Yamaha CA -800 Amplifier blows fuse

[awknod]

Is this a shorted diode problem, anyone know?

 

[john]

Well the first thing you have to do is remove the cover then
get out your Multimeter and start looking for the short that
has blown that fuse it could be a Diode bad Cap ,Transformer,Outputs etc etc
Nobody is going to tell you what has blown the Fuse without first looking.


kip

 

[b]

Is this a shorted diode problem, anyone know?

what fuse? mains? output protection?

You can't in all seriousness expect anyone here to give you useful
tips with an original post of half a line of pure speculation!

B.

 

[Sofie]

where do you people come from??? is this a test?

 

[Asimov]

"Sofie" bravely wrote to "All" (23 Nov 04 16:15:40)
--- on the heady topic of "Re: Yamaha CA -800 Amplifier blows fuse"

Ya, it's a Better Business Bureau flying squad raid on S.E.R.!

So> From: "Sofie" <[email protected]>

So> where do you people come from??? is this a test?
So> --------------------------

Is this a shorted diode problem, anyone know?

.... Dunno if we'll get that past the CSA und UL 'owever.

 

[Mark D. Zacharias]

"Sofie" bravely wrote to "All" (23 Nov 04 16:15:40)
--- on the heady topic of "Re: Yamaha CA -800 Amplifier blows fuse"

Ya, it's a Better Business Bureau flying squad raid on S.E.R.!

So> From: "Sofie" <[email protected]>

So> where do you people come from??? is this a test?
So> --------------------------

Time for the standard referral to repairfaq.org

http://repairfaq.ece.drexel.edu/

The OP should try to get a clue about the types of things that can cause
this, and whether he's willing to invest the time and resources to fix it
himself, or just pay a professional.

A quick note - although there are a variety of potential causes, the most
likely is a "blown channel". Bad output transistors and quite possibly other
small parts damaged. Not very likely a DIY type with no prior experience can
fix it himself.

Mark Z.

 

[Don]

Is this a shorted diode problem, anyone know?

Hard to say with so little information to go on! :>

You should also check the electrolytics. In an amp of
this "vintage", it's not uncommon to find that they ALL
need to be replaced.

--don