Sony Trinitron Troubleshooting and Repair
This is a repair for a Sony Trinitron Model KV-40XBR800. This fix is also for many different Sony Trinitron CRT TVs. Some symptoms you may find on other models is 1) Occasional power up and sometimes the led just blinks continuously 2) Has sound but picture won’t come on.
This video explains a do-it-yourself process to fixing your Sony Trinitron CRT with a six blink error code. A professional repair might run in the hundreds of dollars. The replacement parts needed for this model cost only $20-$24. With the right equipment this can be a do-it-yourself project that will save a considerable amount of money.
The Sony Trinitron CRT television model KV-40XBR800 will not turn on; there is no sound or picture. The front of the TV only displays an LED six blink error code. Sony models have ten different blink error codes. Each error code gives you an idea of which area to look in for the problem. The six blink error code, in this case, usually means that two IC chips, more specifically MCZ3001D, are causing this problem. An IC is an integrated circuit microchip.
Cutting the CRT
Take off the backside of the television. You will be looking straight on to the circuit board, sitting flat. A black box in the left center is the fly-back transformer, a high voltage transformer. The fly-back is connected to the CRT (cathode ray tube). You will need to cut the CRT line. This will make the removal of the circuit board easier. After the repair is made you will go back and splice the CRT back together. (It’s actually better practice not to cut the CRT line, and work with the chassis on it’s side, or discharging the CRT Tube and removing the suction cap on the back side of the CRT.)
Locating the IC Chips
Behind the fly-back transformer you will find the IC chips that need replacement. One IC chip is further from the fly back transformer, this chip is set vertically. The IC chip that is closer to the fly back transformer is set horizontally. Using a flashlight and a magnifying glass, look for IC chips that read MCZ3001D or MCZ3001DB. Both IC chips should have the same part number.
Completing the Repair
Both of these IC chips are causing the six blink error code. Two new replacement IC chips number MCZ3001D will need to be ordered. The chips run from $10-$12 dollars a piece, plus shipping. A considerable savings if you are able to complete this repair yourself. After the chips are replaced you will solder the CRT together and fasten the back of the TV on. The six blink error should not occur any longer and your TV should be back to normal.