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Equipment Repairs => LCD TV forum => Topic started by: astracat on January 05, 2015,16:28:09

Title: haier led
Post by: astracat on January 05, 2015,16:28:09

hi all
does anyone have a diagram for a ley22c600 led tv
have one with moir patterning causeing signal to intermitanly blank out
regards
astracat

Title: Re: haier led
Post by: downunder on January 06, 2015,06:47:21

Hi astracat,

Moir patterning......now there's a term you don't hear much nowadays. There are a myriad of hopeful cures out there, like toggling the Noise Reduction settings on your TV or lowering the output resolution of your cable/sat decoder. My question firstly is : Does the TV use a ChiMei (CMO) display panel? These are reportedly notorious for it.

Lately, I've found that Panels which have a plastic backing i.e no metal to provide shielding, can play havoc with the eeprom data. This may prove to be pure twaddle, but if the plastic backing is the case with your TV, I can furnish you with simple steps to cure it. May involve a visit to Oil Drum Lane though.

Bruce

Title: Re: haier led
Post by: astracat on January 06, 2015,16:27:37

hi tnanx for reply
tv has a chungwa screen with metal backing suspect maybe decoupling on tuner supply but cant work out which
one psu is seperate plug in type ie 12v out but tests ok on diff tv. tv looks similar to a swisstech with dvd in it
ps dvd no problem also moir pattern still there on scart out to another tv

regards
astracat

Title: Re: haier led
Post by: downunder on January 07, 2015,02:45:53

"Moir pattern still there on scart out to another tv" definitely sounds like fault is on main board (which is probably the only board if it uses an external power supply. I haven't been able to track down a service manual, so from here on I'd just be speculating, but it does sound like a decoupler somewheres.

Bruce

Title: Re: haier led
Post by: astracat on January 07, 2015,14:15:46

hiya
thanks guys  will try bridging a few caps to see what happens will let you know if any success
regards
astracat

Title: Re: haier led
Post by: astracat on January 14, 2015,17:33:15

hi all
quick update caps ok
tuner was problem
regards
astracat

Title: Re: haier led
Post by: downunder on January 15, 2015,04:58:23

Hi astracat,

Thank you for the feedback. Tuner eh, well there's a surprise.

Bruce