Philips tv dead

[Bart Bervoets]

Model nr is unreadable but someone told me it's a D110 chassis.
Old, must be about 12 years.
Set was dead but after replacing a few caps and lopt the green light comes
on but no picture, adjusting the lopt
won't make a difference, haven't checked if there's sound.
According to the owner who's my landlord the picture became gradually darker
and one morning it didn't came on
at all anymore.
I'm sure i tested all caps, there is HV as when i turn the set off a blob
can be seen on the screen.
HOT is fine, startup circuit should be good as well as the green light is
on.
Further suggestions?

Bart Bervoets

 

[James Thompson]

"Bart Bervoets" <nekobe@online.be> wrote in message
news:44f1e172$0$1212$ba620e4c@news.skynet.be...

Model nr is unreadable but someone told me it's a D110 chassis.
Old, must be about 12 years.
Set was dead but after replacing a few caps and lopt the green light comes
on but no picture, adjusting the lopt
won't make a difference, haven't checked if there's sound.
According to the owner who's my landlord the picture became gradually
darker and one morning it didn't came on
at all anymore.
I'm sure i tested all caps, there is HV as when i turn the set off a blob
can be seen on the screen.
HOT is fine, startup circuit should be good as well as the green light is
on.
Further suggestions?

Bart Bervoets

What voltage you get on the filament? And what is the b+ voltage?

 

[Bart Bervoets]

What voltage you get on the filament? And what is the b+ voltage?

Haven't checked but the neck is glowing, i remember we had this before and
it was a chip failing.
On the board is a TDA8390 and TDA2549
I have a scrap board and will swap both and see what happens.

Bart Bervoets

 

[Bart Bervoets]

Replaced TDA8390 and TDA 2549, now picture but no vertical output.
I used second hand parts from old chassis, any chance one chip is faulty,
hence no vert out?
Bart Bervoets

 

Bart Bervoets wrote:

Replaced TDA8390 and TDA 2549, now picture but no vertical output.
I used second hand parts from old chassis, any chance one chip is faulty,
hence no vert out?
Bart Bervoets

No, theres no chance that used parts off a scrapped board could ever be
faulty. Theyre actually guaranteed 100% by the Immunity From Reality
Fairy.

It must be a nice tv to spend this long on it.


NT

 

[Bart Bervoets]

No, theres no chance that used parts off a scrapped board could ever be
faulty. Theyre actually guaranteed 100% by the Immunity From Reality
Fairy.

Read a book

It must be a nice tv to spend this long on it.

It actually has, the teletext board is slotted

Bart Bervoets

 

Bart Bervoets <nekobe@online.be> wrote:

Further suggestions?

Probably G110 chassis. Consult nl.hobby.elektronica

--
Met vriendelijke groet,

Maarten Bakker.

 

[b]

G110 NO PIC - SND OK NO 200V SUPPLY TO RGB AS R3375 180R - CAUSED BY
IC7465 TEA5101A/P RGB O/P IC
G110 NO PIC OR SND WICKMAN FUSE(1A) FROM PIN5 OF LOPTX
G110 NO PIC,SCART PIC OK,IC7350(TDA8390) EARTH PIN 9 TO TEST
G110 NO PIC/POOR SND/LO HT C2633 100UF IN PSU SUB-PANEL

from highlandelectrix site. pretty comprehensive list of common philips
problems.
good luck
-B.