Question about Toshiba 65HX81 65" Rear Projection Television

1 Answer

Power button blinks and there is no picture - Toshiba 65HX81 65" Rear Projection Television

Posted by on

  • billmccurdy May 06, 2010

    do I need to take the back off and were is the chip located in the tv



1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Top Expert:

    An expert who has finished #1 on the weekly Top 10 Fixya Experts Leaderboard.


    An expert that got 20 achievements.


    An expert that got 10 achievements.

  • Toshiba Master
  • 14,553 Answers

The most common reason for this in this model (model indicated is 65HX81) is one of the two STK-392-110 Convergence chips is shorted and has taken a protection part out. The set will instantly detect a missing voltage and shut down. There are a few easy ways to try to prove if this is the case or not. A lot of this depends on your skill and if you have a volt/ohm meter. If I was looking at the set (I have fixed hundreds of them) I would first look for the two pico fuses that protect the chips mentioned. All these sets produce two voltages in the power supply and one is a + voltage (22-30 volts) and the other is identical but a - or negative voltage. In the model indicated each is protected by a pico fuse (does not look like a glass fuse but in these sets is usually a 5 amp device and I can supply photos of what they look like.) If either of the fuses was blown it means one of the two chips got it. The other clue would be to carefully look at the group of gray resistors in front of the two chips and check them with a ohm meter--like testing a fuse--they are fast acting and usually not burnt but if no reading across one of them you have found your problem. If the fuses indicated are good I would test for voltage on each and if it is good and the resistors around the chips are good you have another problem. Fixing sets is all about trying to narrow down where the problem is and then zero in on it. This is the most common problem and it should be examined first. Let me know your skill level--I am in California and usually here from after 3 pm to after 8 pm every day PACIFIC time. I am here to help you. Feel free to ask me any question as there are no foolish questions-- SD TECH

Posted on May 06, 2010

  • SD Tech
    SD Tech May 06, 2010

    yes, you will have to remove the back cover of the set and do much more to get at the chips. I will enclose/attach a photo of what the chips and the fuses look like--fuses may be a different color but usually will be on board on far left as you look from the back. The two chips are usually on two metal heat sinks with fins near the middle of the set on the board on the right.

    You do know how to test and have a meter to do this?

    It is not rocket science but you will not be able to tell if the fuses or resistors are bad by looking at them--it does not work that way. What is your skill level or experience?

    I never know what level of skill someone has unless they tell me--I have helped people who ranged from novice to electronics engineers.

    Note: One photo will show what the chips look like, a second what the fuses look like (should be orange or green in color) and a third will show what the metal heat sinks the chips are bolted to look like--it is a different brand but you will know what to look for.

    SD TECH.



1 Suggested Answer

  • 2 Answers

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

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


Add Your Answer

Uploading: 0%


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



Related Questions:

1 Answer

Picture blinking

Most likely you have a few dry capacitors on the power supply board, if you have any electronics experience, remove back, locate power supply (usually has large heat sinks) and c

Aug 21, 2009 | Dell W4200 42 in. HD-Ready Plasma...

1 Answer

I have a panasonic 47wx42f. the power button blinks and no pic

how many times does it blink between pauses as it may be a error code

Jul 21, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

The green light blinkig and does not stop, no picture

Did you try unpluge from the wall, and repluging back after 10 min.
Also run the self diagnosis by pushing the menu and device buttons on the front and let me know the code?


Apr 23, 2009 | Mitsubishi WS-65909 65" Rear Projection...

1 Answer

Red Lights on the Power button blink and picture goes dark

60PL9200D/37 When I unplug it for a while and turn it back on, the picture starts to come on, but it turns dark. And the red lights on the left and right side of the power button blink. Sound but no picture.

Feb 02, 2009 | Philips 60PP9202 60" Rear Projection...

1 Answer

Cannot see picture....

you probobaly. need a new bulb, my dad had the same problem. he orderd a new bulb off the internet and now it works just fine

Apr 22, 2008 | JVC HD-52Z575 52" HDTV

Not finding what you are looking for?
Toshiba 65HX81 65" Rear Projection Television Logo

Related Topics:

73 people viewed this question

Ask a Question

Usually answered in minutes!

Top Toshiba Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74211 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