No sync signal no picture we can hear the tv - Televison & Video

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lip sync is the combination of the two signal carrier frequencies being out of sync
one signal carries sound and the other the picture and they normally come together correctly but that can be upset by a blip in the power supply, problems in the signal from the station or atmospheric disturbance
try changing channels a few times , try shutting the set down and then restarting it
read the operators manual for any clues in the trouble shooting section
Lastly talk with a repair shop for any advice on how to fix

Just replace the inverter board..that's it.

Tries pushes the power switch on the remote few times,each times push wait like a 1 mins or 2 mins for the tv Tuner signal board to take it effect.This process should get ur tv picture back,because the tv Tuner signal board it is old and having problems,evenually require replacement of a refurbish tv Tuner signal board.Tries websites like Shopjimmy.com,Ebay.com to buy a whole refurbish tv Tuner signal board for the replacement.

Resolders the FBT-(flyback tranformer).Resolders the video board connections sockets holes,that the board connected to the CRT-(tv tube).Plug in the tv,to have power to the tv,take out the tv video board,for exposer of the CRT-(tv tube).Take an electrical wire with a good insalation in it,grounded to the tv steel frame some where.Take the other end of the wire go toward the open high voltage CRT-(tv tube).U will hear a pop sound,than ur tv CRT-(tv tube) is a 100% clean out of contaminations or u will hear a deeing sounds only,mean the tv CRT-(tv tube) it is to old to pop anymore,just let tv deeing sounds going on for like about 20 mins to rejuvenated the old CRT-(tv tube).After this repluging the tv video board for a tv signal and readjust the button on the FBT-(flyback tranformer) that said focus to fix the CRT-(tv tube) focus problems.

You need to convert the component sync signals into a composite sync compatible with SCART. The red, green and blue signals can be connected through as-is.

When viewing on Digital TV:-
Sometimes Audio and Video signal can not be transmitted simultaneously due to additional process time for the video signal compared to that of the audio signal.
Often video signal takes more time than the audio signal to convert from analogue signal to digital signal in the Digital TV.
It may result in mismatch of the picture and sound.
In the TH-G30/40's HD AV Sync menu, you can adjust the audio signal delay for simultaneous AV signal transmission
1. Delay time can be varied in 10msec steps.(0 to 300ms)
2. Delay time is different between TV Brands.
So you need to adjust the delay time for correct lip-sync.
The adjustment is listed in the instruction book page12

This is a normal, input board defective (as switch module inside betwen tv signal and the AV1,2,...) normaly is video chip defective. You need to send tv to repair shop, to check and repair.

Note: Check for tv picture signal, for quality, normally this circuit when defective, changes the quality signal (first some colours level, sync and then totaly defective is a dark picture)

The sync is automatic. There are no knobs to turn. If the picture is rolling, look first to the source connection and make sure your tv has a solid vertical sync connection. If you are using the RF input then the issue could be within your small signal board also known as the SSB. Good luck.

This may be the broadcast, or the service provider's equipment. We have seen this before. Most people are not too sensitive to lip-sync problems unless they are very severe. With digital TV distributions and the many conversions and signal processes along the way it is possible to have many types of delay problems. On my own TV set which is on a digital cable service I see this on a number of stations.


Jerry G.