LG 50PW450 Service Manual - Page 29
Picture broken/Freezing
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Repair Process PDP TV Symptom A. Picture Problem Picture broken/Freezing Making Revision 2010. 11. 16 전자 - 6-2 4/10 ☞A21 Check RF Signal level . By using Digital signal level meter . By using Diagnostics menu on OSD ( Menu→Press red key on R/C →Signal TEST) - Signal strength (Normal : over 50%) - Signal Quality (Normal: over 50%) Normal Signal? Y Check whether other equipments have problem or not. (By connecting RF Cable at other equipment) → DVD Player ,Set-Top-Box, Different maker TV etc N Check RF Cable Connection 1. Reconnection 2. Install Booster Normal Picture? Y N Move No Picture/ Sound Ok Section ■ Menu→Setup →Booster Normal N Picture? Y Close Check S/W Version SVC Bulletin? Y N Booster menu On→Off: Check Off→On: Check S/W Upgrade Normal N Picture? Y Close 4 Normal Picture? Y Close N ☞A6-1, 2 Check Tuner & replace Main B/D Normal Picture? Contact with signal N distributor or broadcaster (Cable or Air) ⓒ LG Electronics. Inc.2010