No sound , no picture, replaced main board , have sound and picture, but picture is somewhat polarized , I think I can fix this in Service menu, but when I select the service menu, when I press enter the service menu disappears, model no, NSLCD26A
If you wish to get some details, check the site linked here. Pull up older posts. Check the site in 'Mosaic' view. It will make search easy. http://electronicshelponline.blogspot.com/ Service mode entry, adjust and exit procedure to many popular brand TVs are given.
SOURCE: No picture, no sound, does light the insignia sign. Why?
In about 90% of the time the power supply is defective if the TV fails to power ON.
I repair these power supplies, if you need further assistance write to [email protected]
SOURCE: sound but not picture - capacitors look okay, hair dryer didn't w
Insignia NS-32LCD has problems. Has sound but no picture. Back light is present as well as green and purple vertical lines. I replaced power supply and PC BOARD 782.32FB18-520A no help. Flashlite test showed nothing. Any suggestions???
I have an insignia TV 32" and I used common code 10463 to program my direct tv remote. hope it works for you.
SOURCE: insignia ns-pdp50 plasma. pop of death, audio but no video
I suspect that your supply has gone bad. You will need to find the service manual for voltage measurements. If you want to get replacement boards many can be found on ebay or you can check www.shopjimmy.com they stock boards for many units and I have had no problems.
SOURCE: I have an insignia NS-LCD37HD that has backlight
Chec to see if you are getting 12vdc at the T-CON board power input pin first.
First, look at the screen in darkened room to see if you can see any slight glow from the screen, if it does, then the problem can be the T-CON (not getting the 12vdc) or the main logic board not feeding the signals to the T-CON board.
if not, next place to check will be the power supply module, make sure it has 24vdc which is required by the backlight inverter to work, the reason for not having 24vdc can be from bad DC filter caps (leaking/bulging top, high ESR) or short circuits in the inverter board which will cause the 24vdc supply to go into shutdown mode, so you may have to disconnect the power cable that feed the inverter board to see if the 24vdc will work without the inverter board hookup, you will need to apply about 3~4 amp of load to the 24vdc to make sure it can handle that. There are fuses on the backlight inverter boards also. So there is some troubleshooting you will have to do to find out the causes of the problem you are having.
If you are going to DIY and have proper tools, electronics knowledge, and know safety precaution then please read on:
Please see my basic troubleshooting guide here:
http://www.fixya.com/support/r5093881-lcd_flat_panel_tv_troubleshooting_guide
Failed TV and Monitors: http://s807.photobucket.com/home/budm/allalbums
http://en.wikipedia.org/wiki/Capacitor_plague
Parts: www.shopjimmy.com
Capacitors kit: http://lcdalternatives.auctivacommerce.com/Default.aspx he can make you a set of caps.
Testimonial: "So far so good! Almost got it figured out. Thanks!"
477 views
Usually answered in minutes!
×