KV-40XBR800 wont turn on. The standby light flashes 7 times. salt56 posted a solution to replace 2 ic's. What are ic's and where are they located?KV-40XBR800 wont turn on. The standby light flashes 7 times. salt56 posted a solution to replace 2 ic's. What are ic's and where are they located?
This problem is intermittent, as long as the TV is plugged and I attempt to turn it on it will not come on. If I unplug it for a period of time and plug it in before trying to turn it on, it will come on.This problem is intermittent, as long as the TV is plugged and I attempt to turn it on it will not come on. If I unplug it for a period of time and plug it in before trying to turn it on, it will come on.
ICs or integrated circuits- a combination of many circuit components packaged into a single chip. These chips Salt is talking about are located on the "D" board in between the Flyback transformer and the 2 large capacitors of the board. Black in color with the part number: MCZ3001D printed on their tops.ICs or integrated circuits- a combination of many circuit components packaged into a single chip. These chips Salt is talking about are located on the "D" board in between the Flyback transformer and the 2 large capacitors of the board. Black in color with the part number: MCZ3001D printed on their tops.
Thank you Salt! I found another forum for Sony TV problems, at that forum member referred me to a service bulletin recommending these 2 ICs. Im going to install sockets and replace the ICs. I will let you know what happens.Thank you Salt! I found another forum for Sony TV problems, at that forum member referred me to a service bulletin recommending these 2 ICs. Im going to install sockets and replace the ICs. I will let you know what happens.
I also have the same TV with the exact same problem. After reading the comments posted here last night, I unplugged my TV overnight. Just as expected the TV powered on fine the next day. Does replacing the two IC's with part number MCZ3001D really fix the problem? Thanks.
I also have the same TV with the exact same problem. After reading the comments posted here last night, I unplugged my TV overnight. Just as expected the TV powered on fine the next day. Does replacing the two IC's with part number MCZ3001D really fix the problem? Thanks.
Likely to have two ic's bad....both are the same. Part number MCZ3001D. Located close to each other. Must be unsoldered and new put in. I have fixed several with this problem
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How many times do this standby light flashes? These flashes are fault indication, called blinking codes. From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit stage inside the TV. Count the number of flashes. If you wish to get more detail about these blinking codes to Sony TVs, check the site linked here.
http://electronicshelponline.blogspot.com/
Pull up previous posts by its left sidebar, or type in the
brand name and model number to of your set, to its search box, and press 'Enter'
or view it in Mosaic / Timeslide option.
The problem is with its main power regulator section itself. Three
blinks - B+ over voltage protection (OVP), unit goes to the standby mode then
displays the 3 blink fault. This is also a problem in the power supply circuit,
check T603 and R672. This is the fault, and check points. For more details about the blinking codes for Sony TVs, check this.
Two
blinks - B+ over current protection (OCP), unit goes to the standby mode
then displays the 2 blink fault. Could be a short in the power supply of
any of the circuits.
Three blinks - B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is also a problem in the power supply circuit, check T603 and R672
HI, By three blink it means the B+ over voltage protection (OVP), unit goes to the standby mode then displays the 3 blink fault. This is because there is problem in the power supply circuit. Check for any dry soldering in the power supply side. If the tv is working properly for 20 minutes then its sure that there is some dry soldering joints in the power supply side. You have to resolder suspected soldering contacts using soldering ion and solder. The dry soldering joints will look like on in the picture.
SIX Blinks---No Horizontal (H STOP), no raster, goes to the blinking selfdiagnosis function immediately. Check C515 & 516 and the jungle IC, IC206.
SEVEN Blinks---High voltage shutdown. The high voltage has exceeded 33k and the unit goes immediately into safety shutdown. Check power supply regulation and horizontal circuits.
this is the (OVP) over voltage protection,the unit goes into standby mode,there is a problem in power supply circuit,you need a ohm meter ,check T603 & R672.......you can get parts at Encompass Disturbution #1-800-638-3328 hope this helps.good luck
hello
shutdown. The high voltage has exceeded 33k and the unit goes
immediately into safety shutdown. Check power supply regulation and
horizontal circuits.
YOU KNOW,SONY PRODUCTS ARE QUITE EXPENSIVE,SO DON`T HESITATE TO JUNK IT NOW AND BUY A NEW ONE.AND PUT IT TO THE PLACE WHRE MINORS CAN NOT BE ABLE TO REACH
KV-40XBR800 wont turn on. The standby light flashes 7 times. salt56 posted a solution to replace 2 ic's. What are ic's and where are they located?
This problem is intermittent, as long as the TV is plugged and I attempt to turn it on it will not come on. If I unplug it for a period of time and plug it in before trying to turn it on, it will come on.
ICs or integrated circuits- a combination of many circuit components packaged into a single chip. These chips Salt is talking about are located on the "D" board in between the Flyback transformer and the 2 large capacitors of the board. Black in color with the part number: MCZ3001D printed on their tops.
Thank you Salt! I found another forum for Sony TV problems, at that forum member referred me to a service bulletin recommending these 2 ICs. Im going to install sockets and replace the ICs. I will let you know what happens.
I also have the same TV with the exact same problem. After reading the comments posted here last night, I unplugged my TV overnight. Just as expected the TV powered on fine the next day. Does replacing the two IC's with part number MCZ3001D really fix the problem? Thanks.
did this chip fix the problem? i am having same issue.
Does anyone know the part number of the board?
Thanks, David
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