Help with HDMI chip identification !

[964758]

Hi ! I've Samsung LE40B530P7WXRU. Doesn't works all HDMI. I want to change HDMI chip. Please help me with HDMI chip identification. Photo I attached. Many thanks in advance !

[diif]

Re: Help with HDMI chip identification !

Possibly IC303. Put the markings on it into a search engine to confirm.

[964758]

Re: Help with HDMI chip identification !

Thanks for reply ! Did you mean IC3003 ?
Please see the picture, that I attached

[964758]

Re: Help with HDMI chip identification !

The WT61P8 is a microcontroller for flat panel display control and power management with 1) Turbo 8052 CPU, 2) 64K bytes flash memory, 3) 1K+256 bytes SRAM, 4) 8 8-bit PWMs, 5) DPMS detector(2 H/V inputs, Support H+V input) , 6) 4 timers and 2 UART Ports, 7) 2 DDC/CI interface, 8) Slave I2C interface, 9) 8 channel 8-bit A/D converter, 10) Real Time Clock, 11) Watch-dog timer, 12) Embedded ISP function, 13) Power down mode, 14) Embedded ICE mode. 15) H/W CEC


http://www.weltrend.com.tw/en-global...tail/66/77/220

[diif]

Re: Help with HDMI chip identification !

I did mean that IC but then I can't see the markings of the whole board.

[tom66]

Re: Help with HDMI chip identification !

The D600x parts near the HDMI connectors are just protection diodes and unlikely to be the fault
If the traces route themselves into the main processor, you have no chance of repairing it because that's probably BGA with custom firmware.

[964758]

Re: Help with HDMI chip identification !

It is SEMS12 with 324 balls.

[dskall]

Re: Help with HDMI chip identification !

Your hdmi ports look different. Have you examined ports for damage?

[964758]

Re: Help with HDMI chip identification !

Yes I examined

[ngth82]

Re: Help with HDMI chip identification !

Can you post a clear picture of the entire main board?
See the top diff pair traces that go from each HDMI connector? They head north, but we need to see the entire board. follow those traces and that's where the HDMI controller is located.

EDIT: Did you pick this TV up, or is this TV yours? What happened to it?

Please post a picture of the entire board. How many HDMI ports do you have? only 2? 3? 4? Do any of the other ports work?

I'm curious because on some TV sets, HDMI 1/2 are passed through a HDMI multiplexer, while HDMI 3, for example, is a direct input to the video processor. If your TV has just an issue with an HDMI mux, then it's easy to just replace the SMT part and get going again.

If the inputs go directly to the video processor and neither ports work, then you'll have a tougher time trying to figure that out.

What have you tried doing so far? If you haven't already:

1. Ohm out the traces between the HDMI connector - check for shorts
2. Ohm out the trace between the HDMi connector, and the protection diodes.
3. Ohm out the protection diodes from one side to the other.
4. Ohm out the trace from the protection diode to the HDMI chip (which isn't shown in your pic).
5. Check the power supplies on the board - find the datasheet for the HDMI chip, and see if hte associated pins have power (measure across the capactors around the device).
6. post a picture of the entire main board so we can get a good idea of the topology.


Do that and report back

Thanks!
-Thomas

[964758]

Re: Help with HDMI chip identification !

Many thanks for the reply ! But I don't have the board at this time. I take the photo from other board, where doesn't work TV tuner.

[mmartell]

Re: Help with HDMI chip identification !

Follow the hdmi traces from the connectors. In your pic they disappear out the top of the pic. They either go to a switching ic or to a microprocessor, in which case the functions are integrated.

[964758]

Re: Help with HDMI chip identification !

Many thanks for reply !

[olegeisler]

Re: Help with HDMI chip identification !

It is a SEMS 12, located under the heatsink. Unless you have proper equipment + skills for BGA rework you are out if luck. The board can be found many places for 35-50USD.

[diif]

Re: Help with HDMI chip identification !

SEMS12 are £3.50+ on Ali, I guess it depends on the OPs tools/skills, worth replacing before buying a mainboard.

[964758]

Re: Help with HDMI chip identification !

worth replacing before buying a mainboard.

Thanks for reply ! I'm agree.