Hi;

I got a bunch of these "tower" stereos in for repair from a dealer
and they seem to all have the same problem. No audio, which
appears to be blown STK 412-420 ic chips.

I haven't contacted JVC yet but I'm not seeing them listed in
any of the distributers catalogs.

I have the feeling that these chips are going to be pricey.
Has anyone run into these before ?
Am I waisting my time ?

Thanks,
Rick

In the UK thery're not that dear but as you say they are only available from
JVC
usually just the chip is blown and little else
AW

"TA7205" wrote in message
...
Hi;

I got a bunch of these "tower" stereos in for repair from a dealer
and they seem to all have the same problem. No audio, which
appears to be blown STK 412-420 ic chips.

I haven't contacted JVC yet but I'm not seeing them listed in
any of the distributers catalogs.

I have the feeling that these chips are going to be pricey.
Has anyone run into these before ?
Am I waisting my time ?

Thanks,
Rick

"TA7205" wrote in message
...
Hi;

I got a bunch of these "tower" stereos in for repair from a dealer
and they seem to all have the same problem. No audio, which
appears to be blown STK 412-420 ic chips.

I haven't contacted JVC yet but I'm not seeing them listed in
any of the distributers catalogs.

I have the feeling that these chips are going to be pricey.
Has anyone run into these before ?
Am I waisting my time ?

Thanks,
Rick

Hi Rick,

Before you go replacing STK412-420 I suggest you get the dealer to give you
all the speaker boxes. You should check the speaker mounted in the side of
each box. There's only about 12 screws to remove the speaker. Have a good
look at the speaker wires that run from the tag strip mounted on the speaker
frame to the speaker cone. If they look like there touching or have been
arching (bare wires have turned black) then this is the cause of the STK's
destruction.

As JVC Dude say's IC's only appear to be available from JVC

Hope this helps,
James

...Thanks for the info.

Next, I'll call JVC to see how much those IC's actually cost.

Rick

Hi folks;

I just got off the phone with the JVC dist.
They gave me a price of $62.33 on the sub-output and $88.32 for the main
output.

That's $150 before shipping.
Hhhmmm. I think I just aquired some big book ends.

Rick

strange, here in the UK JVC want £26 inc vat for the 412-240.
presume it comes from the same far eastern source?
AW


"TA7205" wrote in message
...
Hi folks;

I just got off the phone with the JVC dist.
They gave me a price of $62.33 on the sub-output and $88.32 for the main
output.

That's $150 before shipping.
Hhhmmm. I think I just aquired some big book ends.

Rick