Sharp TV model sj-21s2 with vertical failure
Thank you for answering I had no knowledge that ceramic capacitors acted in the vertical area, I will review and comment
Friend billy58, I changed 3 ceramic capacitors around the vertical ic and I also tested with another source capacitor and I still have the fault, any other suggestions?
Greetings no, I have not yet resolved the fault, the truth of the matter is that I replaced several electrolytic, several ceramic, probe with another integrated audio, check the yoke and I have not had results, the curious thing is that when turning on the TV the image opens full for about 2 seconds which suggests that the vertical stage is working and then closes. If any colleague has another suggestion in advance they will be welcome ...
friend. according to what you indicate or is that you have cold welds on the flayback pins, where the yoke is connected to the plate or false contact of the yoke wires or the diode that is between pin 2 and pin 6 of the ic.vertical it's bad
I told you to review welds and changed the vertical ic again and the screen opens full but now there are lines of lag on a background between greenish and yellowish, will it be a bad electrolytic that communicates with the connectors of the screen card?
friend. Well you did what you indicated now you can check the socket can be sulfated if it is good change the filter of 10uf x250volt
friend. If I tell you what I indicated there is no improvement of the fault, check the line of the abl. coming out of a flayback pin
Ok thank you very much, I think we are close to repair the fault, I will do what you indicate and then comment !!!
Manolo Karval friend. This device is taking me green gray hair hehehe, I correct a fault and another one appears, I replaced the 10 microfarad condenser with 250 volts, without improvements but when changing the socket, the image came out complete but with the absence of red color, solve the transistors drivers of color and the red one appeared, I left it working for half an hour and when reviewing the very dark image was observed, I tried to upload the screem and I clarify only a little, I measured the 180 volts and it is only measuring me 107 volts, media diodes and resistances but everything is okay. What could be happening now?
After adjusting the screem, turn off the TV to check resistors, diodes and capacitors and now I only have audio, it does not turn on the filament of the screen and the voltage of 180 volts is maintained at 107 volts ... AID! hehehe
friend. fixed if any wire that comes out of the plate and goes up to the insert is broken if welding or check if some of the resistors that are there near the flaybak is short that of the heater
I have reviewed just what you say but I do not see anything abnormal, however I will go back to check thoroughly and comment
Good comment; review welds on the connectors to the screen card, the TV turned on, the image was observed well for 1 or 2 minutes, there began to be heard a sound near the flyback and the image flashes as if it wanted to collect horizontally, there is a resistance R491 ( red, red, gold, gold, brown) that goes to the flyback pin marked H heats up a lot like the heatsink where the horizontal and vertical output transistor is mounted, I assume it is the tsh that heats up, measured the resistance and measures 2.5 ohm but I'm not familiar with 5 color resistors
Thank you friend, then the resistance is not altered, as I explained when turning on the full image comes out with all its colors and with good audio but a click starts to sound and the image flashes while that resistance takes temperature and there I turn it off, change the horizontal and the same thing happens. Will the flyback be bad and why is the R of the H pin heated? Should I change the horizontal ceramics? What could be happening now?