Question about Toshiba CF35F40 35" TV

1 Answer

I have a toshiba cf35c40 it wont turn on or do any thing?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Guru:

    An expert who has written 7 tips or uploaded 3 video tips

  • Master
  • 586 Answers

Hello,

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.

Regards.

Posted on May 29, 2011

1 Suggested Answer

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
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.
goodluck!

Posted on Jan 02, 2017

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

Toshiba REGZA 40E200U 40 LCD TV wont turn on after it was working fine the night before.


Your TV needs servicing, Most likely you have a power supply related issue. Do you have any experience with electronics repair?

Sep 01, 2012 | Toshiba REGZA 40E200U 40" LCD TV

1 Answer

My tv wont turn on i have a toshiba regza. when i do turn it on the red light in the front blinks every few secs over and over for as long as its plugged it. i tried a few things but still no solution....


The first thing to try is to unplug the TV, leave it unplugged for about 60 sec, the plug it back in. If the problem persists, this is most likely an issue that will need to be resolved by an electronic repair store/facility.

May 06, 2011 | Toshiba REGZA 42 in. Flat-Panel LCD HDTV

2 Answers

It wont switch on


try to remove the battery , then press and hold power button for 8 secs. Then insert the power cable instead of battery. Turn it on. If it wont, try to disengage the power cable and insert the battery. If still wont turn on, kindly inform toshiba about this problem and have them fixed immediately. It is either the battery, the cable or the pc unit itself that causes your laptop failure...

Mar 01, 2011 | Toshiba Satellite C655-S5139 Notebook

1 Answer

Hey, my toshiba laptop will not turn on in my house, i take it to the repair shop and it turns on, so i take it home it wont turn on, so i take it to another repair shop, they say its the battery that...


Hi

You ar nt by any chance using it anywhere close to anything magnetic or wearing a magnetic
braclet are you ????

i have heard this can be responsible for quite a few things not working correctly or shutting down problems

sorry if it seems a little crazy i find it odd my self

Feb 18, 2011 | Toshiba Computers & Internet

1 Answer

My monitor wont turn on it plugged in and every thing


my 1410 toshiba wont turnon the ac light and battery light turn on but laptop will not turn on.. any help. please

Aug 20, 2010 | Dell Dimension 4500 PC Desktop

1 Answer

Turned it off wont come back on no lite nothing


Try unplugging it for 5 minutes. I have a 43" toshiba that does the same thing.

Dec 19, 2009 | Hitachi 60VG825 60 in. LCD Television

1 Answer

My toshiba satellite a25 s207 trys to power on but wont


Hello sir, the reasons why your power supply wont turn on;
  1. It detected an overload, it is called a switching power supply, if it detects shorts, or something wrong on the mainboard it will not start.
  2. It cannot supply the right amount of current, the power supply is defective.
I had that symptom on my compaq armada, I dissassemble it part by part, then slowly reassemble it, piece by piece making sure all contacts are good and clean. As i power on the unit it turns on without a problem. to do this you should know a little thing about laptops/PCs. hope this helps

Aug 06, 2009 | Computers & Internet

1 Answer

L300 wont work


Were there any changes made before this happened?....software..hardware...any thing downloaded?

Jun 11, 2009 | Toshiba Satellite Pro L300 Notebook

1 Answer

Laptop wont turn on what so ever


I know yours is a Toshiba and the following is for Dell, but both are laptops - mine did not start for over a week! See this thread:

http://www.fixya.com/support/t534087-dell_latitude_d600_boot_up

Hope this helps...

Mar 31, 2009 | Toshiba Satellite A105-S1712 Notebook

Not finding what you are looking for?
Televison & Video Logo

188 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74118 Answers

Jaime Hernandez

Level 3 Expert

2318 Answers

Henry  Thomas
Henry Thomas

Level 3 Expert

1074 Answers

Are you a Toshiba Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...