Matsui 28WN20.

[Ian Field]

Google is being very evasive on this one!

28WN20.

Pretty sure the degauss thermistor has shattered and I'd rather not have to
hand trace to figure out whether its a PTC/PTC or PTC/NTC type.

Thanks for any help.

[peterw...@gmail.com]

https://english.electronica-pt.com/electronica-search?find=MATSUI


Maybe here?

Peter Wieck
Melrose Park, PA

[Ian Field]

"pf...@aol.com" <peterw...@gmail.com> wrote in message
news:d17994ab-9437-413a...@googlegroups.com...

Many thanks - also found info on the Hitachi that phutted yesterday.

[tabb...@gmail.com]

usually degaussing doesn't need to be fixed unless you move the tv. The dual element thermistor can most likely be replaced by a standard one from almost any other colour tv.


NT

[Ian Field]

<tabb...@gmail.com> wrote in message
news:65d84256-1d8c-4199...@googlegroups.com...

Incorrect: there are 2 types - the usual one is dual PTC, the "spare" PTC is
directly across the mains to heat the active one and cut it off. the very
early single PTC had a load resistor and fed to the coils via a 68V VDR.
Some are PTC/NTC - the NTC is heated by the current draw of the TV/monitor
which also provides inrush surge limiting.

My TV has a single PTC and a time delay relay - fairly common on PC
monitors. Some had a front panel degauss button so you could do it manually
as well as at power up.

The most common failure mode is the thermistor pellet sometimes shatters -
my TV also has some electronics that could fail.

[tabb...@gmail.com]

On Wednesday, 15 August 2018 18:21:05 UTC+1, Ian Field wrote:
> <tabbypurr> wrote in message

So plenty to choose from. Motor & magnet is another option.


NT

[Ian Field]

<tabb...@gmail.com> wrote in message
news:f5ca4a4a-c775-4523...@googlegroups.com...

Choose away - fitting a PTC/NTC where a PTC/PTC should be; usually blows
away a few copper tracks.