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TVs

Problem with tv samsung ln26a450c1 the screen goes blank

Televisor Samsung LN26A450

Televisor Samsung LN26A450

romb
romb
29
hace 6 años
hace 6 años
Good afternoon I have a problem with a samsung tv model LN26A450C1 the screen and the screen is blank please any solution would be very helpful, thanks BLESSINGS thanks ..
leasmacruz
leasmacruz
1.594
hace 6 años

Checking the flex communication from the main to the tcom if it is well check that the tcom is properly fed

Responder
romb
romb
29
hace 6 años

the output voltages of the source are fine the flex too but I don't have the diagram to see the voltages from the main to the tcom

Responder
leasmacruz
leasmacruz
1.594
hace 6 años

check the tcon have food friend

Responder
romb
romb
29
hace 6 años

these are the voltages from the main to the tcom
1.5v
2.5v
3. 5v
4. 5v
5. 5v
6. 0
7. 0
8. 0
9.
10. 0
11. 0
12. 0
13. 1.2v
14. 1.3v
15. 0
16. 1.3v
17. 1.2v
18. 0
19. 1.2v
20. 1.3v
21. 0
22. 1.2v
23. 1.3v
24. 0
25. 1.2v
26. 1.3v
27. 0
28. 0
29. 0
30. 0
In my opinion, if you have the voltages, that's why I need the diagram to see if they are okay, but I can't.
what else could be the tcom card or the matrix card of the display?

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leasmacruz
leasmacruz
1.594
hace 6 años

there was a fuse with the fuse next to the connector that comes from the main and please measure what voltage is in this

Responder
romb
romb
29
hace 6 años

the t-com has no fuses I will send an image

Responder
leasmacruz
leasmacruz
1.594
hace 6 años

if you have a friend, all the tcon have a smd type fuse, locate a resistance similar to the connector near the serigraphy F1 OR TALVER RF1 ORY ON THE LABEL OF THIS SAY 0 OR A NUMBER AND A LETTER TO EXAMPLE 5A

Responder
romb
romb
29
hace 6 años

sorry if you have it and it measures 5v the t-con is 5v

Responder
romb
romb
29
hace 6 años

It is not open

Responder
leasmacruz
leasmacruz
1.594
hace 6 años

TOUCH TO THE SUBFUENTS

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leasmacruz
leasmacruz
1.594
hace 6 años

had the point as vgl and measured -6volts

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leasmacruz
leasmacruz
1.594
hace 6 años

I also notice a pin marked with v33.
VDA must measure 16volts

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romb
romb
29
hace 6 años

I have already measured the two regulators of 2.5 and 3.3 and they are fine, the input to the regulators is 5v

Responder
romb
romb
29
hace 6 años

The t.com is 5v according to what I have investigated in addition the source does not send 16v only sends 13v 5.3v and 12v.

Responder
leasmacruz
leasmacruz
1.594
hace 6 años

Doesn't send 16 at the source is that voltage marked?

Responder
romb
romb
29
hace 6 años

that voltage of 16v is not marked on the source

Responder
leasmacruz
leasmacruz
1.594
hace 6 años

qa voltages ahy marked at the source

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leasmacruz
leasmacruz
1.594
hace 6 años
hace 6 años
check these voltages
romb
romb
29
hace 6 años

in VDL there are 0.4vy in VGHP and there is no 26v in VGH giving me a very low voltage over zero.

Responder
romb
romb
29
hace 6 años

VDA AND VREF 5v

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leasmacruz
leasmacruz
1.594
hace 6 años

detail me everything I check that voltages are

Responder
romb
romb
29
hace 6 años

Do you put -6 give me 0.4 on the sign of? meda 5v in 3.3 are 3.3 in v5v are 5v where he put 26v gives me a voltage of 0.3 or so sometimes it doesn't give me anything

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leasmacruz
leasmacruz
1.594
hace 6 años

Disconnect the flex that joins the panel with the tcon and measure again

Responder
romb
romb
29
hace 6 años

I send image of the voltages that he told me to measure with the tcon disconnected from the panel apparently they are fine

Responder
leasmacruz
leasmacruz
1.594
hace 6 años

If they appear wrong your panel carefully check the flexes that are stuck on the screen

Responder
romb
romb
29
hace 6 años

I already checked them and I put pressure on them as I have seen in videos and the image returns well but in this panel it is still the same does not return the image, I think I take the panel damaged, I do not think you think

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leasmacruz
leasmacruz
1.594
hace 6 años

Check the flex of the coff chip as I comment all the voltages appear when disconnecting the display is that there is this problem can help in what they sound specifically friend

Responder
romb
romb
29
hace 6 años

Anyway I have to change the entire display so one of the flex chip cof is damaged because I see it impossible to find a replacement for only the damaged flex here in Colombia.

Responder
romb
romb
29
hace 6 años
hace 6 años
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