Toshiba 36A40 36" TV - Answered Questions & Fixed issues

I would start with the Tcon but the main would do this as well, along with the power board...test the voltages coming from the ps board when its giving issues and see if they are ok, if they are try the tcon board

These input plugs are often soldered on to a printed circuit board mounted to the internal chassis of the TV. Much of the circuitry in a TV is lethal when switched on, and in some types, even when not plugged in for a time. Therefore I'd advise taking it to a repair shop and asking for a cost estimate. With parts and labour that might even approach the cost of a new one, for which you get a warranty. .

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ Type in the brand name of your device, in the search box [at the top right] of the display window and the Search will start at once as you type in, and will show you all the related posts. It will make surf easy.

Short of it being taken back to factory reset via its menu system, which most will do in some way (Initial setup sequence) the other possible cause could be its tuner which may have a partial fault if so then it is possibly a service call out. Unless its a simple job, sadly these days it will have to go to a service centre contact Toshiba for a local repair place they will have better knowledge of your item.

Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts. http://electronicshelponline.blogspot.com/ Type in the brand name of your device, in the search box [at the top right] of the display window, and press enter to get all related posts. It will make surf easy. These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes.

Press the menu button and find the auto search programs. wait till the end of searching then you can watch all the channels.

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/ Blinking codes details to many popular brand TVs are given. Surf the site with patience.

Sounds like a loose solder terminals at its vertical scan output section circuit. Contact any service technician. If you wish to get some details; check the site linked here. Viewing it in "Mosaic" will make surf easy. http://electronicshelponline.blogspot.com/

Are you turning up on the tv itself? If you have a cable box, there is a separate volume that needs to be turned up too!!

hi, usually its the infrared receptor that need to be replace, he is placed near the stand by light.
in a rare case the problem is at the 5v voltage that goes to the receptor. more rare is the possibility
that something is wrong at the microprocessor circuit. good luck!

The fault is with its main board, horizontal output section circuit. This is not a user repariable fault.

How many times the timer light flahes at one time switch ON. These flashes are fault symptoms. From the number of flash, you can get an idea about the faulty circuit side, inside the tv. These flashes are called blinking codes. If you wish to get more details, surf the following link. There are over two thousand and four hundred posts. All are related to television and other domestic electronic equipment service help. You can get a solution there. Type in the brand name to your device to its search box, can be located at the top right of the display window. It will make search easy. More than Nine Lakh viewers cannot be wrong.http://electronicshelponline.blogspot.com/

Check and replace damaged component/s in its main power supply regulator circuit.

turn off the close caption in the settings.

Hello
If you are using this TV with Cable connection, the strength of cable signal is low. Contact the cable operator and ask him to put a signal booster at your premises. If you are using it with On Air transmissions receiving, include an antenna signal booster at the mast of your yagi antenna on roof. OK

HI,you might wish to unplug the TV for an hour or more. If this power reset does not allow the TV to turn on component failure is indicated. These sets are assembled using the wave soldering process they are known for having cold solder connections.

The safety circuitry shuts the TV set down or will keep it from turning on when it detects a problem. This model of TV has over 2,000 parts, which includes millions of transistors inside the integrated circuits. The capacitors will change value, leak and become defective. Resistors will change value and burn. Diodes and IC can go bad.

This may have a domino effect and cause other parts to fail. Replacing one defective part may make the TV operate for a short time but the part will fail again if the parts that caused the failure to begin with are not replaced.

The only way to know for sure which parts that are no longer within factory specs and for a proper repair all the electronics must be diagnosed by someone with the correct electronic test equipment specifically designed for TV service and the skills to use the test equipment. I wish I could tell you there was a quick fix or button to push that would fix the TV but that is not the case or the solution needed to get the TV operating correctly.

You have a convergence board failure. Changing one board will not necessarily fix it. It is recommended to change all 3 boards in the unit. many try this as a DIY and fall afoul because it is a specialist job to re-tune and reset the parameters. The cost then becomes greater than if a tech did it correctly the first time. Be advised it is not a simple DIY.It requires soldering and de-soldering skills, specialized tools and a knowledge of circuit diagrams.



Thanks for using fixya

This can be corrected. You will need to use caution. Pull the back cover off. You will see a flyback transformer. You will note, that a suction cup is connected to the back of the picture tube. Follow the red lead and you will see the flyback transfomer. You will also see, two potentiometers on this transformer. The top knob will correct the focus you are talking about. The bottom knob will increase or decrease the voltage to the picture tube. Just work with the top pots. It will say focus on the knob. Turn back and forth as you watch the lettering of an informational program. This will be helpful. Thanks for asking and show all hands of support!

Resolders the FBT-(flyback tranformer).Resolders the video board connections sockets holes,that the board connected to the CRT-(tv tube).Plug in the tv,to have power to the tv,take out the tv video board,for exposer of the CRT-(tv tube).Take an electrical wire with a good insalation in it,grounded to the tv steel frame some where.Take the other end of the wire go toward the open high voltage CRT-(tv tube).U will hear a pop sound,than ur tv CRT-(tv tube) is a 100% clean out of contaminations or u will hear a deeing sounds only,mean the tv CRT-(tv tube) it is to old to pop anymore,just let tv deeing sounds going on for like about 20 mins to rejuvenated the old CRT-(tv tube).After this repluging the tv video board for a tv signal and readjust the button on the FBT-(flyback tranformer) that said focus to fix the CRT-(tv tube) focus problems.

Sounds like theres a leaky capacitor in the screen drive circuit. I have seen this problem also be a gassy crt but was able to clean off the grids of the CRT with a crt/rejuvinator. It happens because of low emmissions in the tube and when white is on thats a mix of all the colors, so the tube works harder. I bet when you whatch a movie and the scene changes suddenly to a white or brite scene the pic looks a little washed out. If this is not the case then I aggree with the Pravin and try it on another TV just to be sure .. This is not a repair for a consumer to do, though however it is only a three year old set you stated, so there should be life left in the tube, so im kinda thinking a capacitor is bad. Seek out a yechnician to check this out for you as a TV is not a place to see it you can fix it or to exoeeriment with. Good Luck

The Toshiba sets are well known for vertical problems, if the problem is bad enough it will cause the tv to shutdown to protect the picture tube. To properly diagnose the issue a tv technician will be required.