Mulja tv repair portal
Equipment Repairs => PLASMA TV forum => Topic started by: t1412 on January 26, 2019,11:05:09
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Hi fella's, has anyone got service manual for the following tv lg-50PS3000, thanks for your time
shaun
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Chassis PD92A
https://www.electronica-pt.com/esquema/tv/lg-esquemas-tv/lg-42pq6000-chassis-pd92a-29584/
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top man jordon
shaun :051bye:
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Hi Shaun, I have added service manual to quuq service manuals. Bruce
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thanks bruse, will report back what i find and if i fix it, thanks again
shaun
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hi fella's this lg-50ps3000 has sound no picture fault , i do have vs /va voltages, if i warm up control or y sus boards the picture comes on, i have replaced the control board but still the same fault, any info would be great thanks
regards
shaun
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hi fella's this lg-50ps3000 has sound no picture fault , i do have vs /va voltages, if i warm up control or y sus boards the picture comes on, i have replaced the control board but still the same fault, any info would be great thanks
regards
shaun
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Hi Shaun, might pay to check a few components on the Z-Sus. See attachment.
What's the LED on the control board doing?
Don't forget the pattern generator on the control board. Bruce
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Hi bruse, the tv comes on blue led, it does have sound, i have resoldered poor connections on the ysus and z sus, If i warm control board and ysus board up, turn off and on again the the osd appears but as soon i turn the tv off then on again the tv has no picture thanks
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How about cooking the main board - you might be on a bum steer. It wont hurt it and would eliminate one possibility.
See repair guide attached - it's for a different model but same principles apply.
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Hey Shaun,
Does this set have a sub-power board under the main power supply, prominent because its populated by 6 biggish 3300uF 10V electros? If so, check C231 to C235 (all 3300uf 10V) and C205 (1000uF 25V), notorious for causing start-up errors.
Bruce
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hi bruse no, thanks for the other info .
shaun