Hello.the great tevz TV, I have 29 inch LG CRT TV(CN-29H3) which won't display any screen But It surely lit its led lamp ,whenever I plugin ac cable. It is written "MC-7CA(MAIN) 6870VM0056C(6) 980424 L.W.G(0)" and "MC-7CA(CPT) 6870VS0167A(1) 971014 K.J.B(0)" on the surface of its PCB. I plug in this 29inch CRT TV,and switched on ,then I measured pin#9 of STR-S6707 by placing red probe of analog meter to pin#9 and placing black probe to negative termainal of C808 the biggest capacitor(400v 470uf) and It was measured 6.4-6.6Vdc. But In the datasheet of STR-S6707,It says that its On-State Voltage is 7.6Vdc.So I think that there would be a defective component which is undoubtedly adjacent to pin#9 of STR-S6707. And In the same way,I measured cathode of ZD808 zener diode and Q800(C3852A)base,It was measured 7.1Vdc. I also measured positive terminal of C805 and cathode of D807 and Q800(C3852A)collector,It was measured 10.8Vdc. i found The big capacitor(160v 100uf) on the cold side,I think that it is the B+ filter capacitor,So I measured it and It was measured 39-40Vdc. I desoldered all of electrolytic capacitor which is nearby STR-S6707 and measured its capacitance and ESR value But It seems that all of electrolytic capacitor seem to be Okay.and I also measured most of carbon resistor and diode which is nearby STR-S6707,But It seems that all of resistor and diode seems to be Okay.. Is there no way to find any clue for repairing this CRT TV?
hey tevz good day ..u are my teacher could you please explain how do i find the B+ voltage in these crt tv?? where do i probe an image would be nice if u could highlight it in a picture ...thank u
bossing hingi sana ako ng tulong. may devant led tv po ako. stambay lng po sya. pag on ko sya mag palit ilaw nmn sya na kulay blue tapus bigla nmn balik sa red. kng baga nka auto shot off sya. ano po ba kadalasan sira nito. salamat po ng marami.
2:00 quiero hacerle una observación: He notado que casi nunca limpia usted los equipos que está usted reparando, la verdad me apena decirlo pero eso no es muy agradable para trabajar así pues a veces se encuentra un daño oculto en las pistas sucias y/o cables llenos de telas de arañas, espero no se ofenda y me gustaría saber porqué razón no limpia si es por falta de tiempo o porque cobra muy poco dinero por el trabajo, o porque no valen la pena los aparatos que está reparando?, me gustaría saber la razón, saludos desde México.
Don't skip adds please thank you ❤
At 10:20, Very interesting what happened to the diode - a matter of poor contact. I learned something new.
Thank you very much khalid from Morocco
Hi dear tevz.
A beatiful repairing by step by step methode!
You always remember me 20 years ago when I was young and repair crt TVs evry day!
Teacher good help full video 110 ,%great crt repering
Nice sir.iam also repair this type of falt crt tv.thank you sir.
good technician great work bro
Did a good job. I have one in front of me and i dont know how to read things like you did.
Good workmanship.
Can you please show as how to connect 5 wire power module to failed TV Power supply.
many thanks ! i hv got similar issue and try to solve as I hv learned by you soon .
Thanks sir nice works
Very nice sir thanks
Thanks a lot for the video
Holding multimeter probes just reminding me of the chopsticks,being used everyday you might have good grip.
Bro good work
Thanks 🔥
thanks 👍👍👍
Welcome 👍
@@tevzTVTevatronics how can I contact you sir
Thank you 👍
👌👍
Tank you
Ahh a real tv...
hi why crt tv red colour missing simetimes
Cold solder joint in the RGB board
Good boy
Hello.the great tevz TV, I have 29 inch LG CRT TV(CN-29H3) which won't display any screen But It surely lit its led lamp ,whenever I plugin ac cable.
It is written "MC-7CA(MAIN) 6870VM0056C(6) 980424 L.W.G(0)" and
"MC-7CA(CPT) 6870VS0167A(1) 971014 K.J.B(0)" on the surface of its PCB.
I plug in this 29inch CRT TV,and switched on ,then I measured pin#9 of STR-S6707 by placing red probe of analog meter to pin#9 and placing black probe to negative termainal of C808 the biggest capacitor(400v 470uf) and It was measured 6.4-6.6Vdc.
But In the datasheet of STR-S6707,It says that its On-State Voltage is 7.6Vdc.So I think that there would be a defective component which is undoubtedly adjacent to pin#9 of STR-S6707.
And In the same way,I measured cathode of ZD808 zener diode and Q800(C3852A)base,It was measured 7.1Vdc.
I also measured positive terminal of C805 and cathode of D807 and Q800(C3852A)collector,It was measured 10.8Vdc.
i found The big capacitor(160v 100uf) on the cold side,I think that it is the B+ filter capacitor,So I measured it and It was measured 39-40Vdc.
I desoldered all of electrolytic capacitor which is nearby STR-S6707 and measured its capacitance and ESR value But It seems that all of electrolytic capacitor seem to be Okay.and I also measured most of carbon resistor and diode which is nearby STR-S6707,But It seems that all of resistor and diode seems to be Okay..
Is there no way to find any clue for repairing this CRT TV?
👍
hey tevz good day ..u are my teacher could you please explain how do i find the B+ voltage in these crt tv?? where do i probe an image would be nice if u could highlight it in a picture ...thank u
There Eating her with chopsticks lol.
Dear tevz I forgot to ask you that are you from Andizina?
I'm from Philipines
Crt display blue color but no picture
Please tell me you cleaned it before closing it!
A little bit
Hi sir, for a beginner what are the most important tools needed in order to start electronic repair work?
Thanks in advance
multimeter, soldering iron, screw driver.
@tevzTVTevatronics ok thank you
sir in my dell moniter after on display gone slowly plz help ❤
bossing hingi sana ako ng tulong. may devant led tv po ako. stambay lng po sya. pag on ko sya mag palit ilaw nmn sya na kulay blue tapus bigla nmn balik sa red. kng baga nka auto shot off sya. ano po ba kadalasan sira nito. salamat po ng marami.
Marami kasi dahilan yan, baka power supply, backlight, software or motherboard.
2:00 quiero hacerle una observación:
He notado que casi nunca limpia usted los equipos que está usted reparando, la verdad me apena decirlo pero eso no es muy agradable para trabajar así pues a veces se encuentra un daño oculto en las pistas sucias y/o cables llenos de telas de arañas, espero no se ofenda y me gustaría saber porqué razón no limpia si es por falta de tiempo o porque cobra muy poco dinero por el trabajo, o porque no valen la pena los aparatos que está reparando?, me gustaría saber la razón, saludos desde México.
I clean it afterwards.
Muy bien, muchas gracias, es usted un excelente Técnico, me gusta mucho su canal y sus videos, saludos.@@tevzTVTevatronics