Question about Toshiba 27AF43 27" TV
Toshiba 27AF43 on Dish network, no problems with other TV's
I had the same problem with horizontal white lines about 4 inches at the top of my 5 year old 27AF43 Toshiba. Solution, I found by google was to replace C407 but no directions. Here is how I did it.
First is to locate a new polarized 100uf 35V capacitor. I was able to buy 5 of these at a local electronic parts store for $2.50.
Next is to open up the TV. Turn off the TV and unplug all wires, place TV screen side down, remove the seven large screws, three on each side and seventh a couple of inches up from the bottom and about nine inches in from side. Then remove the two small screws in the area where the cables plug in. Gently lift off the back cover.
Put a large magazine or newspaper over the bottom part of the picture tube to protect if from scratches.
Next is to pull out the cicuit board at the bottom of the TV, it's the only one. Clip the cable ties holding some of the wires to give more freedom of movement and then gently pull up on the board. It doesn't need any fidling with clips or tabs or such, just pull straight up. You don't need to disconnect any wires.
Then locate capacitor C407. It is black and marked on the cicuit board and is 3 1/2 inches in from the edge and right by the corner of a heat sink. It will have 100uf 35V written on it. Note which side is the negative (this is important). It will be the same side as the other capacitors close to C407.
Next is to replace C407. Take some measurements from the edges of the cicuit board so you can locate C407 (from the bottom) and then flip the board over and locate C407's leads. Draw a circle around its leads with a felt pen. Us a fine tipped soldering iron and a solder ****** to remove the solder. Be careful with this. Might take a couple of goes but eventually you will beable to wiggle C407 and it will come out.
Put the new capacitor in and make sure the negative is on the correct side (this is important). Solder the two leads and be very careful the solder doesn't bridge between the two leads. Let it cool for a few minutes then use a pair of side cutters to cut off the excess leads.
Slide the circuit board back and push gently down until it snaps into position.
Remove the protective magazine or newspaper.
Use a couple of new cable ties to replace the ones you cut.
Replace the back cover being careful that the power cord is positoned correctly into its little notch. Replace the two small screws and the seven large ones.
Reattach the cables. Cross your fingers and turn on the TV. With luck your white lines will be gone.
Posted on May 05, 2009
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:
Jul 22, 2010 | Toshiba 27AF43 27" TV
Mar 27, 2010 | Toshiba CN36X81 TV
Jan 09, 2010 | Toshiba 27AF45 27" TV
Jan 07, 2010 | Toshiba 27WL46 27 in. LCD Television
Jun 16, 2009 | Toshiba 27AF43 27" TV
Jan 05, 2009 | Toshiba 27AF43 27" TV
May 02, 2008 | Toshiba MW27FP1 27 in. TV/VCR/DVD Combo
Oct 28, 2007 | Toshiba 27AF43 27" TV
238 people viewed this question
Usually answered in minutes!