15 Dec
2011
15 Dec
'11
4:52 p.m.
On 15/12/11 5:09 PM, Tony Duell wrote:
Although they do expect me to repair the signal-prpocessing PCB...
Which has a much longer expected lifespan, something that is irrelevant,
because by the time it fails, the little cylindrical time bombs have
already gained the manufacturer another sale.
--T
Amazingly the service manual for our LCD TV
doesn't contain a schematic
of the PSU board (it's unclear why not, one page says for 'safety reasosn
the pSU must not be field-repaired',
That is because they want you to buy a whole new monitor when the crappy
Chinese electrolytics swell up and die.
In any case I regard the information in service manuals ot be jsut that
-- information. I don't follow it blindly. Of course I read the service
manual, but sometimes I don't do what it suggests. As here. If the PSU
failed, you cna be sure I'd have a go at fixing it (and lack of a
scheamtic doens't always make repari impossible...)
[In much the same way, while I reer to many modern service manauls as
'boardswapepr guides', I do read them if theyr'e available. I am not
going to start swapping boards, but I might was sell get all the
informatio nI can before I dive in with the 'scope.
I've "field repaired" at least five
units in this way, giving them a
Right...
-tony