Thread: blown amp?
View Single Post
  #20   Report Post  
Posted to rec.audio.car
John Durbin John Durbin is offline
external usenet poster
 
Posts: 59
Default blown amp?

Huh? I just repaired a top of the line 300W Sony ES home power amp with
a STK class A driver IC that cost all of $5.98 on Ebay. You telling me
the ouput IC in a $179 Pioneer HU is going to cost 10X what this bigger
driver IC in an expensive home amp sells for? Give me a part number!

JD

Barry & Nikki wrote:

I have not come in contact with any "cheap" internal amplifier chips.
Especially if you go through a parts supplier. I use to repair stuff on a
regular basis and now and again to this day. The IC's that Pioneer stereos
use are always pricey at $50 or more. I've come across a few "close out"
deals on some older chips but most of the mosfets used in today's stuff seem
to be considered gold when it comes to prices that are charged for them. Add
in a repair shops inflated labor costs and you might as well just purchase a
new unit.

With that said if you need one I have a few 100 "older" head-units available
or if you want to attempt the repair yourself I may be able to scrounge
up an IC for ya if you let me know the labeling on it. I don't want to go
dig up my service manual that is in storage to find the info. As for doing
it yourself a lot of today's stereos have 3-layers of circuit board traces
and most of the time you damage the inner layer when removing the IC if you
don't have the proper tools or a LOT of luck.



"Christopher Ott" chrisott at ottelectronics dot com wrote in message
...

I've never been inside that HU, but if you can post the markings on the


IC,

I might be able to point you in the right direction for a replacement. A
digital photo would be helpful too. No guarantee's, but the amplifier IC


is

usually pretty cheap and from what you describe, is likely to be the only
thing damaged.

Chris


"Steve" wrote in message
.. .


I have a JVC KD-S890. I take it that the component presed right up


against

the heat sink is the amp. I'm guessing that the scorch marks around it on
the PCB means the amp is fried. Is this the case?
The unitturns on and plays a CD fine, but no sound comes out no matter


what

I try.






** Posted from http://www.teranews.com **