The unit (JVC HX-Z10) powers up fine and seems to operate normally but doesn't produce any sound. I have tried all the differen't functions cd player, tuner etc and all seem to operate normally but there is no sound output from the speakers. Have also tried plugging in headphones but no sound from them either. Any help appreciated
There is something that is called a relay in side of the set when u open it u will see it were u put the speaker wires behind that two black boxes those are the relay look between them n see if any thing had burn if so u need to change that part of reach me at 742-2520 if u want
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Re: System seems to operate fine but no sound
Sounds to me like you may have a channel blown. If one of the channels is blown you will have your dc protection relays activate so none of the channels will operate and audio may be muted explaining the headphones not operating. Definetly sounds like it needs to be serviced. Sub woofer poweramp prt # stk412-420 or left /right poweramp prt# stk432-070 most likely suspects with the sub amp being the most common of the two to fail. Could also be broken solder at poweramp ic's seen that also Just a couple possibilities firstname.lastname@example.org
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Well...as you said...the unit powers up...so you don't have a "dead set".I don't know if the speaker can be disconnected from the unit.As a rule of thumb...it is very rare that both channels (left and right )fail at the same time...it is usually one channel while the other speaker still operates.This is what I want you to do...In a quiet room..get really close to the unit...Switch it on and listen for any sound from the speakers...get really close...you should hear a slight hum from the woofers and a high frequency "hiss" from the tweeters....If no sound is heard..switch the unit off..You should hear a "plip" sound...If not...switch it on again...you should hear a slight "bump" sound from the woofers...If you hear no sound from the speakers at all..there is a problem with the output stages of the amplifier section.If you do hear sounds fron the speakers,,Turn up the volume and watch for an increase visually on the display (such as ascending numbers).If there is no indication of a volume increase...The "mute" may be stuck on..Try switching it off and on...please let me know what happens after you do all the tests....Looking to hear from you......PEACE!!! ok...
This is a semiconductor or capacitor thermal problem. You will have to be able to get to the circuit boards. With a can of Electronic Cold Spray (freon), you turn the unit on until it heats up and the sound goes out. Then, try spraying transistors and components once at a time, until the sounds comes back on. This will be the bad part. You will have to unsolder it and take it to Radio Shack or electronic parts store, or possibly order one online (google the part number, or value on the capacitor, etc.). Problems like these are usually transistors, and they usually only cost a few dollars (maybe $25 at the most). Inspect solder joints to see if they're cracked, or discolored (indicating a "cold-solder" joint, which you can resolder with fresh solder applied. The hardest part of fixing this type of problem, is that you have to sometimes take it all apart to get at the back of the circuit board to unsolder the bad part. Take pictures as you take it apart- they will help you putting it back together. Good luck!
if you have old speakers laying around the house try to see what happens, if you connected the good speaker and still has no sound then the internal amp maybe is bad. Make sure it is not muted also.LOL
I received a reply promptly from JVC to check power connections for shorts. O course I had already done that. So as a last resort, I pushed the power switch on and held it for maybe 10 seconds. It seems to have reset the unit, and it's playing fine. Best of luck, hope you all read this and it works for y'all. AJ