This amp/mixer has a loud hum at turn on. I can't find any diodes shorted in PS. Any other ideas?
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Re: Peavey 600E amp/mixer
Good clear hi-res pictures will be a good start.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 -
Re: Peavey 600E amp/mixer
check the output devices for short . also check ripple on main filter capsComment
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Re: Peavey 600E amp/mixer
Replace the Main Filter Capacitors. They may be 330uF 450V or thereabouts.Comment
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Re: Peavey 600E amp/mixer
Is this it?
You can also check the regulators on the power supply, I had a hum come fron blown regulators before and you they don't always go dark when they doComment
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Dear members,
I have a linear variable power supply with unknown brand name that I used for voltage injection.
Then it failed. I discovered that its transistors (Q1 and Q2) are shorted.
In addition, I discovered that its zener diodes are defective.
I can replace the burned transistors.
But I do not know the model of the zener diodes. the model number is not marked on the zener diodes.
Therefore, I cannot replace the zener diodes.
I do not want to test the zener diodes in a test circuit to discover their model or value.
no schematics are available... -
Hi all....I have been using my Behringer mixer quite comfortably for a number of years now and generally it's been trouble free apart from a replacement crossfader. Recently input three channel fader began to bleed a little and causing the mixer to light up like a Christmas tree! I realise the unit is ageing now and although I'd put some hours on it over the years it's not been abused. Following the issue I planned on replacing the faders and ordered the necessary parts. In the meantime whilst awaiting the replacements I continued to use the mixer up until the channel fader started to give feedback...
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Hello dear audio friends.
I am feverishly looking for the full electronic schematic (not a block diagram) of the RCF type M18 digital audio mixer.
The device does not make a WIFI connection with my Apple tablet and yet I have already installed the recent app on it.
I suspect that there is a problem in the mixer itself with the WIFI card and of course I would like to see this on an extensive schedule before opening the device.
Thanks in advance if anyone can help me with this schematic.
Of course, all information about this digital mixer and possibly references...07-24-2023, 06:40 AM -
Hello,
I've got a really strange issue with the speakers on my Philips 43PUS7506/12. It makes this awful loud buzzing now. It happened after it was attempted to be wall mounted - I think the back got squeezed and something broke.
I thought maybe the speakers got damaged, so I replaced them - no dice.- Using the internal speakers, it always happens.
- Using the headphone jack, it never happens.
- Using the digital/optical out with a soundbar - it happens after about 2h/movie runtime - it's never as drastic, it just pops in and out, but I didn't want it to damage the sound bar
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I am planning to buy myself a new mixer. Yamaha MG12U or XU(not sure) and I always like to take a look inside of mixer to check how it looks, if caps are low quality and other stuff.
I manage to find some teardown video on youtube but video name is saying MG12XU, but when you look at video on mixer it's MG12U.
And when I google those two models they have different PSUs one have cheap low quality caps, and other is way better with quality ones Nichicon. So I am confused now from what model exactly is that better PSU??
I google a little and found that there is this part number...
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