Sony STR-V3

Thread Starter

mysapphos0116

Joined Mar 16, 2023
4
I Have A Sony STR-V3 That Blows The F1 125v Fuse Everytime I Turn It On.. Now I Have Read It Could Be A Blown Output Transistor, I Want To Make Sure These Are Labeled As Q713, Q714,Q764 And Q763 ? Also Can Someone Tell Me Hiw To Check The With My Digital Multimeter?
Thank You In Advance For All Of The Help It Would Be Greatly Appreciated.. I Will Attach A Photo Of What I Am Looking At..
 

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twohats

Joined Oct 28, 2015
447
Hi,
With the power off. You could check for short circuits on the transistor legs, there shouldn't be any.
Compare all the transistors, they should all be very similar.
If any are suspect, they require unsoldering then retesting.
If you search the internet, it will give you a good idea what you are looking for, when checking semiconductors.
Looks like 2SD780.
Good luck............
 

Thread Starter

mysapphos0116

Joined Mar 16, 2023
4
That's just flux residue! And please, don't capitalize every word, it makes sentences difficult to read!
So I Seem To Read Somewhere Here To Be Nice !!!!! If I Choose To Capitalize Every Word It’s Definitely Not Your Choice It’s Mine And I Don’t Remember Reading Anything In The Rules About How I Should Type
A Certain Way…
And You Really Don’t Have To Read My Post If It’s That Difficult….
Thank You For You Help Though !!!
 
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