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Left channel of preamp does not work - Audio Players & Recorders

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If all connections are good, then a capacitor in the audio channel will need to be replaced. Look for any swelled capacitors or burn marks on board. You can use a capacitor tester or multimeter/ohmmeter to determine faulty capacitor

Posted on Aug 02, 2009

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SOURCE: Pop in left channel

Check your cabling,sounds like earth break

Posted on Jan 19, 2009

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1 Answer

B&K AVP2000 left channel not working


Yes amps buzz when something gets near them - say a pen or probe and if you know what it is safe to touch a finger! Fortunatly for you the left channel is the same as the right. So if you believe it's the pre-amp work backwards from the where the power amp connects to the pre-amp, going through the pre-amp stage by stage - prodding the parts. Remember a buzz in the right a buzz in the left! No buzz in the left but one in the right fault found!
Ignore the power supply it's nothing to do with that as it's common to both channels.

Dec 30, 2012 | Audio Players & Recorders

1 Answer

Aragon 3002


Chec whether balance control is adusted properly. Check the speaker connected to left channel. Check the power amplifier circuit of the left channel [a skilled work indeed]

Apr 16, 2012 | Aragon 3002 2-Channel Amplifier

1 Answer

The sound of the ''shure m44-7'' only sends a signal to the left side of my headphones and master. the cables are wired in the good colour and seem to be steady, what else could it be?


If you are only getting sound from one channel try reversing the left and right channel cables from the turntable to the Preamp/Amplifier. If the sound switches channels in your headphones then the cartridge or the cables from the cartridge to the preamp in the turntable have a problem. If the same channel has sound, did not change channels, then you have a problem with the preamp or headphones. If the headphones work with another input, radio, cd, etc, then the headphones are good and the problem is in the preamp unit.

Jun 17, 2010 | Shure M44-7 Turntable

1 Answer

Yamaha m70 amp and c70 pre-amp right speaker stopped working


First, lets's determine if it's the amp or the preamp...

Swap the Left and Right channel cables between preamp and the amp with each other.

Did it stay on the right? = amp problem.

Now on the left? Preamp or source.

Plug any Line Level device (CD?) directly into the amp inputs. Work now? Preamp problem.

ALL sources? Preamp - toggle all controls, especially a Tape Monitor to possibly wipe of any built-up oxides in them.

May 31, 2010 | Audio Players & Recorders

1 Answer

Technics 1310 turntable has left channel (white


There are just two causes, one is the preamp, which can be easily checked by putting the right channel jack in the left terminal. If the sound is normal, then it's likely that the cartridge in the deck is bad, or some wire is loose. However if the sound is still poor then the magnetic cartridge preamp in the amp has a fault. These are normally a single IC, which will have failed. Find the preamp by tracing the wires from the imput socket to the PC board, which may be alone.

Mar 21, 2010 | Audio Players & Recorders

1 Answer

AUDIO AMPLIFIER'S ONE CHANNEL DEAD


Hi there.
Check for shorted speaker wires on left channel. If not, disconnect speaker wires and check to see if headphone jack works. If left works, you may have a blown speaker. If left still doesn't work, left power amp blown.
Thanks
Paul

Jul 06, 2009 | Sony Audio Players & Recorders

1 Answer

Left channel volume is very faint as compared to the right channe


It sounds like the preamp section is working but the power amp is not. Look at the power supply section and see if it is getting power to the power amp and if ok check the power transistors or IC.

Feb 13, 2009 | Yamaha Audio Players & Recorders

1 Answer

How do I connect a Polkaudio powered subwoofer (psw 125)


Connect a set of stereo RCA cables from the 'Output 2' on the Hafler to the line imputs on the Sub.Turn on the '1+2' output switch on the Hafler and rock out!

Dec 16, 2008 | Marantz PM7200 2-Channel Amplifier

1 Answer

No sound comes out of the left pre outs


It sounds like the preamp wire that carries the left channel signal between the HU and the 2ch amp has an issue. Here's two quick things to check.
  1. Check that both ends of the left preamp cable between the deck and 2ch amp is not loose or disconnected.
  2. Swap the left and right preamp connections at the amp. If the issue stays with the left channel, the issue is with the amp. If the issue moves to the right channel, the issue is with the preamp cable or the HU's preamp output.
Let me know what you find out!

Mar 13, 2008 | JVC KW-AVX800 CD Player

2 Answers

Pop in left channel


Hi i don´t speak a good Englis but i think what you have a problem whit a filter in the preamplifier, just in the final amplification block, open it end check for any spill o exploded filter

Dec 03, 2006 | NAD T163 Amplifier

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