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Hello, I've read on the forum that you have successfully repaired a few kenwood navigation CD players. I have a dnx890hd that works perfect except for the navigation. 9-10 times I get a white screen or the screen just glitches. I've bought the 2020 maps, got the software to run once it worked for about 5 minutes then just freezes or goes white. Any advice you could give me?
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Kenwood dnx890hd navigation white-ish screen problem
Anyone ever repaired a Kenwood navigation double din unit. Have newest software and 2020 map update. Have done a hard reset numerous times. Every once in a while the navigation will work. But more times than not , i just get a white screen and says maps unavailable very dim. Kenwood wants $175 just to look at it....
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Vizio m550sv dead hdmi port
Have a Vizio m550sv that was victim of a power surge. Tv worked but did not display any picture through any HDMI ports. Found HDMI ic chip to be very hot to touch. Replaced the IC and have HDMI 1,2,4 working great but 3 displays no signal. I've reflowed the chip numerous times to no avail. Traced the hdmi port to the chip for shorts all is good. Can the board trace internals be fried and not visibly show it on outside?
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Samsung un75f6300- upper half of screen is dim
Have a 75 in Samsung TV,. Panel is operating, can see picture throughout the display, no lines. Only issue is upper half of screen is not as bright as bottom. LED strips bad or component failure on a board?...Last edited by topfli8979; 01-03-2017, 10:31 AM.
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Sony XBR-55hx950 Pixelation/ghosting bad image
Sony 55" led that has horrible pixelation/ghosting/gray screen throughout. My first though was tcon failure, but all voltages at the tcon are correct. The screen is not constant grey/white it seems to be moving like a wave effect across the screen very slow. Any help appreciated.
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Sharp Aquos Quattron 60 3d TV LC-60LE835U
Picked up a Sharp 60" LED tv with a static vertical line. I know its a panel issue. I went ahead and diassembled down to the panel to look at the tabs. No amount of pressure on any of the tabs will take the green vertical line out. Would it be a more in depth problem with the make up of the panel? Not the normal tab bonding issue...
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48 pin Chip, hot air station soldering, what am I doing wrong?
Hoping someone can give me some advice, i ve been using a hot air station for a few years now, no issues soldering ic's,mosfets,transistors. Im going to be soldering a surface mount 48 pin chip to a main board for a repair. Ive been practicing on faulty boards and cant seem to get the solder to flow to each individual pin without clumping the pins together. Im using low temp solder paste, rosin solder flux, and about 400 degrees F. Each time I attempt this most of the legs get soldered individualy but there is always a few that clump or get a puddle effect, and I have to use the copper to separate...
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Vizio xvt553sv color distorted, pixelation
Picked up a Vizio xvt553sv, freezing on "V" splash screen, I know this is a main board eeprom issue. But before I drop money on the repair. I want to verify its a good panel. Colors have a green/yellow wavy tint to it, and have seen some pixelation on the v. Just does not look normal , is this panel issue?
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Samsung un55c6400 inverted, the dye picture .
Picked up a Samsung un55c6400 with clicking power supply issue. Found main to be faulty. Purchased used board for tv, was supposidly specifically for this tv. Tv works just inverted menu, and washed out tye dye colors. Main board numbers match exact, except the last letter is different. Can I change something in the service menu or find the exact board.
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Re: Vizio e701-a3 tcon or panel?
Unhooking either ribbon cable does not show a picture. I cant get a picture at all now, think i toasted tge tcon. Someone fill me in on "the operation" please...
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Vizio e701-a3 tcon or panel?
I have a Vizio e701-a3 that very seldomly will show a image on the screen. I normally have to unhook panel ribbons and reseat to get anything. When I do see a image its very distorted and almost pixelated even though it's a led. I know this model has known panel issues, what's chances a tcon would fix it.
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Re: Hitach 50s601 screen issue
I have tried reseating the connectors, even tried another complete buffer same effect.
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Hitach 50s601 screen issue
Been working with this plasma for a while now, picked it up would not power up without going into protection. Found the lower sdr board to be faulty. Replaced with know working sdr and tv powers up fine with picture. BUT the lower half of the screen is distorted, seems to have some moving lines running through it. If this was a Lcd I would chalk it up to a bad panel, but being a plasma I'm not so sure. Would faulty y sustain cause this issue?...
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Hitachi 50" Plasma Buffer board question
Im going to attempt to repair this sdr d buffer off a Hitachi Plasma Im working. I have already verified the tv works with the board out of circuit. I am not finding and pin holes in any of the 8 ic's on the board. My question is how to I test which ic is bad? There is only 3 ribbon connections and 8 ics. I would understand there were 4 connections >2 ic's per connection....Last edited by topfli8979; 06-15-2015, 06:08 PM.
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Re: RCA 40LA45RQ Intermitentaly looses backlights
Connecter cn1 is the one losing the required voltage on the main....Last edited by topfli8979; 05-02-2015, 05:22 PM.
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