I have a Hisense 55H6570F that gets the the boot loading screen for android and then shuts down. Oddly I hear a crackle on the mainboard as shown in the picture - nothing looks blown. The tv will boot every time, but when it reaches the loading statge of the anroid logo you can hear crackling on the board and it shuts down. What am I looking for (other than buying a new set) ? Inside the square is where I hear the crackling
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This is a varistor, lift and bend it , you'll see a burn hole, desolder it, retest the tv, if it boots properly replace with same params the component -
yes watching better the prints on the body it has no varistor data, and also pcb says Resistor thermal , anyhow must be turned and watchedComment
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reboot at android system never being what you are thinking... eMMC or LED BL.. start with BL. cut the cable of LED - and put in filament normal lamp . check if the set remain on.Comment
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Did you ever get your TV fixed? It's been a few years so you might not even be hanging around anymore.Comment
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Did not fix. The issue with these sets is the memory chip, as explained, has a lifespan. The only way to repair is to program and install a new mem chip. I found this video which explained the process.He repairs the boards for 200$ +, I sent this tv straight to recycling.
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Do not trust blindly videos and opinions, the crackle can say something, if no relays are present it must not produce any suspicious sound, in your photo, remove one leg of the yellow varistor, then re test..Comment
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I have a Hisense H6570G. It had similar symptoms. It would turn on and get to the Android load screen, and sometimes it would get all the way to the start page, but then it would shut off. If I left it off longer before trying again it would stay on a bit longer before shutting down. The behavior led me to suspect an over heating issue, likely a bad capacitor. I opened it up to diagnose the problem and on visual inspection I noticed two capacitors with bulged tops. The location is circled in red below. The other image includes the caps I removed. They are Jianghai JH CD266 series with values 10 μF, 350 V. Itested them with my LCR meter and got in the neighborhood of 6 pF on one. The other was in the nF range. I didn't have replacements in stock so I ordered them. After I get them replaced I will post the results in case any body else has the same problem.
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You could have given it a chance by fixing the PB stage and then let the tv work, i heard in another place of an Android tv that self restored its bad structure after leaving it on for several hours..Comment
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It's now a couple of weeks since I replaced those two caps on my HiSense H6570G and it has been working well. Except many of the shows on it are really dumb. I don't know how to fix a TV so that it doesn't play stupid shows. 😉Comment
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Hey everyone,
Working on a macbook A1706, board number 820-00239-A.
When trying to turn it on you hear the chime, but get no image whatsoever, and after about 10-15 sec it'll turn off (monitoring usb amp meter, it goes back to 15v 0a. I'm using a 45W charger btw, can't find my 85W atm).
As far as I can tell all 3V3 an 5V lines come up, up until S0, and then go back to 0V. G3H stays stable at 13V.
Put it under the thermal cam, only L7030 gets a little hot (35c), but nothing out of the ordinary.
Where do I go from this? I'm... -
Hi. I have a pre-owned Dell Inspiron 15 7567. It worked fine
During the first 3 days of owning it until Dell Update software popped a notification about a latest Bios version 1.15.0 and latest Intel ME Software update of which I updated. It rebooted and firstly, Upgraded Bios from version 1.8.1 to 1.15.0 then it started upgrading Intel ME firmware. After that update, my laptop shuts down without notice (Like thermal shutdown)
I checked Thermal Paste on the processor and the Graphics Chip and it was dry. Replacing thermal paste has not helped me.
Now I've noticed that laptop... -
TV standby light flash once after plug-in AC power. Then silent. No backlight, no LCD image on flash light test, no SPDIF light.
All PSU voltages to main looks good (12v, 20v (label says 18v but is 20), standby voltage) Probing main board shows what appears to be a DCDC converter (MSH6103A can't find datasheet) providing 5v, 3.3v and 1v. 5v present to the standby light power switch board.
These HiSense TVs appears to have lots of firmware corruptions that takes out the main board either through smartTV use or firmware update. Used main board... -
Having this very weird issue.
The owner of this laptop complained about screen being intermittent when opening and closing, and has been using the laptop on a thunderbolt video connection since the screen failed.
I swapped with a working screen from an A2141 waiting for parts.
The Os exhibits this weird behavior where it boots to to 1/3 the status bar, then it makes the boop sound. It's at the log in but for whatever reason the desktop isn't loaded.
The laptop boots fine into recovery mode. I updated from Monterey to Sonoma and the laptop still has... -
Hi
I have this laptop it shuts down immediately after lenovo screen
sometimes hold for a few more seconds
rltk 8111 (NIC) is getting hot tried without it still shuts down by it self
resistance over coils is prity high
i can see battery is not charging as well
can any one advise ?
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