Question about Samsung Televison & Video
Posted by Anonymous on
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Posted on Jan 02, 2017
if TV have black screen,increase screen control to see vert amp IC is defective if you see one horizontal line in picture tube screen,and if screen is white with lots of line acrose ,you can find open resister,on picture tube board,or in main board near HV transformer.
Posted on Jan 26, 2008
SOURCE: half screen showing
keep tv off.
it will only get wors
if sumon dosent work on it soon
the problem you are having in the vertical section of the tv
hav a repairman resolider all conection on the vertical IC and check the serounding componets for falts.
PS the repair takes me about 15 min.
Posted on Jan 13, 2009
Wow another Toshiba bites the dust! I am telling you from my expertise on toshiba that these people are having more problems then there worth to fix this your looking at $250 bucks justi n parts alone we not even talking labor. I worked on more TV's then computers now days. I would recommend not even trying to repare this unit. Find a sony and buy it. You be glad you did!
Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/edwy_1a56970cf1ea4620
Posted on May 25, 2009
SOURCE: Samsung LN-R408D - No Picture
My Mom's LNR408D also had sound but no picture. I was able to fix it by soldering in a jumper wire across a blown (1.5A ???) SMD picofuse on the "T-Con" board.
Consider attempting this ONLY if you: 0) Know enough to avoid the potentially fatal High Voltage parts of the power supply board!!!
1) Are a fearless hackazoid 2) know what you're doing with a soldering iron and teensie SMD parts 3) are gonna throw the busted thing out anyway so you have nothing to lose and won't be sad if you screw something up.
4) Know enough to avoid the potentially FATAL High Voltage parts of the power supply board!!!!!
This board is at the top center under a close fitting RF shield. The suspect part was labeled "CP" on the board and marked with "P" on the part. It is visible above the right-center of the connector from the main board. An ohmmeter showed it as open, so I bypassed it with a jumper wire from connector VIN to the hot side of C13. One image shows the suspect part and the jumper in place.
The other shows the TCON board placement top-center (under its RF shield). With care, it seems possible to test the fuse and put the jumper in place without removing the shield. (Obviously don't touch anything else with the VOM leads!)
Thanks to ZORBUS and Steve's TV and Electronics for the idea.
Posted on Sep 22, 2009
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