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Equipment Repairs => CRT TV forum => Topic started by: Duartes on August 25, 2008,11:23:23

Title: TV Alba CTV840
Post by: Duartes on August 25, 2008,11:23:23

     
Hello



Does anyone have the code to enter the service menu of  this TV that can send to me?

Thank you

Cumptos

Mário Santos

      

Title: Re: TV Alba CTV840
Post by: brainstorm on September 03, 2008,08:56:00

Hi, I have the service manual and it doesn't mention how to access the service mode so I assume it doesn't have one! Which adjustment do you wish to carry out?
 Also a really common problem on these sets were the two small electrolytic capacitors in the primary of the power supply, you will need to uprate these to 105 degrees. When they fail they usually cause high HT and can cause all sorts of problems.

Title: Re: TV Alba CTV840
Post by: Duartes on September 03, 2008,09:19:45

 Hi    
Thank you for your answer.

I am in Portugal, here the bearer of sound is different then.I Must enter into  Service to set up the sound configuration.

Thank you

Mário Santos - Portugal

Title: Re: TV Alba CTV840
Post by: brainstorm on September 05, 2008,11:30:54

Hi,

Ok now I understand!
This is not an adjustment, you will need to change 2 ceramic filters in the audio IF stage from 6MHZ to 5.5MHZ for your country, and if you are lucky then that is all you will need to do.
If you are getting any crackle or hiss on the sound after you have done this then you may have to tweak the Sound IFT coil slightly but be careful that you use the correct tool or you might break the ferrite core. Good luck!