20 Most Recent Sony KV-27S42 27" TV Questions & Answers

The 2 blinks is an indication of overcurrent. That translates into a short somwhere inside the set. since you can get sound but no picture, that suggests that the problem is in the high voltage section. The most common failure there is the Horizontal Output Transistor. This is a 3 legged part attached to a heatsink close to the flyback transformer (part with large red wire coming out the top). That part should be marked C5438 or something similar. Post the marking here and I'll give you the complete part number.

Dan

Is the picture good or is it dull and dark?
A dull aka weak picture tube will cause low beam current and blank the screen. Last set I had do this I turned up the screen control to make it brighter. Use caution and don't turn it up too high were you see vertical retrace lines in the picture.

There are two methods to reset TVs. The first is simple to do; a Hard Reset. The other is somewhat skilled; is a Factory Reset (System Reset). To make it a hard reset, just unplug the TV from AC mains wall socket, and re-plug it back after 15 minutes or so. If you do this by overnight is better. This procedure will make it a hard reset. If you want to make it a system reset [Factory Reset]; you have to enter its service mode option, and select the factory reset option. If you wish to get some details; check the site linked here. Pull up older posts. http://electronicshelponline.blogspot.com/ Service mode entry, adjust and exit procedure to many popular brand TVs are given. Never forget to exit the service mode, after all adjustments have been done.

Check and replace the T'Con board. If you wish to get more details visit the site linked here. http://electronicshelponline.blogspot.com/

These blinks [flashes] are fault indication (Error Codes). From the number of blinks occur at one time switch ON, you can get an idea about the faulty circuit section inside it. This will make repair easy. These are called blinking codes. Make sure about the exact number of blinking of the standby/power LED, by switching On & OFF the set, for at least two times. Count it carefully. If you wish to get some details, check the site linked here. It has details about blinking codes, and fault locating procedure, to many popular brand TVs and other devices. http://electronicshelponline.blogspot.com/ Blinking codes details to many popular brand TVs are given. Surf the site with patience.

There are particular blinks meaning on sony TV. I can give you the problem from your sony tv if you specify or count how times the LED flashed.

Four blinks = No vertical Deflection (V STOP), Screen goes to a single horizontal line then the video signal muted. Check IC1509, Q1505 (this varies from model to model). If you have no expertise with sets like this, or this does not solve your problem, get a quote from an authorized SONY service centre - before going any further or getting the set fixed. It doesn't matter if the set is a flat panel widescreen or standard CRT model; the symptoms are similar for each and the repair costs for such will be pretty much the same.

These blinks (flashes) are fault indication.By the number of blinks occur at one time switch ON, you can vet an idea about the faulty circuit stage inside the TV.Count the blinks occur at one time switch ON, carefully.Do it once again, and make sure about the number of blinks. If the flashes are continious, non-stop, the main system control IC should be suspected.If you wish to get more details, check the site linked here.It has blinking codes detail to many brand TVs.Pull up older posts.http://electronicshelponline.blogspot.com/

These blinks are fault indication, and known as blinking codes. From the number of blinks occur at one time switch ON; you can get an idea about the faulty circuit stage inside the TV. This will make repair easy. For more information, check the link http://electronicshelponline.blogspot.com/

Check its video output card for any loose solder terminals. This card can be located at the neck of the picture tube, will directly plugged on to it. The is a common fault found to most of the Sony CRT TVs. Re-solder all the suspected loose solder terminals, by applying a little more solder, without making any solder bridge short circuit in between adjacent close solder terminals. In most cases, this must solve the problem. To get some details, http://electronicshelponline.blogspot.com/Pull up older posts.

Four Blinking Lights • On most , it means " Vertical Deflections stopped ".and according to service manual diagnostics.These information is for those who have knowledgeand understanstanding of electronics repair. Level of difficulty: • Hard : for a newbie • Easy: for those who have tools and kniwledgeEstimated Time of Servicing • thirty (30) minutes for a pro • from three ( 3 ) days to week (s) for a newbie• Check on it first, or have someone to help youverify and troubleshoot .thanks for choosing Fixya for assistance.

HelloTry to download the service manual to your model Sony tV. It only have these details.

Can be due to fault in the line output section , possible short in the EHT or there is no horizontal drive.Need to check the +B voltage and also the sync from the IC.

The fuse rating is printed in the main board beside the the fuse terminal, to purchase the fuse it is available in all electronics shop.