Yes but that is intentional, and works a bit like vaping cartridges, another chance to sell folk consumables.
No I used to work in a department called regional repairs, which got in all the pcbs from sets in the field all over the country that had been on
rental, and the board changer had simply swapped out the duff board.
Some were disgusting, with thick black muck half way up the valves if they were left in. Te pcbs were bent and warped and often carbonised around the valve holders, with burned out resistors just bridged with a new one or a capacitor cut off and one bridged under the pcb. Obviously the local
engineer ran out of good pcbs and bodged up duff ones quickly.
We ended up washing all the boards in a solvent and sometimes ultrasound baths, replacing known problem components that caused stock faults,
Araldite up the carbonised bit after cleaning out the charred stuff and then bridging wires over to the valve pins. The issue was that people did not
want a shiny new set, they liked their old one, and as none used aerials,
they were all cabled up, because often in places like low lying areas and
the welsh valleys had no signal, we were the one way to get TV..
The test rigs were in effect TV sets with the pcb in question brought out
into a test frame.
Brian
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"Smolley" <
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On Sat, 04 Mar 2023 09:41:11 +0000, Brian Gaff wrote:
I still find it a bit of an anticlimax that modern TVs are pretty dead
from the smell point of view. Having for most of my life had TVs with
valves and a CRT, one gets used to the hot singed paxolin and Ozone
smell as you turn them on for a while.
Older sets had that decidedly musty smell as all the accumulated dust
inside heated up.
Unfortunately, modern LCDs tend to run cool and very seldom smell of
anything at all.
Brian
I have seen a reference to smelly vision on tv
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