Re: Open frame lcd monitors 19" - in gaming machine Novomatic
hi hope you can help me i have 3 of the r7x411 board im fixing and monitor show power light on but the tube no lighting up and the screen has noting . ive change all caps on the board with 470uf 25v capacitor and also changed all the caps on the inverter. on the cable going to the inverter board.the cable going to the inverter has 0v on the yellow wire, 11.45v on the brown wire, and 12.4v on all 3 red cables....
elpiko
Member
Last Activity: 04-27-2022, 09:52 AM
Joined: 05-09-2020
Location: victoria
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Trust 40 no backlight
I got a trust 40 inch tv when power no backlight not turning on.but I can see logo if I use a flash light on screen. So I when to check the led strips one by one and all light up fine. Now on my main board just before the led ligh connector the m7 diode is shorting. but when I remove the diode from circuit no short.im suspecting the led driver ic OB3350 any idea? -
Re: phillips 32inch led back light voltage drops
hi so i took the tv apart again but just to note that even if the back light is not working if i use a flash light i can see image on the screen. so i use an led bulb circuit to make an led tester. one of the strips works fine but the other one does not light up.
so i took the small cover off an notice one of the led is burned. since i had no spares led from an old tv i used one of the led from the bulb ive took the circuit from as replacement.
when i test the strip now all led light up but the replacement...Leave a comment:
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Re: supra smart tv stuck on unfortunately android.process.media has stop
I downloaded the correct supra firmware from the site provided [url]https://www.kazmielecom.com/2018/10/...-download.html[/url] . on the board i found the info to which firmware i needed to download
1.extract the Ctvupgrade.bin file to a usb drive after download
2.connected the usb drive to the tv and power it up
3. you will get a blue screen software updating after update is finished the tv will shut down
4. remove usb drive and power up tv again it will take a while to...Leave a comment:
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Re: supra smart tv stuck on unfortunately android.process.media has stop
hi the tv is working again. thanks a lot. it seems that these Chinese tv doesn't come with a recovery mode like other branded tv.Leave a comment:
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Re: ps3 fat overheating problem
i got some gray thermal paste today at a computer store ill try some of these and see if it makes a difference. i will check the facebook page maybe will get some good advice there to sharpen my console repair skills.Leave a comment:
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Re: LG 42LB552v no power red light blink twice then off
ok ill check that tomorrow and revert back on the findingsLeave a comment:
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Re: LG 42LB552v no power red light blink twice then off
i tested the fuse and get continuity so its good also i check the voltage from both side of the fuse and not from chassis.
i dont think its the power supply im suspecting the main board to be faulty. problem is i live very far and shipping is costly and dont have the luxury to order a main board to test i have to make sure before i do as i cannot return it after.Leave a comment:
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Re: supra smart tv stuck on unfortunately android.process.media has stop
ok ill tried that. ive open it up just to confirm it has the same model board .
but i see two file for supra, one supra dubai and the other doesnt have anything how to know which one is it?Leave a comment:
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Re: LG 42LB552v no power red light blink twice then off
yes i know the main board is the green one and the other one is psu and the small one that panel connect to is the tcon.
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supra smart tv stuck on unfortunately android.process.media has stop
hi i have a supra smart tv stuck on unfortunately android.process.media has stop. it shows this as soon as the tv start and only thing you can do is press ok but bring up the same message its completely stuck.
normally some well know brand tv you could go to factory reset by pressing volume down and power on startup do go to recovery mode. but this one can find anything.
anyone knows how to do a hard reset on IT . model is SUPRA SLED43CFHDSM1606.... -
Re: LG 42LB552v no power red light blink twice then off
im gettting almost no voltage on these around 0.8v but the one next to it has 8v the fuse is ok ive tested it. check image...Leave a comment:
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Re: Factory Resets Listing
i have supra snart tv sled43cfhdsm1606 it get to the home screen but display a message unfortunately android.process.media has stop even if you press ok to close the message it come back so you cannot do anything at this point . is there a hot key to press while the tv is booting up to get to a reset screen like most android devices?Leave a comment:
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Re: LG 42LB552v no power red light blink twice then off
there are two sets of pin one says power on this all volatage is ok. the one that says drv on i have not test yet.
as for the opto i was not getting any reading from one of them, also i was reading some forum and a guy got the solution by changing the opto so i tried changing both and now i have backlight but no images...Leave a comment:
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Re: LG 42LB552v no power red light blink twice then off
since the power switch is on the main board i wont be able to turn on the tv with the main board disconnected. but ive tried to power it on without the tcon board and the backlight does not turn on.
ive tested all the voltage on power supply going to the main board all are fine.
the strange thing is that the standby light will flash twice then completely off but the back-light remain on till i turn it off from power button then the standby light will stay solid redLeave a comment:
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Re: LG 42LB552v no power red light blink twice then off
Ok so I've changed two opto in the power supply.
When I connect the tv the backlight comes on but no image and the two blinking of red light remains then goes away. If I keep finger on power for few seconds the backlight turn off and red light stay solid but I hear a rapid clicking sound in the power supply.
If I turn tv on again backlight comes on two flashing red light then goes off and the clicking sound stops.Leave a comment:
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LG 42LB552v no power red light blink twice then off
Hi I have an LG led tv when power on the red light come on then blink twice then turn off. The screen is completely blank no backlight or image shows. I've check the power supply everything seems ok.Last edited by elpiko; 05-25-2020, 02:01 AM. -
ps3 fat overheating problem
hi all i have ps3 fat it power on i get to the menu and even start a game then then fan starts to get louder and louder still is automatically shut down. i tried doing a reflow on the gpu and rsx chip with my smd rework at temp 235 degrees Celsius for ab out 90 second on each chip but getting same problem. i dont know if i would increase time im heating the chip or if i should increase temp but i dont want to burn it.
also i dont have the gray thermal paste im using the white heatsink compound i normally use on transistors i dont know if this is also an issue. -
Re: phillips 32inch led back light voltage drops
hi so i took the tv apart again but just to note that even if the back light is not working if i use a flash light i can see image on the screen. so i use an led bulb circuit to make an led tester. one of the strips works fine but the other one does not light up.
so i took the small cover off an notice one of the led is burned. since i had no spares led from an old tv i used one of the led from the bulb ive took the circuit from as replacement.
when i test the strip now all led light up but the replacement...Leave a comment:
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Re: phillips 32inch led back light voltage drops
so you think the problem is with the leds rather than the power supply? i will try to the the tv apart again to record the leds.Leave a comment:
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