Question about Kenwood Audio Players & Recorders
Have a Kenwood KRX 891 stereo cassette receiver (manufactured as tuner, cassette, amplifier connected together) Has not been abused. There is a fairly loud hum in it---no matter which unit you are using, even the separate CD player. We have tried different speakers, different cords, turning up the volume, disconnecting the external antenna and nothing works. Pretty dry here so don't think it can be humidity. Any ideas??
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Posted on Jan 02, 2017
You have one of 3 problems:1) bad solder joints in the amplifier or preamp section 2)defective output transistors/ICs in the power amp or 3)missing or incorrect voltages to the amp section. If the unit has a headphone jack plug in a headset. If you have sound then everything is OK thru the preamp section and your problem is in the power amp. Any competent repair shop should be able to solve this one easily.
Posted on Jun 23, 2006
It sounds like you have eliminated all the things that could generate this symptom that are external to the amp. It is most likely that there is an internal problem that is causing the amp to go to protection mode. A power supply failure(maybe a fuse) is the only really user serviceable part inside the amp. Perhaps check for failed fuses, replacing any that may have blown with exactly the same type. BE SURE TO UNPLUG AT THE WALL FIRST:)
Is the amp still under warranty? If so, then returning it to a Kenwood service center is the shot. If you want to have a go at repairing it, I can talk you through it, but some experience with this sort of thing is very necessary. Good luck
Posted on Apr 06, 2008
i have the same unit and a similar problem, after a fall of the tuner on the floor while i was cleaning my room, first times the st-x302l was powering fine but after some minuts it quit alone.. now (i dont know why) it remains on but if there is an interruption of electricity it dont turn on anymore, it turn on only by removing the metal chassis and moving random the electronics.. i think it has some electronic contact or circuit break.. i brought it to a specialist in electronics and he told me the reparation would be too expensive so i prefer to try fix it by myself.
Posted on Apr 10, 2008
SOURCE: Loud humming noise from new hdtv
hello, the speakers are fualty or have a shorted connection if they came with the tv contac your seller and arrange for a replacement imediately dont wait. since they are giving you feedback dont use them they may cuase other fualts in your tv, any component thats cuases hum or noise when pluged into the tv should not be used at all.
one important thing is to have a grounded plug this also may cuase fualts down the line,
if posible get a power line conditioner or ups (uniteruptable power supply)
flat panels are very over protective you dont want the tv to start blinking. since flat panels have built in protection circuts any slight short or fualt may cuase the wide screen to go into circut shutdown mode and this will cost you more if the speakers create a short in your audio circut it may damage your widescreen internal boards and cuase a system shutdown circut (red light flashing no picture)
contac your sellers site let them know your speaker are cuasing a loud hum
and that you will need the speakers replaced these are definitely fualty
if you dont have any coverage or you got the set as is then dont take any chances use other speakers.
if you are electronically inclined you can open these up and find out whats wrong with them internaly it may be a loose connection, since opening up the equipment may void your warantee contac the store first see what they say..
good luck happy holidays
Posted on Dec 11, 2008
make sure you have the speaker connection right if you do then it is a ground problem try plugging it in a different outlet
Posted on Dec 16, 2008
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