Cracked solder joint on the common mode filter choke pin. I also upgraded the caps to PANASONIC FM series and re-soldered a bunch of solder joints.
Attached Files
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Never stop learning
Basic LCD TV and Monitor troubleshooting guides.
http://www.badcaps.net/forum/showthr...956#post305956
Voltage Regulator (LDO) testing:
http://www.badcaps.net/forum/showthr...999#post300999
Inverter testing using old CFL:
http://www.badcaps.net/forum/showthr...er+testing+cfl
Tear down pictures : Hit the ">" Show Albums and stories" on the left side
http://s807.photobucket.com/user/budm/library/
TV Factory reset codes listing:
http://www.badcaps.net/forum/showthread.php?t=24809
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Hello,
I have a DJ mixer here, an Xone:92 by Allen & Heath.
When I turned it on, only magic smoke came out, so I turned it off again.
An optical troubleshooting has brought me quite fast to the
source of the smoke: two resistors look disproportionately black (see first pic)
Those are R73 and R74 on the master PCB. See second pic for the corresponding page of the service manual.
Behind those resistors are five OP-Amps (U3, U4, U5, U6 and U9).
My thought is that one (or more) of those is defective. I've measured... -
Hi all,
Wondering if anyone here can help – I have an Allen and Heath Xone:92 silver mixer with one faulty channel – channel 2 is only outputting on one side (right side) when set to a phono input. It works fine with a line input, and all the other channels work perfectly with phono and line inputs. I'm not sure when this happened as I rarely use the faulty channel – it could well have been like this for years! Any thoughts on what might be causing the fault and how it could be repaired? I can do some basic soldering, so I'm hoping I might be able to fix it myself.
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Hello everyone.
I'm having issues with my DJ mixer, and after taking it apart and checking everything out, it seems that I need to replace 2 rotary potentiometers for the filter, and that the PSU has some caps burned. Hopefully these 2 fixes will solve my issues.
The potentiometers I will just replace (hopefully the repairman I spoke with will indeed send me the spares, in case he doesn't, I'll update here if we can find a suitable replacement), but for the PSU caps I'd kindly ask you forum members, if anyone could help guide me in the right direction. I'm having difficulty... -
The sub developed a constant popping every couple seconds from woofer and power LED flickering with nothing but wall AC connected. Connecting an audio cable didn't change anything. It doesn't play but a second or two of audio in between the pops.
Opened it up and discovered the power supply is making a faint clicking or ticking sound.
I measured the amp's output to the woofer and it pulses up to 50mv DC to be driver. The pulses coincide with the power supply ticking/clicking.
I measured the power supply output going to the amp board and it too has this pulsing. Voltage cycles... -
Hello, I'm a beginner for micro soldering. Right now I have some difficult to solder a qfn 20, I guess I put too much solder on the thermal-ground pad, the result is a corner of chip wich don't touch the board (last try).
I use a wire solder with hot air, I tin the board and chip before with iron and I use good flux.
I will have to solder a LVDS connector (40 pins, laptop pc), I saw a solder paste in seringe, good quality (it does not scatter).
See the test :
https://youtu.be/bNAzC-EvqHs?t=1767
With hot air from bellow the board, that's...