Matsui 28WN20.
 

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.

Matsui 28WN20.
 

On Tuesday, August 14, 2018 at 2:27:27 PM UTC-4, Ian Field wrote:
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.

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


Maybe here?

Peter Wieck
Melrose Park, PA

Matsui 28WN20.
 

" wrote in message
...
On Tuesday, August 14, 2018 at 2:27:27 PM UTC-4, Ian Field wrote:
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.

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


Maybe here?

Peter Wieck
Melrose Park, PA

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

Matsui 28WN20.
 

On Tuesday, 14 August 2018 19:27:27 UTC+1, Ian Field wrote:
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.

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

Matsui 28WN20.
 

wrote in message
...
On Tuesday, 14 August 2018 19:27:27 UTC+1, Ian Field wrote:
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.

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.

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.

Matsui 28WN20.
 

On Wednesday, 15 August 2018 18:21:05 UTC+1, Ian Field wrote:
tabbypurr wrote in message
...
On Tuesday, 14 August 2018 19:27:27 UTC+1, Ian Field wrote:
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.

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.

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.

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


NT

Matsui 28WN20.
 

wrote in message
...
On Wednesday, 15 August 2018 18:21:05 UTC+1, Ian Field wrote:
tabbypurr wrote in message
...
On Tuesday, 14 August 2018 19:27:27 UTC+1, Ian Field wrote:
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.

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.

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.

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

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