Question about Toshiba CF35F40 35" TV
Your TV is obviously having a power problem. Once a TV does not turn on, then it means it is having a power problem. This problem may have occurred as a result of irregular power supply, or excess power supply or power surge.
The TV is receiving current but cannot circulate or transfer the current to other necessary part of the TV because of the defective power supply board. You might be lucky it's just a blow fuse. Also a defective transformer can cause your TV not to power on. (Before you go any further, check the power wire/cord connected from the wall (plug) to the TV. This is to confirm if the power cord has not loosed contact from the wall.)
All these can be checked on the power supply board.
But more often bad capacitors causes problem on the power supply board. I do not think the power board needs replacement, rather those defective capacitors is causing this issue. Open unit up and take a look at the power supply board.You will probably see one or more electrolytic filter capacitors that are bulged up in the top-not perfectly flat like the others.
The value of these capacitors will be different, most likely they will be somewhere around-820 to 2200uF/25 V( or /10V sometimes)
You can replace them with same values but I would recommend the voltage rating to be higher(like 35V for an original 25V) for reliability purposes.
What happens is,these bulged top capacitors will cause a low and unfiltered DC voltage=main board will malfunction(the relay will keep clicking until the caps are holding enough charge to bring the voltage up over a threshold point).
You can buy these capacitors at any Fry's or Radioshack store or you can order them online at vendors like "mcmelectronics.com"(look for electrolytic capacitors). After replacing these capacitor(capacitors) most likely the normal operation will be restored. Or you can by a refurbished complete power board to save you some stress.
Note: There may be also some other causes for this symptom ,like a defective T con board ,or main board,but the bulged top capacitors are the most common cause for this issue.
If you don't know about TV repairers, take the TV to the nearest repairman to fix the fault for you. Also, note that TV stores a lot of current, so wait a while before opening the TV back cover.
I hope this helps.
Posted on May 29, 2011
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Posted on Jan 02, 2017
Tips for a great answer:
Sep 01, 2012 | Toshiba REGZA 40E200U 40" LCD TV
May 06, 2011 | Toshiba REGZA 42 in. Flat-Panel LCD HDTV
Mar 01, 2011 | Toshiba Satellite C655-S5139 Notebook
Feb 18, 2011 | Toshiba Computers & Internet
Aug 20, 2010 | Dell Dimension 4500 PC Desktop
Dec 19, 2009 | Hitachi 60VG825 60 in. LCD Television
Aug 06, 2009 | Computers & Internet
Mar 31, 2009 | Toshiba Satellite A105-S1712 Notebook
Nov 25, 2008 | Toshiba Satellite L45-S7423 Notebook
Sep 23, 2017 | Televison & Video
188 people viewed this question
Usually answered in minutes!