Y board this X board that

[Rippa_MD]

are there any pictures or better descriptions of the different type of boards in regards to their function and how they work with one another?

power supply board* == contains the caps, resistors, transformers, the power cable plugs to it...anything else??
-picture goes here


mainboard* == usually were the coax cable, audio, video, hdmi connections are
-picture goes here

t-conn* == goes between the tv (lcd/plasma) panel and the main board
-picture goes here

inverter board* == contain the transformers and ??
-picture goes here

I come to the board and read some of the postings and try to follow but honestly I get lost in the x board and y board jargon.

What is an x board and a y board again?
What does an x board and y board do?
-general picture of each board would be very helpful



*disclaimer: I'm new to this so I could be spewing wrong information and welcome any corrections.

[PlainBill]

Re: Y board this X board that

are there any pictures or better descriptions of the different type of boards in regards to their function and how they work with one another?

power supply board* == contains the caps, resistors, transformers, the power cable plugs to it...anything else??
-picture goes here


mainboard* == usually were the coax cable, audio, video, hdmi connections are
-picture goes here

t-conn* == goes between the tv (lcd/plasma) panel and the main board
-picture goes here

inverter board* == contain the transformers and ??
-picture goes here

I come to the board and read some of the postings and try to follow but honestly I get lost in the x board and y board jargon.

What is an x board and a y board again?
What does an x board and y board do?
-general picture of each board would be very helpful



*disclaimer: I'm new to this so I could be spewing wrong information and welcome any corrections.

You're mixing potatoes and bananas. That's causing a large part of your confusion. X, Y, and Z cards are found on plasma panels. The T-Conn is found on LCD panels.

Think of a flat panel TV as a set of subassemblies. Let's make it very basic.

You have a main board. (This may actually be several boards, depending on the age of the design). It selects the signal from the various inputs, processes it, and feeds it to the display, and the audio sub-system.

On an LCD TV the processed signal goes to the T-conn card (the input to the display), which sends it to the LCD panel.

On a Plasma TV the processed signal goes to the main control card (also the input to the display) which sends it to the Y and Z sustain cards, and either directly or indirectly to the X drivers. The X drivers (buffers) are the horizontal drivers. The Y sustain (Y-sus or ysus) and buffers are the vertical drivers. The Z sustain (Z-sus or zsus) is the intensity.

The power supply of course provides the various voltages everything needs. The inverter should be considered an extension of the power supply.

I like working on Philips TVs. If you can find the service manual they give a lot of information on troubleshooting, as well as so-so pictures of everything. Here is one for a 30" TV Link

And one for a plasma TV Link

If you look through these, you will find the one for the LCD TV doesn't have much information on the Tconn and the inverter, while the one for the plasma TV doesn't have a lot of information on the power supply, the X,Y,and Z cards, or the main control card. That is because these are supplied as part of the panel, and are not considered serviceable parts.

PlainBill

[Rippa_MD]

Re: Y board this X board that

Thank you for clarifying my confusion and for the links!!

[PlainBill]

Re: Y board this X board that

Thank you for clarifying my confusion and for the links!!

The best way to learn this stuff is to have a TV on the bench with the back off, the service manual in hand, then ask Wizard.

The second best way is to go to Scribd and search for things like Panasonic Plasma training manual and see what pops up.

One word of warning. LCD TVs use low voltages except for the inverter output, which is at a fairly low current and usually well covered. On a plasma set you can have voltages as high as 200 volts dc at several amps and they are not shielded.

PlainBill

[NxB]

Re: Y board this X board that

Yes, the voltages are zap-tastic. Also look up LG training manuals on scribd. They were VERY helpful in understanding how these function.

[Wizard]

Re: Y board this X board that

Yes post a pic and I'll call them out.

BTW, LCD's case is T-CON Not T-CONN, stands for timing control and is mounted on the LCD itself.

Similar idea except the plasma panel uses different design using a board called logic board since this is rather complex circuit than LCD itself. This logic board sends timing info to pulse power transistors and data addresses to correct line-address buffers. And do this at high speed on two of buffers (Y-buffers) and Z-buffers and the X board transistor driver is one big combined lines, hence no need for addressing, just right timing of pulses.) vastly complicated.

Both takes similar data via LVDS that is why they sometimes share same mainboard for LCD or Plasma. The only difference is few setting is unique to plamsa is burn control by shifting pixels for the static items like menu etc.

Cheers, Wizard