No raster, No picture and No sound:
Note: Power supply for PDP is provided with over current and over voltage protection functions. If there is over current or over voltage, this protection will function and no output.
SOUND OK, BUT NO PICTURE
- For the originally self-powered software, if the operation of PW181 is abnormal, in SDA555X there may be a state of individually switched-on. In this case very often the phenomenon of the trouble is there is sound but no image.
Setting up for the self check of the screen:
- For 42”SD screen (S42SD-YD04):Push down 2 and 4 and push up 3 of SW2001on the logic board;
- For 50”HD screen (S50HW-XD02):Push down 1 and 4 and push up 2, 3, 5, 6 of SW2001on the logic board;
Make sure resume it to the original status when the check is over.
PICTURE OK, BUT NO SOUND
NO PICTURE TO A/V
First, use dual picture function to judge if the main or sub picture has problem.
NO PICTURE IN SUB-CHANNEL
CLICK ON PICTURES TO MAGNIFY
NO PICTURE IN YPrPb or YCrCb
NO PICTURE TO TV
NO PICTURE TO VGA
DVI - NO PICTURE
If VGA works normally, it’s enough only to check the connection between socket X401and N403 and the operation status of N403. R414 is the matching resistance for its input. If it has problem the DVI image would become abnormal.
ABNORMAL PICTURE
Peculiar color, which may be caused by the following phenomena:
- A certain differential wire pair of LVDS (RX0+/-,RX1+/-,RX2+/-,RX3+/-,is abnormal, which may lead to lack of color ( it’s not a complete loss of color);
- Failure with resistor rows R550~R555,which may lead to loss of corresponding color from the gray degree corresponding to the picture of all channels. Through self-signal check by PW181, the failure is still there.
- Failure with resistor rows R419, R421, R425, R427, R431, R432, which may lead to loss of corresponding color from the gray degree corresponding to the picture of channels VGA/YPRPB/DVI.
- Failure with resistor rows R415, R418, R422, R424, R429, R430, which may lead to loss of corresponding color from the gray degree corresponding to the picture of channel DVI.
- Failure with resistor rows R342, R343, R344, R345, which may lead to loss of corresponding color from the gray degree corresponding to the picture of sub-channels TV/AV/YCRCB, or lead to abnormal brightness.
- Failure with resistor rows R207, R208, R209, R210, R211, R212 or R145, R146, R147, R148, which may lead to loss of corresponding color from the gray degree corresponding to the picture of main channels TV/AV, or lead to abnormal brightness.
- Bad connection between N203 and N204, which may also lead to abnormal picture (column bar like) in main channel TV/AV.
- Abnormal picture vertically or horizontally (bar like): Abnormal in complete line extending all the way from up downward on the screen of stand definition TV set; abnormal vertically on half screen of high definition TV set. They may be caused by the damage of the address BUFFER module that directly corresponds to its position, or may be caused by the damage of the connection wire that directly corresponds to the position of the screen. The horizontal bar like abnormality is also related to the Y driving circuit that corresponds directly to its position. To judge these phenomena, It’s possible to check it by setting the screen to the status of self check as explained above.
- No brightness in the square block area: Normally it’s caused by the damage of the address BUFFER module that directly corresponds to its position, or may be caused by the damage of the connection wire that directly corresponds to the position of the screen. To judge these phenomena, it’s possible to check it by setting the screen to the state of self-check as explained above.
SET-UP CODES [UNIVERSAL REMOTE CONTROLS]
RCA RCR 311W: 1139
RCA RCR 312W: 10761, 10783, 10815, 10817
RCA RCU 300XP 36: 43
RCA RCR N04GR: 10761, 11785
RCA RCR 4383: 10761, 10783, 10815, 10817
RCA RCR 311BN: 10761, 10783, 10815, 10817
AR&T UVERSE: 1113
URC 4140: 0055 0032 0287
URC 2054: 10761,10817,11785,1193
GE: 1019 0165 0116 0167