Chinese tv chassis HY0509H-5 does not turn on
Colleague if you say that you found sulfatafo in the part of the chupa I invite you to check the soker of the base of the kinescope tube verify that the approximate 140 v are in each cathode of the colors also the voltage of 9 or 12 volts that feed the filaments . Review and rate
Well following with repair the voltages that I have is 112v both in the colors another is that it has to activate the TV see other voltages through the line of 180v there are only 112v but when turning on safe they appear the integrated 180 lps are new and replace them but there is no ignition just in stabay greetings
friend. I already check if there is 5volt. on pin 8 of the eprom if there is no volt. disconnect that pin aber if 5volt comes out. or try another eprom that is the same number as the one with the tv. and if it is possible already recorded with the data of the micro jungle
Still the same with another eprom well I have a suspicion with the flay last time I rebi a Chinese tv and so I was just stabay change the flay and everything solved
friend. Do not miss anything and do not mention if you tried the ic. audio and vert.
You know how many minutes in stanbay the tv was on fire but there are no channels alone some Chinese letters appear for the eprom that changes it
friend. there you have the solution change the eprom for a new one that is the same nut and recorded with the data of the micro jungle but first solve all the cold welds that you see on the plate this just in case and put the eprom that you removed again if it does not turn on change it as I indicated
Of course I understand but he told you the first day that the TV in Stabay came to my hands turned on at half an hour and tpdavia I watched a movie after I attached it it took like two minutes normal fire but the next day I already turned it on again and now it turned on again as it takes to load to boot
friend. It is because of the memory that is failed if you want to try a new blank not recorded
The memory is back and the TV is on again, that is, when it heats up, it is no longer difficult to turn on, it only has a defect and that is how it comes when it turns on, it appears with a channel as blurred or it is dark but when moving the channel srlectors it already clarifies but of I'll look for an eprom memory anyway
I will continue resolving also they recommended me to change some filters but at the moment the TV is working fine but surely later or tomorrow it does not turn on lol right now estpy watching a novel just keep waiting I will replace some condensers of the output of the choper I have only changed the + B
Hello friends continuing with the repair of this tv found some problems at the time of the delay there is no volatility in the micro pin 19 his datashet says that it is 9v and so marks the printed plate and probe with another blank memory but nothing turns on and exceeding that voltage comes out of a transistor V517..c2655 that through the emitter must come out 9 v to feed the microphone only appear 3v and overflow the transient and more in that line but nothing also isolates the emitting pin to see if the volage and they are only there are 3v and that is the reason that the TV does not start I hope a tip if they help
friend. Do the test by disconnecting the microphone to see if the volt. appear --- and place the recorded eprom not blank
I already did it but the voltage does not appear when a small bridge with a diode is sending it sending voltage to the 9v line there the oscillation is heard and the filaments shine but there is no good screen overflowing all the components found some capacitors with the pins oxidized and also resistors close to the micro and I found a condenser desoldado a pin hopefully with the changes I'm making I managed to turn on the TV
I already rebise everything that they indicate to me but there is no horizontal and vertical improvement they are new
friend. You already did the test by desoldering the ic. vertical and ic. of audio to open which of the two ic. It's blocking the power of TV. if you have not done it, do one first and the other later
Hello colleagues thank you for your help continuing with the repair and change for new the ics of the tv today connect it to the network while the tv was in stamped and the voltages are present 112v + b, 5v on pin 8 of the eeprom and solve all the plate changes the filters of the + b but the fault continues I can not find it while it is thus connected to the network in an hour makes a shriek and turns on the TV at the time it turns on I give volume and those letters get big but nothing is noticeable in the image only when giving volume or the word vol looks great but in a few minutes it normalizes normal
Once turned on if I turn off the TV from there to the moment it turns on but once I leave it for an hour to cool there it is the suffering has an hour connected to the network to turn on I do not know what is happening I already overflowed the filters of the source so much As of departure and departure I already check them with an esr and my digital capacitor victor 6013 hopefully my comment serves and can help me many greetings