SoundStream 404

SS64 · 10th October 2008, 11:38 PM

I'm repairing this 404 for the hell of it. Its been laying around for awhile now. Here's what is does. As soon as you power it up it pops the fuses and if you bypass the fuses the PS trans. get hot. So I will be replacing the PS fets from 50no6's to 80no6's. I have some 2n6491 and 2n6488's Can I swap those with the tip 107 and 102's?

There are no visible burnt parts or anything so I'm pulling all the outputs tonight and im going to try to get the ps to power up.

Perry Babin · 11th October 2008, 12:28 AM

Pull the rectifiers instead of the outputs. There are only 4 of them so they'll be easier/quicker to remove.

The 6488s and 91s are not a suitable substitute.

SS64 · 11th October 2008, 12:51 AM

ok its confirmed the ps fets are bad. I will go get some more tomorrow. I will post my results tomorrow.
Thanks for your help Perry

10th October 2008, 11:38 PM	#1
SS64 diyAudio Member Join Date: Mar 2008	SoundStream 404 I'm repairing this 404 for the hell of it. Its been laying around for awhile now. Here's what is does. As soon as you power it up it pops the fuses and if you bypass the fuses the PS trans. get hot. So I will be replacing the PS fets from 50no6's to 80no6's. I have some 2n6491 and 2n6488's Can I swap those with the tip 107 and 102's? There are no visible burnt parts or anything so I'm pulling all the outputs tonight and im going to try to get the ps to power up. __________________ It isn't fun unless it can kill you!

11th October 2008, 12:28 AM	#2
Perry Babin diyAudio Member Join Date: Nov 2003 Location: Louisiana	Pull the rectifiers instead of the outputs. There are only 4 of them so they'll be easier/quicker to remove. The 6488s and 91s are not a suitable substitute. __________________ Links >> Basic Car Audio Amp Repair --- Basic Car Audio Electronics --- Basic Transistor Testing --- Basic Switching Power Supply Design --- Basic Computer Skills << Links

11th October 2008, 12:51 AM	#3
SS64 diyAudio Member Join Date: Mar 2008	ok its confirmed the ps fets are bad. I will go get some more tomorrow. I will post my results tomorrow. Thanks for your help Perry __________________ It isn't fun unless it can kill you!

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