deleted it immediately and now the amp do not reboots anymore. Hope this helps. Sorry, the randomly reboots are still there. So the cause it is not only the preset … :( :( I decided to bring it to my music shop. They have had 3 random reboots during the 2 first days of testing but since then (10 days) no more reboots at all …:huh: So they don't know what to do and which part they need to replace (main board or power supply). They called Yamaha but they do not know anything about this problem. I'll keep you updated. It would be great if Line6 could give the dealers some informations on how to investigate that kind of problem.;) Quote Link to comment Share on other sites More sharing options...
BOCTOK55 Posted June 11, 2017 Author Share Posted June 11, 2017 Sorry, the randomly reboots are still there. So the cause it is not only the preset … :( :( I decided to bring it to my music shop. They have had 3 random reboots during the 2 first days of testing but since then (10 days) no more reboots at all …:huh: So they don't know what to do and which part they need to replace (main board or power supply). They called Yamaha but they do not know anything about this problem. I'll keep you updated. It would be great if Line6 could give the dealers some informations on how to investigate that kind of problem.;) I went ahead and ordered a main board replacement from Full Compass ($125). Hopefully, that will do the trick. If not, I'll order the power supply. They stock both. I have yet to install the new main board, but I'll keep you posted. Quote Link to comment Share on other sites More sharing options...
stepiko Posted June 16, 2017 Share Posted June 16, 2017 I went ahead and ordered a main board replacement from Full Compass ($125). Hopefully, that will do the trick. If not, I'll order the power supply. They stock both. I have yet to install the new main board, but I'll keep you posted. I'm really looking forward to your report here, миÑтер ВоÑток, as I have same problem at the moment. 'll try to delete any custom preset for a while. as advised above. Just in case. Quote Link to comment Share on other sites More sharing options...
stepiko Posted June 19, 2017 Share Posted June 19, 2017 UPD: I've removed any custom preset from device library and it works for me. No any restarts observed for two days at least. I'll put my custom presets from cloud one-by-one to get my sound back but avoid broken preset uploaded. What's a useful thread! Quote Link to comment Share on other sites More sharing options...
aleroux Posted September 10, 2017 Share Posted September 10, 2017 Hi, I have had the same problem with an Amplifi 150: 4 blinking LED and no LED around the main button. No sound produced by any way(direct plug guitar, bluetooth, USB). Strange, all the other fuctions are working. Bluetooth OK, USB OK (Amplifi seen by the PC), firmware upgrade working. I have opened my amplifier. All pover supply voltage OK. By the way, it is possible to convert from 220V to 115V by adding a jumper (I've moved from Europe to the US: no more transformer !!!) I had to buy a main board and replace the old one. Amplifi is running again! (cost: $125, not happy) I have noticed a Micro SD memory card. When removed, nothing is working. I have removed this Micro SD from my NEW BOARD, made a COPY to the Micro SD on the OLD board and reinstalled back to the OLD board. Then upgraded software. Guess what: the original (OLD) main PC board is working again on the Amplifi. The problem is only a software problem. Hint: I have made a copy of the new Micro SD for the future. Yours, André 1 Quote Link to comment Share on other sites More sharing options...
glip Posted November 1, 2017 Share Posted November 1, 2017 I am also having this issue - or something similar. When playing - at about 1/2 volume, the amp would seem to shutdown. Turning it off and on would bring it back. I have a hunch its a preset, maybe I am over compressing too much when I go to a solo volume. Have to check my presets and see if that fixes. Its very intermittent and does seem like the amp may be overheating or protecting itself. Anyone have a thought? Quote Link to comment Share on other sites More sharing options...
BOCTOK55 Posted February 7, 2018 Author Share Posted February 7, 2018 Hi, I have had the same problem with an Amplifi 150: 4 blinking LED and no LED around the main button. No sound produced by any way(direct plug guitar, bluetooth, USB). Strange, all the other fuctions are working. Bluetooth OK, USB OK (Amplifi seen by the PC), firmware upgrade working. I have opened my amplifier. All pover supply voltage OK. By the way, it is possible to convert from 220V to 115V by adding a jumper (I've moved from Europe to the US: no more transformer !!!) I had to buy a main board and replace the old one. Amplifi is running again! (cost: $125, not happy) I have noticed a Micro SD memory card. When removed, nothing is working. I have removed this Micro SD from my NEW BOARD, made a COPY to the Micro SD on the OLD board and reinstalled back to the OLD board. Then upgraded software. Guess what: the original (OLD) main PC board is working again on the Amplifi. The problem is only a software problem. Hint: I have made a copy of the new Micro SD for the future. Yours, André I must admit that I haven't replaced the main board yet, even though I have the new replacement. When I opened the back access panel, I saw that all of the plugs had been smothered with hot glue and I didn't go any further with the repair. How difficult was it to remove all of the glue from the plugs? I didn't want to damage any traces on the board by trying to pry off the glue. I did see the SD card and considered pulling it out to inspect, but if I recall correctly, it had a dab of glue on it as well. Someone really went crazy with the hot glue gun. Quote Link to comment Share on other sites More sharing options...
bsewart Posted March 18, 2018 Share Posted March 18, 2018 use a hobby knife and cut the glue at the join of the connector/socket. You only need to be able to separate connector from socket, not remove all the glue. do it slowly, carefully and while you are positioned comfortably and not awkwardly. be extremely careful not to bang the board against anything or slip with the knife etc. If you plan on reapplying glue, then I would use silicon. I doubt it would be actual hot glue as I am sure the amp would get hot and melt it if it was. I have made that mistake on electronics before! good luck! Quote Link to comment Share on other sites More sharing options...
godsake Posted March 24, 2019 Share Posted March 24, 2019 On 4/27/2017 at 2:16 AM, pberrin said: Hi there, Same problem here. After checking everything (cables, iPad, Mac, reset coreaudio, temp, power source, reloaded the firmware etc …) I finally found out that it was a specific preset that was causing the reboot. I deleted it immediately and now the amp do not reboots anymore. Hope this helps. What kind of preset? Quote Link to comment Share on other sites More sharing options...
Reiver007 Posted March 26, 2019 Share Posted March 26, 2019 Hello Aleroux, I'm having the same issue with the SDCARD but mine is burned. Can you share a copy of the SDCARD via a file (IMG) via Onedrive of Google Drive? Please help me running this great amp again! Link to upload image: https://drive.google.com/drive/folders/1HDSLeb-2eNz3aEVEN_ja3OhJ0Fy3kyXr Reinier NL Quote Link to comment Share on other sites More sharing options...
aleroux Posted March 26, 2019 Share Posted March 26, 2019 Hi, I have no way to directly contact you. André Quote Link to comment Share on other sites More sharing options...
cbaloch Posted March 24, 2020 Share Posted March 24, 2020 Hello aleroux, I'm having the same issue with my Amplifi 75, bought it second hand to get me through the next few months with COVID-19. It worked fine for the first couple of days, but then started cutting out, at first only occasionally, but now it has become not usable. any chance you can post the SD card image on this thread in a zip file or similar? Would love to try it before I toss the damn thing. Thanks, Christian Quote Link to comment Share on other sites More sharing options...
BigWolf64 Posted April 15, 2020 Share Posted April 15, 2020 HI, I also bought a used Amplifi 150.Same problem. Works good for a couple of minutes, then it starts to reboot every 15 seconds or so. Quote Link to comment Share on other sites More sharing options...
Memtimen Posted June 30, 2020 Share Posted June 30, 2020 same problem here... Quote Link to comment Share on other sites More sharing options...
we_amplify Posted September 22, 2020 Share Posted September 22, 2020 and here!! have they issued a kill command?? Quote Link to comment Share on other sites More sharing options...
Ondracer1989 Posted January 12, 2021 Share Posted January 12, 2021 I have the issue of Amplifi 150 shutting down every while, especially at higher volumes. I recently found out, that it is not shutting down after I plug it in a big power bank (luckily I had one to try). Seems that the power input is not working well and it has nothing to do with overheating. I hope this helps someone. Quote Link to comment Share on other sites More sharing options...
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