Repairing QSC 12.2 Active Loudspeaker for Power supply problem in SMPS Board....Most uncommon Fault.

Repairing QSC 12.2 Active Loudspeaker for Power supply problem in SMPS Board, found the issue very rarely this type of fault is happening.
Very very tricky & tips of volt test.
Most uncommon Fault....
#qsc12.2activespeakerpowerproblemsolved
#repairingqsc12.2activespeaker
#qsc12.2activespeakerrepairedpowerproblem

[@abdyjeff]

I have QSC KW 181. The power is there, but there's no signal... That makes it not to produce the output to the speakers. what could be the problem

[@toddwhite7144]

HI, any solutions on why QSC k12.2 powers off. Reboot and it works. I sent off in 2020 to be fixed. it took over a year. Now back the issue has happened 4 times.

[@izzzzzz6]

I'm about to open one of these. No idea what's wrong with it. He has it at 2,600M on a mountain and he thinks it got water inside. It's still under warranty but the same thing already happened to the other one and he doesn't want to send this one to Thomann because the last one took one month to repair and he thinks they said it was just an internal fuse. He said it lights up though. Let me see. Right. So, it powers up and everything looks normal on the power led and the screen but after 3 seconds it shuts itself down and immediately starts up again for 3 seconds and so on.

[@djxoy6]

where can I buy ic parts online for this speaker

[@sksoundnikhilpatel5232]

Hello sir.... K12,2 same problem.. pliz sand contact number. Or Address..

[@mgarcia12]

my qsc k12.2 power supply light keeps on and off... any initial assessment on the problem?

[@prakashrabha5473]

Sir nx audio active speaker mosfet burn. I changed mosfet 20 n50 n ir2153 ic but power supply not work

[@DDEVAOfficial]

Hi where you from ?

[@samuellarbie1014]

Boss thank you your video help me a lot

[@sekaraudiojolarpet7232]

Ur rocking

[@ejazshahelectronicsrapring1704]

🌹

[@izzzzzz6]

With power flashing screen on and off I think it is: D51 (an smd SL110 and possible Q23 a small 6 pin device near D51) Looks like the frequency driver for Q13 and Q14 I'm getting 23 ohms both directions across D51 and 0.040 in diode mode on my meter.

[@jesuscolunga2281]

Saludos! Por favor información sobre JBL PRX800.

[@izzzzzz6]

Update. I found some information. D51 is supposed to be a RB751S40T1 Schottky.

[@harishchandrasingh8074]

Sir QSC K 12.2 ka RMS watt at 4 Ohm & 8 Ohm kitna ata hai... Please reply 🙏🙏🙏

[@abhinanhamangli3266]

Sir muje ye modul cahiye kaha se milega

[@suryakantabarik1856]

Address