Here's a general observation of the issue : Immediately when plugged in it tries to power on ( relay clicking ) fails then goes into standby at which point if the power button is swiped will try to power on again , fail and then remain in that state without going back into standby . Visual check of power supply components seems good with the exception of a buzzing sound coming from the general area of VD812 which has SP933 and B2545G printed on it . Backlight flashing momentarily ( intermittent ) along with clicking relay . I repaired a Hitachi with similar issue by replacing the mainboard ... the difference being that the backlights would come and and stay on indefinitely .
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Re: Bought a Proscan 55LC55S240V69
Common problem with this model, check the rectangular blue polyfilm capacitor near the transformer on the psu -
Re: Bought a Proscan 55LC55S240V69
I did visually it looks good , no signs of overheating . The only thing that's abnormal off hat is the buzzing sound coming from a transformer winding , almost inaudible .Comment
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Re: Bought a Proscan 55LC55S240V69
But sticking with your advice does anyone know of a replacement for that capacitor ?Comment
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Re: Bought a Proscan 55LC55S240V69
https://www.badcaps.net/forum/showth...t=17613&page=4
quick glance... see post #62 onward.
or this thread:
https://www.badcaps.net/forum/showthread.php?t=25679
they suggest taking a look at C857Last edited by traderx; 10-24-2013, 10:32 PM.Comment
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Re: Bought a Proscan 55LC55S240V69
I decided to buy a working parts tv with a cracked panel instead of fixing the power supply : LG 55LH400C . If anyone has a direct reference to the panels being the same I'd appreciate it . The Tcon board is the same in both models so I assume the panel is the same . I haven't bought the parts TV yet .Comment
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Re: Bought a Proscan 55LC55S240V69
The PSU will NOT be the same, but you could always just swap the Proscan LCD panel into the LG.
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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Re: Bought a Proscan 55LC55S240V69
If the t-con board is the same there should be no issue. Only concern could be mechanical mounting positions for panel being slightly different.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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Re: Bought a Proscan 55LC55S240V69
Anyone have a power supply near Tampa/Lakeland/Winter Haven/Orlando Fl. I could try in the tv before I buy one ?Comment
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Re: Bought a Proscan 55LC55S240V69
anyone ?Comment
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Re: Bought a Proscan 55LC55S240V69
Update : Replaced the usual capacitor and the set works great . It sat for a year before I pulled the cap out and noticed there was a crack in it .Comment
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I gotten a Carver CM-1090 amplifier from a friend who has kept it in storage for decades. Opened it up, thick layer of dust cumulated everywhere. Vacuumed it semi-cleaned, and blown off as much as possible the remaining dust. This is a 220V version.
On initial powered up with nothing connected - it works with all the lights and button indicator lit up as pressed, etc. I then powered off, connected a CD player into the CD RCA input and powered it on. It seemed to work for a short while and when I turned the volume up and down to see the the VUs works, the power started to clicked off... -
Hi everyone,
I require some help with my TV. The TV standby light blicks on and off with a clicking sound (relay?) from the back. After I opened up the TV, I set about troubleshooting by unplugging the boards to try and isolate the problem. My troubleshooting suggests that the logic board is causing the issue, but it could entirely be the YSUS board which is only activated once the logic board is connected.
I have recorded a video which I thought would be an easier way to explain the problem and show the boards at the same time.
I would like to try and identify... -
Hello guys
Because the unit is old (but only occasionally used) the loudness button causes some noise due to bad contact,
sprays did not work, so i decided to solder the pins that it connects on the pcb at the on (loudness on) position
i did that and it worked fine, i know from the bottom of my heart that the switch connects 2 pins and also d/c other 2 pins
on every position it have (6 pin switch), so i was curious what would happen if i clicked the switch off while the pins are soldered at on (so basiclly on and off at the same time), when i did so the sound is gone, nothing... -
Hi, I'm seeing one 9V relay having temperature 40C on its 9V (primary) side. Does that seem right? I switched 2 relays on that board and the temperature was the same (on the same position), so I'm sure it's not a faulty relay. I measured voltage on that relay and it was 9.5V DC, so that looks good. I don't see any other relay on that board having that kind of temperature and they have 9V on them too.
I thought maybe the transistor that is switching this relay keeps switching on/off, so I also checked for AC and there was almost none: 0.3V using mV range. No steady frequency was shown, but... -
Hi everyone!
I have this board that suddenly stopped supplying power to an output that drives an interchanger cleaner motor.
I checked while the board was in place with all wires attached and there's no AC voltage on the corresponding plug X5
This X5 is driven by fuse F8 (tested OK) which comes from the second orange relay
To make sure there are no charcoaled contacts inside the relay, I got a 24VDC power supply and got it ready to manually power up the coil side of these relays.
I respected the polarity, positive to cathode of protecting diode
So provided all...
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