Good afternoon: The fault is this? When changing channels, do you see the OSD changing, for example 2/3/4/5/6/7/8 channels, Etc always showing the same TV signal? If that were the case, that could be the tuner's failure, or the data BUS (DATA, CLOCK). I don't know, check that these tracks are in good condition, check that the tuner reaches the voltages, 33 volts for example ... Etc .
Hi neg2013, thanks for taking the time to respond to my help request. As for your question I tell you: It is not stuck in a channel while changing the numbers in the OSD. If you read my post well you will see that I say that it changes the channels as if it was changing the channel permanently.Pressing a key, either from the remote control or on the TV panel. That is, change the number and the channel. I hope I have made myself understood. Thanks again.
Dj G thanks for your suggestion ..
I think the obvious wn answer is not the button is the line that carries the pulse signal I must reach the jungle this must be constantly at 5 volts or near it is possible that the zener that carries this line that is 9 volts is damaged and grounded the voltage is that a button is pressed, this happened to me in a sony, it killed me 2 days to realize this because the zener marked me good but when changing it bimgo the voltage of the push buttons no longer fell and they no longer changed the canals alone