[1993 COBRA]



I've gone through all of the menu funtions that I could find on the remote and on the front panel of the receiver. I did a Google search on this receiver only to find retailers or how to reset from protector mode. I've already done the "hold the power for 5 seconds" turned off gig to no avail. 5 seconds turned on puts me in the demonstration mode. I've unplugged the receiver and still can't get sound to the speakers. I'd love to smash this thing with a sledge hammer, but it isn't mine and just want to get the thing to work. It belongs to a relative that isn't tech savy and cannot find the user manual.

 

[Slaine]

Is the speaker selection switch set to the correct setting?

 

[1993 COBRA]

There's no way (that I can tell) to select speakers. There's only the one speaker button below the power button. When I hit the speaker button the message "Not In Use" appears on the display. BTW, that pic I put up I just noticed is slightly different from the actual receiver. The one pictured has a knob under the power button which is not the way the actual receiver looks.

 

[khellandros66]

Were you using a 1/8 ti 1/4in jack adaptor, if so make sure that isn't still in the headphone jack.

 

[1993 COBRA]

No adapters were being used. Nothing in the headphone jack.

 

[hobbs47]

Try a factory reset.Hold down SETUP,DIMMER,and POWER buttons at the same time.If that doesn't work you will probably need to take it in for service.

 

[1993 COBRA]



Quote:
Originally Posted by hobbs47 /forum/post/0


Try a factory reset.Hold down SETUP,DIMMER,and POWER buttons at the same time.If that doesn't work you will probably need to take it in for service.

Did that. SP.OFF still appears in the display. No sound. Found the manual. Did the hold SOUND FIELD & POWER to reset sound field. Still nothing. Got past the demostration mode to reset, but still no sound (never going to buy another f***ing Sony stereo component ever again at this point).


Going to do a last ditch effort to get this turd working by unhooking everything and hooking it all back up again. If this doesn't work I'm going to ask the local gun range manager to see if he'll let me set it up in the indoor range and blow it apart (yes, I'm serious).

 

[chunkisagoonie]

The manual (got it online from Sony) seems to indicate that there is small "SPEAKERS" button right above the headphone jack that toggles the speakers on and off.

 

[1993 COBRA]



Quote:
Originally Posted by chunkisagoonie /forum/post/0


The manual (got it online from Sony) seems to indicate that there is small "SPEAKERS" button right above the headphone jack that toggles the speakers on and off.

Yes, that's the button I've been pressing. I took the housing cover off to look inside to see if anything was fried. Nothing that I could see or smell. I had unhooked the DVD player that was hooked up to it using the optical audio cable. I was going to remove the connector to the circuit board for the headphone jack and as I pulled up on it just slightly I heard the receiver click. The SP. OFF was gone.

I turned up the volume and heard the static from the speakers. I figured "great," but I hooked the DVD player back up while the housing was still off and when the receiver detected a surround sound mode it switched back to SP. OFF. I tried repeating what I did to get the SP. OFF to go away and this time to no avail. I think it's time to destroy this piece of crap and go for a complete surround system in a box (trying to convince family member to get a JVC TH-C60 system while we still have them where I work).

 

[hobbs47]

if you've gone that far,take the HP jack pcb all the way out and resolder the connections on the bottom of the pcb.you should see obvious cold solder connections.

 

[J_Palmer_Cass]



Quote:
Originally Posted by hobbs47 /forum/post/0


if you've gone that far,take the HP jack pcb all the way out and resolder the connections on the bottom of the pcb.you should see obvious cold solder connections.

With his attitude, he will probably use a propane torch to solder the PC board and blame Sony for that too!

 

[1993 COBRA]

I tried pulling that connector off. It wouldn't come off. I'm done messing with it.

Quote:
With his attitude, he will probably use a propane torch to solder the PC board and blame Sony for that too!

I expressed frustration over this issue. I'm sure you've had frustrations with electronics from time to time, too. I'd say "attitude" is a poor choice of words. It's more like an outlook at this point. I look forward to buying something much better in comparison what this receiver could ever do. In all reality I think this receiver has lived it life and it's time for it to go. Also, I'm sure there are people that would, but I wouldn't stoop so low to try mending something only to put more blame on the manufacturer. I'll try to overlook that hint of a superiority complex.

 

[chunkisagoonie]

It's a Sony (TM)


This is probably not a horribly expensive fix. Could just be a bad headphone jack PCB.

 

[1993 COBRA]

True, but remember, it switched when the DVD player began playing. When the receiver detected the surround mode from the disc (after hitting play from the disc's menu) is when it switched.

 

[Lennie40]

Cobra on your second photo there are four wires. The dark gray one should be grounded with a screw. Check it by touching it to the side and see if your speakers come back.

 

[drdarrow]

SOLUTION

Here it is 9 years later, and I had the same problem with a Sony STR-DE675 that I picked up at the curb before the trash folks got it.

This thread gave me a clue. I figured everything dust with conductivity had settled in the always-open headphone jack. Something was triggering the system's headphones detection switching mechanism.

So I got a Q-tip/cotton swab and soaked it Ina household cleaner and aggressively swabbed out the interior of the jack, as deeply as I could reach.

I also started up the Sony in Factory Reset mode (set-up, dimmer, and power button all at the same time, and held for 5 seconds). This switches to DVD/LD and also takes the volume to MIN.

Now the system works normally and I can use it for surround/theater with my AppleTV and an optical cable for digital sound in. I have been playing Pandora Muisic and Internet radio via AIRPLAY ever since. Thanks, guys, for all your contributions.