Hi
First off, I think this website has very insightful information on it. I am just hoping that someone out there can help me.
Here goes :
I have a 30" LCD TV/PC Monitor. I would tell you the name of it. But it has NO marks on it to tell me who the manufacturer is. I have disassembled ( I have some electronics knowledge and friends that have more) I have looked at the logic board ( tried to Cross reference the P/N to no avail), as well as the Inverter Board (HIU-550), and the Power Supply (RL Power Supply Model # RL9802SC). At any rate, here is my problem:
When you turn the unit on everything works fine for about 5 sec. After which time the backlight goes out, but the audio is still working. If you change the channel the backlight will turn on for 5 sec and then shut off and stay off until u change a channel ( with the audio still going) When this happens ( from the time u turn it on to the time that the backlight goes off) a buzzing can be heard from the power supply. After which time the buzzing stops and the backlight goes off(but there is still 4V going from the logic board to the inverter ( if you unplug that cable the backlight does not turn on at all). Here is my questions. I am not sure if it is the Power Supply that is bad or the Backlight inverter. The power supply I have been told can be rebuilt for about $150 bux and still waiting on a callback about the inverter being rebuilt ( they are saying around $100-$200). Being a college student and on a fixed budget I was wondering if I could get any insight on troubleshooting to determine if it is the Power or backlight board. I am going to imbed pictures into this post to give as much information as possible. I do not have the finances to pay for a rebuild of both pieces and would like to be bale to make a decision on which is to be rebuilt. Here are the pictures of the unit ( maybe someone out there can identify this TV, also ;)
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