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You certainly can replace the drive IC as mentioned above, however there may be dozens of other items that can cause the same issue. Here are some; bad regulator ICs, pull down resistors for the power supply or the drive IC, capacitors in the regulated power supply.....the list goes on and on. You most definitely must take ESD precautions(Electrostatic Discharge). Without taking these precautions, you may destroy the parts you are replacing, before you even put them in! You must be able to perform fine soldering to replace any of these parts.
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you have to check on system regulator and main Program ( EEPROM),you should check parts, such as: elco, zener diodes, and transistors and final IC program, you have to check 5 Volts = VDD from the power regulator IC EEPROM, there must be an incoming voltage available to drive power on the entire circuit TV.
Open the Notebook from the back side and locate the RAM. Now remove the RAM and place it again and check, you can even try inserting the RAM in different slot if any used slot is available.
There are many regulator IC in TV you can find it easy the commonly used are 3 pin part number is 4 digit example LM7809/AN7809 this means possitive ic regulator 9v output. LM7909/AN7809 means neg. output 9V. so you can search it on your board. Good Luck
hi there, could be regulator in power supply,there are like 3 ics in charge or the regulation,ask him to get schematic for this tv and find regulator ics one ar more of them could be bad,thanks.
there is a small surface mount IC location num IC9C25 on the board next to the DM. it is at the bottom right corner if looking from the back. this a 9v regulator P/N BA09FP this might be your problem. be careful taking it off because you do not want to damage any traces. i suggest taking the input board off.
I have the same problem and it seems like it is going into thermal shutdown as ICs 104 and 106 are overheating which are fed from C138. All input source voltages seem to be correct and I do not get any voltage fluctuation from any input on the following regulator ICs. IC 106 3.3 VDC regulator is giving me 3.3VDC as a Output Source voltage and IC 104 5VDC regulator is giving me 5.0 VDC. IC102 15VDC regulator is giving 15VDC output and IC103
-15VDC regulator is constantly dropping voltage from the time of "Power On" until shutdown which takes about 5-7 minutes. I get right around -11VDC when shutdown occurs. ICs 102 and 103 are not overheating which leads me to believe that the IC 103 -15VDC regulator is faulty and putting a load on the other regulators which are trying to compensate for the voltage drop. I plan to replace the regulator with an NTE 969 replacement.
hi this model rca sounds framilure but model num on rca are more for cometic purpuses look on back and post chassis num ctc ext. and simpton mybe i can help with your convergence prob
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