Mulja tv repair portal

Equipment Repairs => PLASMA TV forum => Topic started by: t1412 on January 26, 2019,11:05:09

Title: lg 50PS3000
Post by: t1412 on January 26, 2019,11:05:09

Hi fella's, has anyone got service manual for the following tv lg-50PS3000, thanks for your time

shaun   

Title: Re: lg 50PS3000
Post by: jordan on January 26, 2019,15:41:47

Chassis PD92A
https://www.electronica-pt.com/esquema/tv/lg-esquemas-tv/lg-42pq6000-chassis-pd92a-29584/

Title: Re: lg 50PS3000
Post by: t1412 on January 26, 2019,17:58:39

top man jordon

shaun :051bye:

Title: Re: lg 50PS3000
Post by: downunder on January 26, 2019,18:51:45

Hi Shaun, I have added service manual to quuq service manuals.                              Bruce

Title: Re: lg 50PS3000
Post by: t1412 on January 27, 2019,04:50:32

thanks bruse, will report back what i find and if i fix it, thanks again
 

shaun

Title: Re: lg 50PS3000
Post by: t1412 on February 08, 2019,17:12:04

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   

Title: Re: lg 50PS3000
Post by: t1412 on February 08, 2019,17:13:10

 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   

Title: Re: lg 50PS3000
Post by: downunder on February 09, 2019,01:58:33

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

Title: Re: lg 50PS3000
Post by: t1412 on February 09, 2019,07:12:09

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

Title: Re: lg 50PS3000
Post by: downunder on February 10, 2019,01:41:52

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.

Title: Re: lg 50PS3000
Post by: downunder on February 10, 2019,22:36:41

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

Title: Re: lg 50PS3000
Post by: t1412 on February 11, 2019,17:32:41

hi bruse no, thanks for the other info .

shaun