Question about Televison & Video

1 Answer

I have a sony model #KF-E42A10 i bought a new bulb and installed and now i have a big yellow spot on my picture it is almost the size of the screen and i contacted sony and they said there was a problum with replacement bulbs can u tell me where to go to get a bulb i would think it would be free as i just paid for this one in the last couple months thank you for your time

Posted by Anonymous on

Ad

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Master
  • 12,061 Answers

Http://www.givemefile.net/smanuals/lcd_tvs/sony/file/8936.html
Please find above your service and repair manual, please work through the troubleshooting steps and you should be able to isolate and repair your unit.
Hi, well I applaud you for wanting to have a go, but you must make sure that you are starting in the right place, That is The Power Supply, as, if, that isn't right nothing else can be. But you simply cannot do anything without a Service Manual. In this it has everything one needs to repair the set. OK if it is shutting down, after that amount of time, of working and then faulting, then it is most definitely a "Thermal" problem, the way we "Find" problems such as this is "Freeze Spray" you use this on each component that is suspected of being the "Culprit" and you will soon,find that errant component. Now also not every fault is a Capacitor, I see many, many people that think, that Capacitors are always the "Culprit" now while that may be true in a few cases, a faulty Electrolytic Cap, or ordinary, Cap goes faulty, this is only a SYMPTOM, something has damaged those caps causing them to "Fail". One MUST always find the root "Cause", otherwise if you just treat, the SYMPTOM, the "Cause" will just make the "Symptom" come back, in short order, as the prime cause still, hasn't been fixed., Now Capacitors hate AC ripple, or Over Voltage. That’s it. Oh.. and Heat, if these Capacitors, are too close to a Heat Source, then that’s a prime cause of failure. Resistors, hardly ever go faulty, and if they do, it is generally obvious. However it doesn't hurt to check values with our Multimeter. Remember though resistors are made, with up to 20% tolerance from stated value, as such, are not too critical, unless in Timing circuits etc. Always check, the Values, of resistors, as with any other component, with the power OFF. Now Diodes especially "Zener Diode", are another thing to check, those and ordinary "Signal Diode" should always be suspect. next we have Transistors and IC's. The Transistors MUST ALL be checked to see if they have a good, "Junction" this is done, with our meter set to "Diode Test" and usually are about 0.6 to 0.7. With IC's you must check, voltage levels, or Logic Levels, going in and out, have a look at the circuit diagram, and it will tell you what they should be. It is a good idea to always measure the Power Supply voltages, see if a "Rail" is Low, that will be because some component has gone somewhat or all short circuit, to Earth, now, if the "Rail" is Higher, suspect an "Open Circuit" component, like a Diode, or Transistor. The voltages expressed in the manual are spot on, ANY variation MUST be investigated. I have been doing all this for over 30 years now, and I do indeed wish, we could have a set of "Symptoms" and be able to say.. "Oh that’s the so-in-so and replace this" however unfortunately this although does happen, most "Symptoms" can have literally tens, of "Causes" all often "Interlinked" One simply has to do a methodical troubleshooting procedure, and always think, "are my Voltages Correct" as this is how, you Fix the problem, by making them so. Keep up the good work. If that link above doesn't furnish, a Service manual, it is imperative you get one, even if you must pay for it. It will pay for itself in about 2 mins. The Tools you will need are A SERVICE MANUAL a Good Multimeter, a Signal generator, a Signal Tracer, pref an Oscilloscope, Soldering Iron, De-soldering iron, Probably, too, A SMT Hot Air desolderer (for the Surface Mount IC's), Compressed Air, An Anti-Static Wrist Strap, (MOST IMPORTANT, to prevent ESD), Cutters, Screwdrivers, sometimes, Torx, drivers too. Tweezers, are real handy, a magnifying glass, or eyepiece, a good strong white Light. OH, and you MUST have the original remote control too, (Sometimes one must obtain, purchase, a special “Servicing remote”) as one needs this to "Program" the Computer in the TV, after, and during servicing, and to be able to put the TV, into "Service Mode" too.

Posted on Jul 22, 2010

Ad

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 Technician 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 repair professionals here in the US.
click here to Talk to a Technician (only for users in the US for now) and get all the help you need.
Goodluck!

Posted on Jan 02, 2017

Ad

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

I have a sony lcd projection tv model kf-60xbr800, green spots on the lower right corner , it start with one spot and now the spot are all over the screen


Those Rear LCD TVs get bad light engine on some. Causes fuzzy spots size of quarter. Or sharp small bright spots looks like road map or 'stars'. Need new/rebuilt light engine.

Apr 08, 2014 | Sony Grand WEGA KDF-60WF655 60" Rear...

1 Answer

Sony KDF-E42A10 42 in. LCD Television Problem JUST INSTALLED NEW BULB, NOW SCREEN IS YELLOW


Sounds like a bad Optic Block....there is a class action suit against Sony for this. See if you join the suit or just call Sony and demand that they send you a replacement OB....labor would have to be on you. Good luck.

Dec 25, 2010 | Sony Televison & Video

1 Answer

For KDF-E42A10 When picture is black, a bluish fadded spot appears in the center of screen. When picture is white, a yellowish fadded spot appears in the center. Do I just replace the bulb?


no this is a problem with your Optical block your LCD chips have gone bad you need to replace this part to fix this issue the bulb will not solve this kind of issue

Oct 15, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

Is there HDCP chip in Sony KF-E42A10?


HD programing 1080i,if tv it can get that mode.No part change in tv to get HD it can or not, that it.

Jan 13, 2010 | Sony Grand WEGA KDF-42WE655 42" Rear...

1 Answer

I have a Sony Grand Wega KF-E42A10 and a blue aura has appeared at the bottom centre of the screen. I recently changed the bulb, but it was working fine for the last 2 months or so, since I changed the...


you have a light engine problem its a warped blue lcd plate

it will require a light engine change out ou might see if you have your reciept and get your model and serial and call sony and see if there is still assistance for this problem

Oct 23, 2009 | Sony Grand WEGA KDF-55XS955 55" Rear...

1 Answer

I have a sony kf-42sx3oou, i have just had the lamp replaced, since replacing it a few blue spots appeared in the top right corner but today a yellow line has appeared on bottom left hand corner, could you...


This problem was probably there before, but you only noticed with the new "Brighter" bulb.

This TV will require replacement of the LCD Prism unit.

This Prism blocks and allows colors so that the 3 LCD images may be mixed to produce the final image you see on the screen. When this becomes damaged or defective, it leaks colors (light). This Color Leakage apears as spots on the screens.

Where you see the spots is where the specific spot on the prism that is leaking light, the specific color that is leaking also.

This parts cost alone is normally $500 to $1000 dollars but is usually replaced under warranty. If out of warranty, I suggest living with it or selling it if out of warranty. Turn down the Brightness and it will not be as noticeable. I am sure you only see this with bright images.....like white backgrounds and such

Good luck.....

Mar 04, 2009 | Sony Grand WEGA KF-42SX300 42" LCD TV

3 Answers

Hitachi projector model CP X260 projects yellow spot on screen


This is probably the polarizing filter. It will need to be replaced. It should not cost very much to fix.

Jan 07, 2009 | Office Equipment & Supplies

1 Answer

Green spot on picture


Greenish yellow spot only means one thing. You have a defective lite engine. The only fix is to replace the engine. This part is very
expensive. Average cost $835.00 Part number A-1606-008-A

Best regards
circuitcity

Dec 08, 2007 | Sony Grand WEGA KF50WE610 50" Rear...

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

Related Topics:

397 people viewed this question

Ask a Question

Usually answered in minutes!

Top Televison & Video Experts

The Knight
The Knight

Level 3 Expert

74887 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Cindy Wells

Level 3 Expert

5265 Answers

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

Answer questions

Manuals & User Guides

Loading...