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29H-FG3RU
(Continued) TROUBLE SHOOTING TABLE
RASTER NO LED LIGHT
LED COLOUR ?
Check F4701. F3700.
GREEN
RED
Power on by R/C. (14V,120 V, 210 V line). Normal Blown out
GREEN Check CRT connector (KY), (H) bias
RED
Normal Abnormal
Does horizontal circuit Replace the Fuse. momentary oscillate?
R,G,B Check the 14V, No of IC 851. line from the
Is the Fuse again blown out? input output 120V and 210V
Yes main PWB side.
20
20-1 20-2
Yes No Does STBY+5V appear at pin 1 P1001 Check the power circuit
main unit ? consisting of IC701, IC702,
protector Check the power T701 and its related parts. No Yes and pin 106 circuit consisting of & 107 (waveform IC701, IC702,
T701 and its the power Check 3V output no.3 & 4) of IC
IC4702, IC4701, related parts. of IC501 at pin 4 horizontal out
2100. check related parts. Also circuit at the front from pin 22 of IC waveform no.7 check the unit consisting of 2100 and its
circuit Q604 D4707 and its and its related related parts. parts.
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