Question about Optimus Heating & Cooling
I REMOVED THE FUSE OF IT BUT IT STILL DOES NOT WORK
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Posted on Jan 02, 2017
SOURCE: Proview Pl926wbi
This is an inverter board problem. The inverter supplies the high voltage and frequency to run the CCFL backlights. The board has a sensing circuit to shut down the output if too much current is going to the backlights or it will shut down if the transistors overheat. I have replaced transistors on some boards with higher rated transistors and they have worked great for years. Sometimes it is just a cold solder joint on the inverter board. Replacement boards are expensive but not too difficult to replace. Repair requires some ability with electronic boards and should not be attempted if you do not posess the skill. You could end up damging other parts that cost more.
Posted on Jan 18, 2008
SOURCE: My panasonic genius old as
If it stops at 16 seconds and is a sensor model, it probably has a defective humidity sensor.
You can order Panasonic parts here.
After you look into this, if you still need help, please write back with your model number.
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Posted on Aug 12, 2008
SOURCE: Turns on and turns off.
This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR LEAKY C9A60 470 PF 1000 V PART # 154P400030, PARALLEL TO D9A57 ON THE POWER PCB. 2. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. OR your TV has "COOLANT" (ethylene glycol) on the circuit boards. This fluid comes from the CRT's (picture tube) this fluid is used to keep the CRT's cool, such the name. This fluid from the CRT's leak when TV is on for long periods of time, the chamber expands and the seals leak.
One can remove this fluid by using "acetone" & small brush. The fluid is hard to see, use bright light, they spots can be smaller then a DIME. Also, the fluid can corrode the parts and traces on the boards. To protect the TV in future place heavy plastic or thick cardboard over affective area, make sure TV has proper air flow around TV. Good Luck, big IRISH.
Posted on Sep 30, 2008
1)Turning itself off can be as a result of the sensor getting feedback of not enough ventilation.Ensure unit is able to breathe by bringing it away from the wall to allow airflow. If that doesn't fix it THEN>>>>>
2) The Magnatron which is the heart of the unit is damaged and so the sensor reads overload and shuts down as a protection against fire.
Repair of the magnatron often exceeds the value of the machine and in your case is not worth repairing. You can buy used ones and refurbished trade ins cheaper than your repair costs will be
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Posted on Sep 13, 2009
Testimonial: "Thanks for the feedback and your input about the relative costs of repair vs. the value of the machine. Will follow the advice"
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