20 Most Recent Sanyo DS27800 27" TV - Page 3 Questions & Answers

repair that one with a line a cross a screen.
firstly open both tvs
on your far right, there is a transformer with a cable going to a tube, near that is small IC, for verticle amplification, change that one togather with one electrolictic capacitors,connected to a IC and a and a cable going to a scan coil.
that is the only problem on tv with a line

hit it a litlle or clean the lense

You have a defective vertical ic LA7841 or bad solder connections on the IC

You have a failure in the vertical deflection circuit. This could be either a bad vertical chip, the power supply that runs the chip or a bad capacitor in that circuit. This is usually a repair best left to a professional. There is a small possibility that it could be bad solder connections. If genlty tapping the unit temporarily solves the issue you can try and resolder the pins on the vertical chip LA7841 is the part number. There is also a resistor 1 ohm 1 watt. If that resistor is open you can assume the IC is bad

Inside the set is a part, usually a thermistor that kicks in the degaussing coil. That is the part that will clear up any stray magnetic field interference. These parts can fail over time. It sound to me like the thermistor has failed and the degaussing process no longer occurs. This is a $10 part and is usually stocked by any TV service shop. Call around and explain that you need this part replaced to get the least expensive service for this set.

Dan

get a degaussing coil. crt magnatized..or worst shadow mask broken loose inside crt.  to ck turn on hit crt with open palm. if colors move bad bad.

the option is usually in the menu or controlled by "display" button on the remote

I do not know your original problem. If you are inputting video by the Scart connector the television will automatically read that input because the Scart has a priority, pin 8 I think, which will be at 12 volts when the video is not in standby. Unplug the scart lead and the TV should revert to Recieved channels. If this is cable connected, ie. not via an aerial, then I have not an answer, try the cable company.

You probably have a high voltage arc in your set. Probably the flyback transformer arcing. Stargazer

Did you try the differnt TV mode buttons? Thats what i do on my tv to change from video.

try to spary sum wd 40 behind it ok see if u can undo sensor 1st thx nick

You could try a small, powerful magnet. You can get a magnet that is on a telescoping pole at some hardware stores - they're used to pick up dropped screws, and things like that. Something like this: http://www2.northerntool.com/product/200314334.htm

That might be strong enough to pull it out. As far as dismantling the connector - it's not really something you can take apart, or at least not something you can put back together afterwards. At best, you could open up the case, remove the connector and solder on a replacement connector. I think your best bet is the magnet pick-up tool.

-Dyllan

Sound like a tuner module. Processor may also be locked up, but I have experianced similiar problems on this set and found a bad tuner. Good Luck
Ed
NC Electronics
Mills, Wyoming

hi there, try to adjust it in the remote control, else you have to open it for check up., some unit have adjustment inside the unit, you may have a very high voltage output, check the power supply section. do some test. ty

Why, it is very easy. Just go to Menu manually (as u already did) and select 'Input'. Th eOptions Video1, Video2 and Tuner will scroll up one by one. Just select Tuner

I not familiar with this model but, If the video select button is below the screen. I would suspect "windex damage"! Cleaning screen by spraying directly on crt causes this is some sets. The button gets corroded or part of this circuit. If this is the case, replace/ inspect/clean around switches.
Protection diode(s),capacitor across switch, faulty switch or bad processor input are other causes.

Check the main filter cap and B+ line.