Premium TV chassis t08-t19ka is in stanby
Measured + B, says it has 100 volts, well now measure the other voltages that provide or should provide the other diodes, you must also follow these ramifications, identify the transistors that make voltage regulators, you must see or identify the one that does the role of On / Off
Now friend neg2013 already clarified a doubt with colleague javier chavez given case not to discard the eeprom because I really do not have one or the recorder at hand. that I have to place another micro jungle this chassis has the (toshiba -hay-81 8873cscng6up3) I got the (toshiba-hay-29 8873cscng6v11) would serve as a replacement.
Greetings grateful for the diagram I commented the voltage of + B remains unchanged stable the base of the driver and had already measured 0 volt. and the power pin remains if variation 2.1 volt. I have also taken the key pin in the jungle and if it has variation by pressing the ch + button to turn on
If there are changes or variations in voltage on pin3 (Key) and there is no response on pin64 (Power), possible internal damage to the EEPROM or the microprocessor.
Place another EEPROM previously recorded with the DATA brand and model information.
Isolate pin64 from your connection track and measure on the same pin if there are changes to the ON order.
Heat the microprocessor oscillation crystal pins with the soldering iron and then try to light.
Negative friend Javier equal heating the glass no attempt to light. now friend a question regarding a doubt with the (pin 17 of the micro jungle this pin is the H-vcc 8v I understand in my theories that this pin is jungle feeding for the horizontal start) the doubt I have is this pin is fed in stanby or once the tv is turned on. why that 8 volt voltage is not present
That 8v voltage is switched to the ON command and is output from the V554 transmitter.
Depleting resources, also change filtering on the power line of the microprocessor's work source and EEPROM
It would not be useful to retouch welds on the micro-jungle pins, avoiding leaving unintentional connections or short circuits between pins.
Now, my friend, I am going to follow the steps that I recommend with food, but in case I do not discard the eeprom because I really do not have one or the recorder on hand. that I have to place another micro jungle this chassis has the (toshiba -hay-81 8873cscng6up3) I got the (toshiba-hay-29 8873cscng6v11) would serve as a replacement.
OKAY...
Did you try to turn on by taking out the Eeprom, that is, without the Eeprom placed on the card?
The variants in the series are the changes in the internal programming of the microprocessor. Exhausted the suggested tests even changing the glass you can experiment with that part and observe effects.
Ok, that's good.
Congratulations on your achievement and perseverance to get the solution
Until a next opportunity.