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Tube TVs
Tv Samsung Chassis KS9C Protects
184
hace 5 años
hace 5 años
I have this Samsung TV, Model CL21M40Q Chassis KS9C, the image was turned on, and turned off. When I opened it, I could see many cold solders on both the plate, with the TRC tube card, I proceeded and rescured them, and I also changed a capacitor from 470 uf to 25 volts (C306) for being inflated, both of the Vertical IC 100uf at 50 Volts, somewhat inflated (C307 and C308).
Change a capacitor from 100 uf to 160 volts and from 47 uf to 160 volts devalued
Change the two blue 681k 2Kv capacitors, and the TV turned on but with patchwork lines, no sound
9.501
hace 5 años
hace 5 años
hello buddy: measure if 3.3v from pin9 and 8v come out from pin8 of the multiregulator ... measure if the lc201s receives its supply voltages ... pin 64-61-56-54-45- = 3, 3v .... pin 39-14- = 8v ... has OSD or menu on screen ... solve the X-201 that is between pins 58-59-if you have osd try the video option with dvd if it appears Imagine ... greetings!
9.501
hace 5 años
also control the CR404S of 2200 pf x 2000v and the C405s of 223 x 250v if some of these are not open or short ... between the CR404S and the CR405S form a capacitive divider for the synchronization signal hor, q, will the R414 of 15kohm and then to the DZ402 ... of the DZ402 goes to pin34 (S-castle) of lc 201S ... check these components ... ok ..
184
hace 5 años
I changed the CR404S capacitor again, the nearby 5.6 volt DZ402 zener diode, the 15 K ohm resistor next to the zener diode. Then I turned on the TV in Service Mode with the remote control pressing MUTE 1 8 2 power, barely visible, the letters blue, indicating that the screen is very low, with the mute key I gave it several times, until it He turned on the screen, of course I moved the screen on the flyback, then the service menu appeared, and I reset it. The TV restarted, I turned it on and it worked very well.
17.741
hace 5 años
And they changed the color of the letters or the menu?
It has no scrin control when you enter the service mode?
In cold the TV starts you well?
9.501
hace 5 años
Hello colleague Jose: ... I'm glad you. you already have the tv working ... on my side congratulations for the achievement ... until another opportunity .... greetings !!!
17.741
hace 5 años
hace 5 años
Hi. Instead of getting better with everything changed, it got worse. I used to give an image now, not as he says.
Go back Asia and check if you left no tin remains or attached pins.
must measure and comment on chroma voltages at the flyback and each cathode outlet (KR-KB-KG)
ABL VOLTAGE.
and tensions that feed the vertical. With that you will receive better help.
184
hace 5 años
The cathodes are: KR 161 volts KB 161 volts and KG 162 volts Reach 180 volts to the display socket.
ABL 9.33 volts
The TV returned to the initial fault sounds as if it were to turn on but the screen does not turn on.
I have checked the welds several times and I have not got anything bad, no pin attached.
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