my RCA 55" lcd #55la55rs The problem is that the backlight bulbs keep flashing on and off a couple of times a second, other than the flashing the picture and sound are normal. I have replaced the power supply, as well as the t-con, inverters, main unit, and PC board, and it still does it. what could be causing it, any ideas?
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Re: RCA 55" LCD backlights flash on and off
I suspect one or more of the ccfl lamps are bad in the panel -
Re: RCA 55" LCD backlights flash on and off
My guess would be PFC or primary capacitor on power board.Please do not PM me with questions! Questions via PM will not be answered. Post on the forums instead!
For service manual, schematic, boardview (board view), datasheet, cad - use our search.Comment
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Hello, I'm stuck in troubleshooting…
The flash system works like that : when the (mechanic) flash button is pressed, the flash mecanically pop up, and a circuit buck boost elevate 7v (batt) to 200-300v (?) for charging the big capacitor. And when the photo shoot button is pressed, the capacitor is discharged in the xeon light.
In the D800, there is a first « power board » close to the battery. 2 wires (batt 7v) goes to another little « flash board ». I measured 7v, so ok.
When I press the flash button, it's detected by the system, flash icon appear on LDC display.... -
As the Elitebooks (820, 840 all gens) only show flashing Power LED and flashing CapsLock (continuously) + a very soft "ticking" noise near the DC Jack,
I wonder if re-flashing the BIOS might be of any use here.
As far as I understood, steady flashing either means insufficient power or a CPU/GPU/Motherboard issue. I use the original 65watt power supply.
There are so many threads out there, but most of the solutions involve flashing codes, which I dont have or claim that you MUST use the original power supply, do a hard reset, reseat the RAM, clean the RAM,... -
First of all I looked at the other posts on this model but didn't really see a solution. This is where I am so far. I have replaced the power supply and the mainboard (both used). I'm still having the same problem. The tv standby light comes on, I push the power button, the backlights flash and the tv shuts down. The tv can't be turned off unless I unplug and reconnect the power cord. I have tested the backlight strips with an LED tester and all of them are working fine. I can unplug the led connector from the power supply and the tv turns off and on like it should. Also with it unplugged, and...
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Hello I've had somebody bring in one of these charming little cameras to attempt retrieving data from the internal 32GB flash.
Something is damaged inside the cameras lens assembly I can hear it clunking around and it has probably dislodged the sensor, powering up the camera gives a blank screen and the focus motor sounds like it's having a fit.
The camera will not connect to a computer via USB in this state, I have no options no navigation, just power up and focus/zoom motor noises.
I think my best shot is to figure out a way to read the internal flash memory outside... -
HI guys
I got here a Sony 65X950G - I tried to find any repairs guides for this model but not many online
here is the issue
I have Sony and android logo. but then 4 led red flash lights front of the tv
I have 3.3v ref. 12v reg then T con 12v when I press the power on button
but then I get black screen and 4 red flash light at the front LED
but I get 3 led flash on the LED driver board.
I check that few X900F or C YouTube repairs, seems that if you have 4 led red flash it could be due of LED black light error
so I tried...
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