[TechAssist] Re: Sony STR-D315 one side blown, need schematic
- From: "Technotronic Dimensions" <techforce@xxxxxxxxxxx>
- To: <techassist@xxxxxxxxxxxxx>
- Date: Thu, 23 Jan 2003 18:29:42 -0500
I did a STRDE415 not too long ago - had bad Q654 (Mp1620) & Q753 (Mn2488)
transistors blown on one side. Replaced them - never came back again.
If it uses those transistors, I can probably get them for you. I'd replace
the whole gang.
Steve
Technotronic Dimensions, NY (USA)
www.Technotronic-Dimensions.com
1-877-817-9885
1-877-817-9885 (FAX)
----- Original Message -----
From: "Kevin" <kevintv@xxxxxxx>
To: "TECH-ASSIST" <techassist@xxxxxxxxxxxxx>
Sent: Thursday, January 23, 2003 6:21 PM
Subject: [TechAssist] Sony STR-D315 one side blown, need schematic
> Hi fellow techs,
>
> Both output transistors, Q712, Q713 are shorted on one side-and Q755,
> Q757 are shorted on the other side. Must be a ying/yang thing. Does
> anyone have the schematic for this Sony STR-D315? I don't repair a lot
> of stereos so this one seems different to me.
>
> I might have shorted Q755 and Q757 when I was measuring the voltages at
> the outputs with the outputs disconnected. As I was measuring the
> voltages Q705 fell out of circuit because it was so hot the solder
> melted. This transistor however still tests good. That is when I
> checked the other 3 similar transistors and found Q755 and Q757 shorted.
> I think I tested these before and they tested good. I tested these
> before because the solder connections looked like they had endured a lot
> of heat.
>
> Kevin Wilks
> Kevin's TV & Video Repair
> Penticton BC Canada
> kevintv@xxxxxxx
>
>
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