Philips 25GR5760 G110 no tune

[hma]

Hi
Main problem in Philips Tv type 25GR5760 G110-like

All functions ok including low high bandswitch in tuner
but no way to tune. Stored channels are not available
because of this.

Any clue please.

 

[Alain.Beguin]

"hma" a écrit le/schreef op/wrote on 5/10/2003

Hi
Main problem in Philips Tv type 25GR5760 G110-like

All functions ok including low high bandswitch in tuner
but no way to tune. Stored channels are not available
because of this.

Any clue please.

What is the voltage on P11 of the channel selector U1000?
Does it vary with the tuning?
Very often the channel selector has to be replaced
UV816 4822 210 10365

 

[Darko Stajic]

Is this TV use TMP47C634N-xxxx + 24c02?


Darko

 

[hma]

Is this TV use TMP47C634N-xxxx + 24c02?

Have to check.
And if so what do You recommend?

Thanks

 

[hma]

Alain.Beguin

What is the voltage on P11 of the channel selector U1000?
Does it vary with the tuning?

Seems it does not. Have to messure this one.

Very often the channel selector has to be replaced
UV816 4822 210 10365

That's really bad news. uv816 is the one.
Better I go find a replacement The picture was exellent.

I think You'r right. Thanks!

 

[Darko]

Is this TV use TMP47C634N-xxxx + 24c02?

Have to check.
And if so what do You recommend?

Channel search indication exists? If exist, check/replace zener 33V.
Resolder tuner (inside).

Regards
Darko

 

[Alain.Beguin]

"hma" a écrit le/schreef op/wrote on 5/10/2003

Have to check.
And if so what do You recommend?

Thanks

Could be, the 24C02, but first check the tuner if your remote
control works probably the main processor will be ok.
The 24C02 stores the stations. But if your tuning voltage does not vary
it will probably be the tuner.

 

[hma]

Darko

Channel search indication exists?
Yes

If exist, check/replace zener 33V.
Resolder tuner (inside).

Good hint. I will try this also.
Cheers

 

[hma]

Alain.Beguin

Could be, the 24C02, but first check the tuner if your remote
control works probably the main processor will be ok.

Checked ok!

The 24C02 stores the stations. But if your tuning voltage does not vary
it will probably be the tuner.

Ok this makes the problem clear now.
It must resolve the problem I think.

Thanks
Thank You all for your nice hints it's all a great help.
I will post the results for shure.
Cheers