Hey Guys,
I am encountering a problem with this LCD TV T-con board above which I am hoping the experts here can advise me. Please excuse the flash in the photo/s below. I was taking them when there is not much sun shining here. Ok here goes…
T-con board model : V315B1-C01 found in Samsung (mine is LA32S81B) and if I am not mistaken, some of Chimei LCD TV models.
Symptom/Fault of the TV: I plugged in the TV to the Mains and Power LED standby light up. I switched on the TV, Power LED blinks 4 times (normal) but no chime was heard (abnormal). The backlight lights up but the screen is black with some vertical lines and a buzzing sound on the speaker. I decided to leave it on for a few more seconds & I could smell burnt on the back of the panel near the top (middle) of the TV. I disassemble the back panel & remove the metal cover of the T-con. Indeed a burnt SMD capacitor (CP15) can be found on the T-con. Using my multimeter, I measured shorted across it. I removed it & measured again & it is no longer shorted. I decided to leave CP15 empty & fix it to the back of the TV again. This time when I switched on the TV, Power LED blinks 4 times & a chime sound is heard (normal). Pictures appear on the screen but are washed out (negative mode). After a while, the image was better but the color especially black, contrast, gamma was off, not as a normal TV (Sorry I could not take a image of it as I have now already removed the T-con). Black image/background do have colored, fuzzy lines on them. The lines will go away if I increase the brightness though. Hope I am describing it correctly.
I have also confirmed that the other SMDs capacitors lining up above & bottom of the burnt one (CP26, CP21, CP23, CP20) are inter-connected together (parallel?). 1 point on them is connected to the VDA point (below the label C46) while the other point is grounded. VDA is measure 13.65V to Gnd. I did experiment by wiring up the 2 point of the burnt SMD capacitor & placing a Electrolyte capacitor (ranging from 1uf to 47uf) across it but still the image is not normal. I do not have a capacitance meter.
So what do you guys think? Should I just buy the whole T-con board set which I think will cost me around US$40 (including shipping from China)? TRY to replace the burnt SMD capacitor? But if I do that, I do not have the information what is the capacitance of the original burnt SMD capacitor or if there is other components failure on the T-con board. Many thanks in advance for all the feedback/s provided.
I am encountering a problem with this LCD TV T-con board above which I am hoping the experts here can advise me. Please excuse the flash in the photo/s below. I was taking them when there is not much sun shining here. Ok here goes…
T-con board model : V315B1-C01 found in Samsung (mine is LA32S81B) and if I am not mistaken, some of Chimei LCD TV models.
Symptom/Fault of the TV: I plugged in the TV to the Mains and Power LED standby light up. I switched on the TV, Power LED blinks 4 times (normal) but no chime was heard (abnormal). The backlight lights up but the screen is black with some vertical lines and a buzzing sound on the speaker. I decided to leave it on for a few more seconds & I could smell burnt on the back of the panel near the top (middle) of the TV. I disassemble the back panel & remove the metal cover of the T-con. Indeed a burnt SMD capacitor (CP15) can be found on the T-con. Using my multimeter, I measured shorted across it. I removed it & measured again & it is no longer shorted. I decided to leave CP15 empty & fix it to the back of the TV again. This time when I switched on the TV, Power LED blinks 4 times & a chime sound is heard (normal). Pictures appear on the screen but are washed out (negative mode). After a while, the image was better but the color especially black, contrast, gamma was off, not as a normal TV (Sorry I could not take a image of it as I have now already removed the T-con). Black image/background do have colored, fuzzy lines on them. The lines will go away if I increase the brightness though. Hope I am describing it correctly.
I have also confirmed that the other SMDs capacitors lining up above & bottom of the burnt one (CP26, CP21, CP23, CP20) are inter-connected together (parallel?). 1 point on them is connected to the VDA point (below the label C46) while the other point is grounded. VDA is measure 13.65V to Gnd. I did experiment by wiring up the 2 point of the burnt SMD capacitor & placing a Electrolyte capacitor (ranging from 1uf to 47uf) across it but still the image is not normal. I do not have a capacitance meter.
So what do you guys think? Should I just buy the whole T-con board set which I think will cost me around US$40 (including shipping from China)? TRY to replace the burnt SMD capacitor? But if I do that, I do not have the information what is the capacitance of the original burnt SMD capacitor or if there is other components failure on the T-con board. Many thanks in advance for all the feedback/s provided.
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