My left speaker to my Sony HCD-GX450 stereo is

My Sony - Model : HCD-GX 470 . When i turn the power on it is on . Just 30 seconds it turns off itself . I do not know what is going on ? Please show me OR help me to fix it .

Hello. I downloaded the manual for the Sony system with the model number MHC-VX55. It seems that the part you are asking about is not a speaker system, but a preamplifie/power amplifier with integrated inputs from CD/Video, tape and tuner. The speakers that connect to the HCD-VX55 are a three way passive design with a nominal impedance of 6 ohms and model number SS-VX55. To answer your question I will assume that you meant you would like to connect the MHC-VX55 system to your computer for playing back audio tracks from your computer. Yes, you can do this. Your Sony system is equipped with an input labelled MD/Video (audio) With a sensitivity of 450 mV, this will (not ideally) the output from your computer headphone jack (if a laptop) or, even better you may have a desktop with an audio output at line level. You will need a simple audio connector with a 3.5 mm stereo plug on each end (very common and readily available for a few dollars. Be careful when setting up that you have your source turned down low and the input on your Sony machine about half way. You will find the sweet settings so that you get good sound without distortion. If you get distortion your source level is too high. Hope this helps. Cheers, Don.

Hi the reson is your stereo needs to be on groove mode to get max power out of your system

Check the speaker wires on the back for shorts, if okay! the problem is in the audio output ic's in the stereo.

The problem is in the audio output ic, or bad solder contacts, check to make sure there are no bare speaker wires showing, and if by chance you added additional speakers, then that is the problem and should be removed.

Did you get a manual with it? According to the Sony site this speaker originates in Sony MHC-GX450.

"This product bundle includes the following models:
HCD-GX450 - STEREO MINI SYSTEM
RM-SC3 - REMOTE CONTROL for Shelf Mini Systems
SSRG444 - FRONT SPEAKER FOR MHCGX450
SS-WG450 - SUBWOOFER FOR MHCGX450"


Find the manual here and learn a bit about your seprated sub...

http://esupport.sony.com/US/perl/model-documents.pl?mdl=MHCGX450

See page 7.

As can be seen, the subwoofer has two connections to the mothership, very unlike the standard speaker level (+/-) speaker wire or RCA-Line-Level subwoofer out that 'normal passive or active subwoofers use, respectively.

Not knowing which of those your unspecified Pioneer receiver supports, it is impossible to say. Does your Pioneer have that control jack?

Mini-systems are generally not designed to be pieced out and used with grown-up gear. The absence of standardized connections is the clue.

Electronics have gone to heaven. Bury it and get a new one.

on the front of the system

your speaker are hooked up wrong.or there may be dust in or on the terminals.i used a q-tip with rubbing alcohol and wiped them down.hook up the speaker cords properly and try this again.if this does not work then unplug the stereo and let it sit overnight and try again.