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Search: Posts Made By: lotas
Forum: Troubleshooting TVs and Video Sources 06-22-2022, 12:37 AM
Replies: 1,269
Views: 418,146
Posted By lotas
Re: Eeprom dump thread!

Post your non-working dump here, I'll fix it.
Forum: Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices 06-21-2022, 05:20 AM
Replies: 5
Views: 181
Posted By lotas
Re: NEED DUMP FOR CANON LBP252dw

dump canon lbp 252dw 25c16

Quote from the forum: unfortunately this dump will not work on another same 252dw will fall into error E196-3001 (mismatch with eMMC Board)
Forum: Troubleshooting TVs and Video Sources 06-20-2022, 05:34 AM
Replies: 3
Views: 185
Posted By lotas
Re: PHILIPS 42PFL4606H/58 NO backlights

Checking the health of the PFC node is carried out by measuring the DC voltage on the capacitor of the mains rectifier. In operating mode, it should be about 380V, in standby mode, about 300V.
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 02:28 PM
Replies: 23
Views: 247
Posted By lotas
Re: Sanyo DP55441 - No brightness control

The one on top of the MX25L3206
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 12:59 PM
Replies: 23
Views: 247
Posted By lotas
Re: Sanyo DP55441 - No brightness control

For 16 bucks there is an already programmed flash, you need to find the same or an analogue (the size of the internal memory), they cost a penny.
...
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 12:06 PM
Replies: 23
Views: 247
Posted By lotas
Re: Sanyo DP55441 - No brightness control

Wipe off the paint so that the full marking can be seen.
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 11:51 AM
Replies: 23
Views: 247
Posted By lotas
Re: Sanyo DP55441 - No brightness control

On the other hand, we do not need 25xxx, it is rather responsible for scarlet (matrix settings).
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 11:45 AM
Replies: 23
Views: 247
Posted By lotas
Re: Sanyo DP55441 - No brightness control

Maybe, maybe not. But rather it is not there.
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 11:19 AM
Replies: 23
Views: 247
Posted By lotas
Re: Sanyo DP55441 - No brightness control

Usually, the eeprom or spi flash is marked with a dot or a strip of paint (indicating that the microcircuit has been programmed and tested).
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 11:12 AM
Replies: 23
Views: 247
Posted By lotas
Re: Sanyo DP55441 - No brightness control

You can also look at the back of the board.
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 10:56 AM
Replies: 23
Views: 247
Posted By lotas
Re: Sanyo DP55441 - No brightness control

If you see microcircuits on the board 24Cxx, then this is Eeprom, if there are 25Xxx, then this is Spi flash, but the markings are not visible in the photo, rather these are DC / DC converters in the...
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 09:32 AM
Replies: 23
Views: 247
Posted By lotas
Re: Sanyo DP55441 - No brightness control

If you have a programmer, then you need to unsolder this spi flash (from the photo of your motherboard, I no longer saw other Eeprom and spi flash). Read the contents in your memory and save the...
Forum: Troubleshooting TVs and Video Sources 06-19-2022, 08:31 AM
Replies: 23
Views: 247
Posted By lotas
Re: Sanyo DP55441 - No brightness control

This is usually due to bad memory (Eeprom, Spi Flash).
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 06-19-2022, 03:22 AM
Replies: 15
Views: 421
Posted By lotas
Re: Ch341a programmer problem

Yes, you can use any for 128, MX25L12835FM2I-10G...
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 06-18-2022, 05:25 PM
Replies: 15
Views: 421
Posted By lotas
Re: Ch341a programmer problem

64 Mb bits = 8 Megabyte (Mb).
Forum: Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals 06-18-2022, 12:56 PM
Replies: 15
Views: 421
Posted By lotas
Re: Ch341a programmer problem

To write a 16Mb file, you must have SPI Flash 25x(128) and your flash is only 8Mb wide.
Forum: Troubleshooting Power Supplies and Power Supply Design 06-18-2022, 12:42 PM
Replies: 28
Views: 634
Posted By lotas
Re: Learning with ATX CHIEFTEC 450W PSU

With soldering, everything seems to be fine here, in these places there are metal through sleeves (like rivets).
Forum: General Electronics Technical Discussion 06-17-2022, 06:21 PM
Replies: 2
Views: 111
Posted By lotas
Re: Looking for datasheet

Similar to ATECC508A-SSHDA-T.
Forum: Troubleshooting Computer Displays 06-17-2022, 11:23 AM
Replies: 6
Views: 165
Posted By lotas
Re: HP Z27s, cycling backlight off for half second, on for 5

It should warm up, because this is a Led driver, you rather have poor soldering (ring cracks) and because of this, contact disappears, solder suspicious places well.
Forum: Troubleshooting TVs and Video Sources 06-17-2022, 02:53 AM
Replies: 9
Views: 334
Posted By lotas
Forum: Troubleshooting TVs and Video Sources 06-14-2022, 12:30 PM
Replies: 22
Views: 513
Posted By lotas
Re: LG 43UM6910PUA backlight on, but no picture

Check the resistance at these test points (CLK...) against ground (ground) on a non-working bar, they should not be low and short circuit.
If there is low resistance on any of these lines, then the...
Forum: Troubleshooting Audio Equipment 06-13-2022, 11:14 AM
Replies: 4
Views: 115
Posted By lotas
Re: TC158R , Sony cass deck schematic please

https://elektrotanya.com/sony_fh11_fh15r_sm.pdf/download.html
Forum: Troubleshooting TVs and Video Sources 06-11-2022, 06:07 PM
Replies: 10
Views: 183
Posted By lotas
Re: td system k32dlm7h firmware tv

I meant to write a dump to another (new or removed from some kind of donor) not exactly like your original, but from a different company.
Forum: Troubleshooting TVs and Video Sources 06-11-2022, 04:31 PM
Replies: 10
Views: 183
Posted By lotas
Re: td system k32dlm7h firmware tv

And there is no superfluous one, some kind of 64 spi flash, so as not to touch the original one.
Forum: Troubleshooting TVs and Video Sources 06-11-2022, 04:07 PM
Replies: 10
Views: 183
Posted By lotas
Re: td system k32dlm7h firmware tv

What programmer?
W25Q64 can you just put it out?
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