Tuning problem linked to eeprom ic
I was working on this panel and as I am about programming some tv stations on it I detect that it fails to pick any stations.I replace the tv tuner though the tuning and supply voltage were present but its still the same.Noting well that the memory ic (eeprom) of most of this present tv boards contributes a lot to their operation so I changed the eeprom ic.I search for the tv stations again and they were perfectly programmed.The eeprom is 24CO8 and it is faulty component on the board.
Jvc Television with Plain Raster Repaired
The tv is a jvc model,it suddenly switches off when in use but brought out a plain raster afterward.
After battling with it for quite sometime without good result i decide to take some voltage readings.200v supply to tube base from flyback transformer was around 57v which is wrong and an indication of fault along that line,so i need to trace the fault from that line to detect what the fault is.
from the picture above diode D553 and the fuse resistor R554 tested good , the capacitor C557 is of the value 250v2.2uf but reads 0.57uf when measured by my esr meter.I replace it 250v10uf and the fault was cleared completely and the tv brought back to life again.
can TDA8361 be the cause of this fault
