On Mon, 15 Nov 2010 17:37:11 -0500, "Charles"
wrote:



"Jeff Liebermann" wrote in message
.. .

http://www.ifixit.com/Manifesto

Sorry, but the year is 2010 and repair of recent and future electronic
products is not going to happen, as least as what can be accomplished by Joe
consumer. For the factory authorized geek squad, sure they PERHAPS have
access to data and modules and software and they can, in some cases, repair
electronic items.

I'd love for it be so, by the way. I detest sending stuff to landfills and
to recycling centers. But the truth is that there is not much inside a
modern electronic gadget that is repairable. SMT has rendered component
replacement impossible, for many cases. Schematics are no longer
obtainable. Embedded software makes troubleshooting almost impossible.
Repair parts are not available. And the list goes on.

Richard Feynman (a Nobel winner) often talked about taking radios apart. If
he would try that now, he would move on to biology.



Wrong on so many counts that it is laughable. SMT devices require new
techniques. ONE example of many similar events. About a year ago I
obtained a 'dead' 50" plasma TV. Plug it in, it tries to turn on,
then the red light on the front panel starts flashing 2 short, 1 long.
Download the service manual (free from Elektrotanya.com), it's
flashing error 12; problem with the 12V supply. Read the service
manual. 12V error may be due to a problem with the audio amp or with
the DC-DC converter. Disconnect the audio amp, no change. Read more
of the service manual. Overloading the 12V supply by the DC-DC
converter may be due to shorted mosfets. In that case, replace both
the mosfets and the controller, all are SMD parts. (The DC-DC-
converter is part of the Small Signal Board, available online for
under $100).

Order the parts from Digikey, for a total cost of less than $10,
including shipping. Use Chipquick and a soldering iron to remove the
old parts, solder braid to remove the old solder and Chipquick,
install the new parts. Reassemble the TV, cross my fingers, plug it
in. It turns on and works perfectly. Just for luck I verify all
power supply voltages and update it to the latest firmware.

The biggest problem was moving the 100 lb + monster around.

I've said this repeatedly, new technology requires new techniques.
The people who claim it's unrepairable either have a vested interest
in selling a new one or are incompetent.

PlainBill