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Shahid
Shahid, Technician
Category: TV
Satisfied Customers: 10501
Experience:  I have been repairing electronic gear since 1993 as a qualified Sony tech
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Have a Technika TV. Wants to scan all the time wen we switch

Customer Question

Have a Technika TV. Wants to scan all the time wen we switch on. Ave to switch off and on 5 or 6 times to get a picture on the screen. Can you give me some advise on wot to do pleas.
Submitted: 2 years ago.
Category: TV
Expert:  Shahid replied 2 years ago.
Hello, my name is***** be happy to assist you.
Please allow me to ask you a few questions to diagnose the problem.
- Does the TV work fine all day long once you get picture on it after switching off and on 5 or 6 times?
- Does the TV straight go to channel scan screen when turn On?
- How old is the TV and how long it have had the problem?
- Can you get me the model number written on back of TV?
Thanks.
Customer: replied 2 years ago.

yes the tv works ok .yes. 12 months old. lcd 46-270

Expert:  Shahid replied 2 years ago.
Thanks for the info.
Can you please check the menu button on TV and its remote control to see if it is sticky and might causing the problem?
Customer: replied 2 years ago.

no theres no problem done that

Expert:  Shahid replied 2 years ago.
Thanks David for the info.
It seems problem of failing EEPROM chip which stores the firmware (Tv internal software) data that doesn't boot up properly when turn On the TV so it goes to channel tune screen, upon few times On and Off the EEPROM chip start working in normal way so the main processor chip gets saved channel data and you see the picture on screen.
I'm sorry there is no easy or quick fix for this problem and it is definitely hardware failure that needs defective main board replacement to resolve the issue, required replacement main board is available at following supplier (please double check the part number off of main board inside TV before ordering the replacement main board)..
http://www.lcd-plasma-parts.co.uk/t-msd306-68a-1a1l3259-technika-lcd-46-270-tm46e57bftcug351-main-board
And if TV is still under warranty then please call the number written on warranty card to get it repaired free of cost.
I trust my input will help you out. Please feel free to respond if you have any additional questions.
A positive rating to answer would be greatly appreciated, please click on smiley face under the answer then click submit button so I can get credit on website for my work.
Regards,
Shahid.
Customer: replied 2 years ago.

Is this why it wants to 100 per cent scan all the time

Expert:  Shahid replied 2 years ago.
Yes David, due to defective EEPROM (memory) chip, main processor doesn't get stored channel data thus it thinks it should run the channel scan option to get available channels data.
I hope these info will help to understand whats going on inside TV. Please feel free to respond if you have any additional questions.
Thank you.
Customer: replied 2 years ago.

This part sounds like it could be very expensive will it?

Expert:  Shahid replied 2 years ago.
Please check the link I gave you in previous reply and below again, the main board is available for 30 Pounds..
http://www.lcd-plasma-parts.co.uk/t-msd306-68a-1a1l3259-technika-lcd-46-270-tm46e57bftcug351-main-board
Customer: replied 2 years ago.

THank you for your time and answers.,

Expert:  Shahid replied 2 years ago.
You're welcome David,
I wish I had better news about the TV. Please feel free to respond if you have any additional questions.
A positive rating to answer would be greatly appreciated, please click on smiley face under the answer then click submit button so I can get credit on website for my work.
Regards,
Shahid.
Customer: replied 2 years ago.

Would it be possible for me to fit this motherboard myself

Expert:  Shahid replied 2 years ago.
It depends on your expertise, however, main board replacement is pretty straight forward work and no soldering work is needed, its like plug and play type work you do in computers.
Need to unplug power cord from wall socket, remove back cover of TV, unplug connectors on main board (the one where all inputs are located) and remove the fixing screws, unplug connectors to get the board off of TV chassis, put the new board and tight the screws, plug the connectors, replug power cord and turn the TV On.
Please check the following link to view the main board image which will help to locate it in TV and again, get the part number off of main board in TV to locate exact/ identical replacement main board as different version/ part number main board may not work in TV...
http://www.ebay.co.uk/itm/Technika-46-LCD-TV-46-270-Signal-Main-Board-T-MSD306-68A-12023-T460HW08-A1-/321395704025
I trust my input will help you out. Please feel free to respond if you have any additional questions.
Shahid.
Shahid, Technician
Category: TV
Satisfied Customers: 10501
Experience: I have been repairing electronic gear since 1993 as a qualified Sony tech
Shahid and 5 other TV Specialists are ready to help you
Expert:  dianne-cssm replied 2 years ago.
We received your customer service inquiry, however, we are unable to respond to you because we do not have your email address. Please contact customer support at [email protected] co.uk and provide us with your email address and a link to this question page so that we can help you. (http://www.justanswer.co.uk/tv-repair/8lhsn-technika-tv-wants-scan-time-wen-switch.html). Thank you, The JustAnswer Customer Support Team.

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