I figured it was the Power Supply card, so I replaced it with another one on ebay. It wasn't, you can hear the power supply humming when powered on. Also tried replacing 5 amp fuse, has no luck. TV doesn't turn on, and has no indicator light. I heard a small pop from the TV, then it powered down and hasn't turn on since. All the capacitors look good, and the TV has been barely used since I bought it in 2011.
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Re: Philips 40" Class LCD 1080p 240Hz HDTV, 40PFL5505D/F7 no power, no indicator ligh
do you have any pics of the board? do you have a dmm? pics will help cause someone here may see something you maybe missed -
Re: Philips 40" Class LCD 1080p 240Hz HDTV, 40PFL5505D/F7 no power, no indicator ligh
DPS-320LP is that your power supply board?Comment
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Re: Philips 40" Class LCD 1080p 240Hz HDTV, 40PFL5505D/F7 no power, no indicator ligh
any pics of your board? do u have a digital multimeter? by no means am i the best at helping but i will try. it is hard to even try and help someone if you don't have a multimeter and pics are really helpful along with a schematic.Comment
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Re: Philips 40" Class LCD 1080p 240Hz HDTV, 40PFL5505D/F7 no power, no indicator ligh
I just repaired a tv with this same issue with same model number. The power supply had no 5 volt output and standby light was off. The Diode D950 on power supply was reading bad on a multi meter I replace with a new diode and now it works great.Comment
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Hi guys, this is general query really
So I have a Hill DX3000 3KW audio amplifier here.
It has a topology/design like a class A/B but all the banks of output transistors (10 transistors in each 'side' of the channel) are NPN.
I was wondering what class this is. It doesn't fit the description of class A.
It also doesn't match class A/B or B amplifiers as all the examples I see have a complimentary output stage desigs (NPN/PNP) and clearly is not G, H or D
I looked for 'class A push pull' but that didn't tell me anything either
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For some time, a "Class 2" HDMI cable (part number BN39-01583B) supplied with a Samsung 4K 60 Hz display sometimes causes the display to overlay a few horizontal lines of flickering pixels of random colours and sometimes drops out, particularly on content requring HDCP.
Since changing the cable to a thicker Class 2 unit, this problem has not occured again - do you know of other marginal "Class 2" HDMI cables supplied with displays?09-06-2023, 08:50 PM -
Greetings
I got an Asus X453SA for repair
Symptom : no display, with charging indicator blinking, with or without battery. Power indicator is steady. When battery plugged in, the current consumption jumps, but the charging indicator is still blinking.
Here is the measured power sequence :
+3VA_EC +3.3V
EC_RST# +3.025V
+5VSUS_ON +3.307V
PWR_SW# +2.982V
3VSUS_ON +3.307V
SUS_PWRGD +3.386V
+1.05VSUS_PWRGD +1.061V
1.8VSUS_EN +1.873V
VSUS_PWRGD +3.383V
PM_PWRBTN# +1.830V
PM_RSMRST#... -
Hi all!
I have a piece of gear with a Power-one SPL130 power supply in it. On the primary side, there is a very tiny (about the size of your thumb nail) RIFA Class Y capacitor, 2.2 nF. I'm not too sure about the condition (whether or not it's cracking) but I do know that it's there.
I'm aggregating information as to how I should remedy this. It hasn't exploded yet, but that's what I'm trying to avoid.
I've never seen a RIFA class Y safety cap self destruct (or at least it hasn't been documented in the past). However, it's not worth the risk to leave it in there.... -
I acquired a free 50” TV. IT is a Sharp LC50LE752E. It does not show a picture and has no backlight, although the indicator light turns blue meaning it has turned on.
When power is plugged in, the indicator light will turn on blue, the backlight stays off and nothing is visible, even with a flashlight. When pressing the touch buttons on the tv nothing happens. When pressing buttons on the remote control the indicator light will blink indicating the IRsignal was received, but nothing happens.
When I hold the force-on-combination it will turn on. It then shows a perfect...
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