Re: Gateway FPD1975W Power Supply (ILPI-021)

After replacing the 47µf capacitors the monitor is still exhibiting the same symptoms. I'm not ready to give up on this. Please advise on how to proceed.

Re: Gateway FPD1975W Power Supply (ILPI-021)

Okay, thank you PlainBill. Also thanks to jetadm123. I will report back once I've completed the final cap replacements.

Re: Gateway FPD1975W Power Supply (ILPI-021)

So this test is assuming that one of the transformers is good and using it as a baseline?

Re: Gateway FPD1975W Power Supply (ILPI-021)

Ah I see, it's 3% difference between the two readings.

My multi-meter doesn't have 1K so I set it to 2K with the following results:

T502 = 618Ω
T501 = 629Ω
Difference = 1.75%

If you would, could you please explain why the [I]difference[/I] in this case matters?

Yes I am going to replace the two 47µf caps with Panasonic FMs.Re: Gateway FPD1975W Power Supply (ILPI-021)

Ah I see, it's 3% difference between the two readings.

My multi-meter

Re: Gateway FPD1975W Power Supply (ILPI-021)

I am a novice so I am unsure of my results.

1. I used my multi-meter set at 200k Ω and with the red test lead touched pin 7 and with the black test lead touched pin 8 of one of the inverter transformers (T501, T502). The readout was 0.6. I repeated this on the second transformer. The readout was also 0.6.

So these results show that the resistance between pin 7 and 8 are 6% which is twice as high as the suggested readout of 3%.

2. I carefully checked the CCFL wiring and could not see any...

Hello,

The backlight turns off after a few seconds. The symptoms are like the following thread:
[url]https://www.badcaps.net/forum/showthread.php?t=13844[/url]

I've replaced all of the caps except the two Su'scon 47µf (red arrow in top pic). I am aware that Su'scon is in the list of bad caps but these two were not in stock at DigiKey at the time. I am going to replace these but I'm hopping that someone here has something to add.

None of the caps that were replaced looked blown. All of the replacements were Panasonic FM.

I have also read...