Re: Hisense 58R6E3 (Backlights, sounds, no picture)
I finally took my multi-meter to the driver boards this evening. T-con ribbon cables disconnected.
Right side board:
All CAPS have cont to ground on one side.
one (1) resistor (R153) has cont to ground on both sides. = shorted
Left side board is where things seem to get really ugly:
All CAPS have cont to ground on one side.
Resistor R2 and R3 cont to ground on both sides.
R146 cont to ground on one side, 100 ohms across (wonder why my meter did not beep?)
R163 cont to...
cozwurth
Member
Last Activity: 05-21-2023, 05:45 AM
Joined: 04-16-2023
Location: Suffolk Virginia
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Re: Hisense 58R6E3 (Backlights, sounds, no picture)
I was reading in another thread (Hisense 50P6) with a similar problem.
Diah posted the following: (post #6)
disconnect the LVDS from T-CON side and turn on... if the BL come on then follow the test
- keep the LVDS disconnected from T-CON side.. make jumper wire between the power boards 12V line and feed it direct on F1 ( black fuse ) on the T-CON and turn on see how the screen look.
if the first point the BL didn't come on... but u still have the 12V on PWB ... do the point 2 but use...Leave a comment:
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Re: Hisense 58R6E3 (Backlights, sounds, no picture)
I pulled to other covers off of the back this evening. I'm not seeing anything that seems to be shorted out. Only one side of the chips have continuity to ground. At this point I have not pulled the ground tape off of the driver boards to flip them down to look at the other side of the ribbon cables, but I don't see anything that looks unusual from what I can see through them where they attach to the boards.Leave a comment:
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Re: Hisense 58R6E3 (Backlights, sounds, no picture)
Yeah, I tried that this evening. No joy. If I pressed the Q-tip into the screen harder than I thought reasonable I could get a small area of the black spot to lighten, but it was temporary. Very, very temporary. Sometime in the next day or so I'll pull the back side covers and put a meter on the driver board chips and see what I have.
Another quick question... What SHOULD I be seeing on the screen with one of the T-con cables disconnected, assuming that the screen was good?Last edited by cozwurth; 04-20-2023, 08:41 PM.Leave a comment:
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Re: Hisense 58R6E3 (Backlights, sounds, no picture)
Yeah, I'm def not an expert on this stuff... Yes, diodes are supposed to let voltage flow in one direction only. The confusing thing is that I have 0V on the + side, but 12V on the - side. I'm pretty sure I'm just wizzing in the wind with this thing, but I would like to learn something. I can get a T-con board on the big auction site pretty cheap, but if that's not the problem, or if the screen is also completely blitzed then there is not much sense in replacing it.Last edited by cozwurth; 04-19-2023, 06:22 PM.Leave a comment:
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Re: Hisense 58R6E3 (Backlights, sounds, no picture)
LOL, no, not the fuse itself. I meant the T-con board was out, but I can see where you were on that one.
While I had the board out I used the ohm/diode setting on my multimeter and checked out the three diodes in the area of the fuse.
D6 - 509 ohms with the leads touching correctly, infinite in the other direction.
D10 - 128 ohms & infinite
D3 - 235 ohms & infinite
I put the board back in, plugged the TV back in, turned it on and checked for voltage at the fuse. 12.06V...Leave a comment:
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Re: Hisense 58R6E3 (Backlights, sounds, no picture)
Lotas, thank you. That fuse is tiny... And I see now that the thing I was pointing to is labeled as "D6".
nomoresonys, the fuse has good continuity, I checked it before I left for work this morning since it was out. Is there anything else to look at before I put it back in the TV to check for voltage? I should be able to get it back in the TV this evening to do the voltage checks.Leave a comment:
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Re: Hisense 58R6E3 (Backlights, sounds, no picture)
OK, I was finally able to do a bit more checking on this thing. First, I plugged it in and turned it on to check for the 12 VDC signal at what I think is the main fuse. Maybe it's not a fuse... That's the part I'm pointing to with my test lead in the first pic. I saw 12 volts at the - side as labeled on the board, but not across it. The + side has continuity to the ground plane, which I thought was strange. There are several other similar components that behave the same way. I also checked for voltage at the test points at the...Leave a comment:
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Re: Hisense 58R6E3 (Backlights, sounds, no picture)
I wish it was a cleaner that leaked in there... It looked more like some sort of dried soft drink. Dark and sticky. Blech... At any rate, I'll do a bit of research on the tape cut-off method and take a closer look at the panel driver boards. The dark side of the screen had the worst of it....Leave a comment:
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Re: Hisense 58R6E3 (Backlights, sounds, no picture)
I have the same model TV with a very similar sounding problem. After reading though the thread and seeing a request for pics I took a couple of mine.
First pic is an overall of the back with the cover removed. Next are the main board and the T-con board. The pic with the half-lit screen has the T-con cable on the dark side disconnected. The pic with the half lit screen on one side and multi-color streaks on the other side has the first T-con cable reconnected and the other cable disconnected. Screen is black with both connected....Leave a comment:
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Re: New Members - please post your introductions here
Hello! New guy in SE Virginia here. I'm no electronic expert by any stretch of the imagination, but I want to learn. There seems to be a tremendous amount of knowledge here.Leave a comment:
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