thank you
may i ask which product did you use?
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Modding, adding usb/c audio pcb to laptop with faulty sound card/chip, Lenovo L340
Hello
After months of trying I gave up my laptops sound card. I plan to solder a sound card on pcb inside my laptops case, probably connecting to usb ports inside. Do anyone has an experience to recommend pcb type audio/sound card suitable installing inside a laptop? Probably should have some type of amplifier for connecting to internal speakers ( [URL="https://www.ebay.co.uk/itm/195726110519"]speakers[/URL] ).
Thank youHello
After months of trying I gave up my laptops sound card. I plan to solder a sound card on pcb inside my laptops case, probably connecting
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Re: Lenovo L340 rebuild bios
Hello Lukosiukas
I have a similar problem. After I launched Bluestacks (an android emulator) it gave an error about hyperthreading and shorttime later i had a bluescreen. then i got into bios and changed some settings (nothing i remember that is excessive, netherless laptop bioses dont have many settings that may brick your device). after i saved settings it went off and did not start, no picture or backlight etc. because i am a mobile software developer and was working on an app i had no time to give it to lenovo shop. i brought the device to...
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Re: Lenovo L340-15IRH Type 81LK Gaming/IdeaPad BIOS Problem
unfortunately there is no reply from him. lets say i dont want to transfer old serial vs info. Should or can I flash new version bios to this machine?
Thanks...
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Lenovo L340-15IRH Type 81LK Gaming/IdeaPad BIOS Problem
Hello,
3 weeks ago when I launched MEMU (android emulator for windows) it complained about virtualization is disabled and gave me bluescreen. I turned off the device and booted to bios from windows advanced startup. I changed a couple and settings and boom! black screen. Not the typical one, no backlight, windows doesnt start (no hdmi output etc), it just bricked. Didn't want to wait for lenovo so i gave it to a local shop. He said bios is corrupt and flashed a new one. After i got the device i found out that my second hdd is not detected. I thought it may be damaged and ordered...
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Re: Sony Bravia KDL-40W5500 - 14 blinks problem
Tried update, formatted FAT32 (was already FAT32, reformatted neverthless), plugged in then turned on TV. After 2 secs flash drive leds blinked a couple of times, then off for 2-3 secs, then blinked couple of times then stopeed. And approximately 4-5 secs TV led started infamous 14 red blinks and turned off....
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Re: Sony Bravia KDL-40W5500 - 14 blinks problem
Hello budm, sorry far late reply, weekend, daughters volleyball sessions, etc.
Our mains is 220VAC, measured mains, it was 224VAC, main CAP was 304V DC when plug connected to supply, 389VDC when TV turned on, till 14 blinks.
Will start to check power board....
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Re: Sony Bravia KDL-40W5500 - 14 blinks problem
Sorry, messed measurements. There is no NC (as intended).
First main capacitor C6501 is around 308V
Then measurements for CN6154 pins (All other boards connected to IP1 power board, measurements of CN6154 from IP1 side) as a attached table.
Inverter error fluctuates around 3.3V, when AC plug connected to grid, again fluctuates around 3.3V when TV is turned on, after TV shuts itself and error red led starts blinking, it statys around 3.3V for 1-2 sec then quickly gets down to 0V and...
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Re: Sony Bravia KDL-40W5500 - 14 blinks problem
Is it normal to have a resistance reading between HV Transformer windings? I got:
EY6621-EY6620 0.5 Ohm and shortcircuit buzzing in short circuit mode
EY6618-EY6619 0.5 Ohm and shortcircuit buzzing in short circuit mode
EY6700-EY6701 30 Ohms no shortcircuit buzz
EY6702-EY6703 30 Ohms no shortcircuit buzz...
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Re: Sony Bravia KDL-40W5500 - 14 blinks problem
Here is the firmware page:
[url]https://www.sony.co.uk/electronics/support/lcd-tvs-legacy-lcd-tv/kdl-40w5500/downloads/Z0000286[/url]
but again, i have no picture. So after i prepare the usb with firmware is it automatic progress? Because i have no option to monitor the update process.Re: Sony Bravia KDL-40W5500 - 14 bli...Z0000286[/url]...
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Re: Sony Bravia KDL-40W5500 - 14 blinks problem
CN6154:
NC: 2V -> 0V
DIMMER 0V -> 0V
BACK LIGHT ON 3,2-3.5V -> 3.5-3.0V
(when i turn on tv and "->" when it turns off and displays 14 blinks)
Also there is NO reading (0V) on CN6700 HV1 and HV2 which connects to inverter. So should i assume problem probably lies in high voltage section?...
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Re: Sony Bravia KDL-40W5500 - 14 blinks problem
There is no picture, is it possible to make a firmware update? I have newest firmware from sony.
This is the one i'm afraid of, because problem happened after electrical grid problem. I hope it is not.
OK, will disassemble IP1 for checking
OK, i will try to upload pictures I took in this reply.
OK, will check connector now, also I assume main filter cap is the biggest one ...
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Sony Bravia KDL-40W5500 - 14 blinks problem
Hello
This is my second post, i will try to be as through as possible.
Problem: After an electrical outage my parents bravia lost all picture and they got the (in)famous 14 blink code. Code indicates T-CON error.
1) I disassembled the TV and inspected IP1 (power board) and T-CON boards visually. Seemed notheing was off.
2) Controlled the fuse on IP1 power board and F1 micro fuse in T-CON, no problem.
3) When I turn on the TV, the panel is pitch black, no backlight. Some relay clicks, T-CON is supplied with 12V from IP1 power board, approximately...
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