Re: samsung LN-S4051D diagnal lines
inlets are tiny, multi meter probes wont fit.
samsung LN-S4051D diagnal lines
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Re: samsung LN-S4051D diagnal lines
But are the conductors still show continuities between each end of the wires?Leave a comment:
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Re: samsung LN-S4051D diagnal lines
http://electronics.stackexchange.com...-or-transistorLeave a comment:
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Re: samsung LN-S4051D diagnal lines
will try my best to figure out how to do it, Thanks budm.Leave a comment:
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Re: samsung LN-S4051D diagnal lines
with only g board hooked up, getting 6.45 on stby, and no other voltages, i think thats normal with just the one board hooked up, now I think I need to jumper my board from stby to p-on, not seeing a ps-on, do I need to leave the jumper connected or is it just touch and release?, Thanks.Leave a comment:
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Re: samsung LN-S4051D diagnal lines
popped in a pr1005, rated at 600, now getting the same .058 both ways in diode, on ohm I get 63.5 and 62.8 in other direction, still trying to wrap my little brain around soldering the cap in parallel on the a board, Thanks.Leave a comment:
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Re: samsung LN-S4051D diagnal lines
I am sure you have some diode in one of the spare boards you have.Leave a comment:
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Re: samsung LN-S4051D diagnal lines
1n4000 series Diode, look up the spec sheet, the 1n4007 has PEAK reverse voltage rating of 1000V (700V RMS).
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Re: samsung LN-S4051D diagnal lines
You can use any rectifier diode with 500~1000V rating in that location.
"I thought all diodes were one way" Yes they are but when they shorted out it will show resistance both way, but that is not the problem with your diode, it is connected in parallel with relay coil that has resistance of around 62 Ohms so it shows up as bad when you check it.Leave a comment:
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Re: samsung LN-S4051D diagnal lines
ok, back at it, just had to add a troll to ignore list, God bless the lonely trolls, with no social skills, not even online, hohoho.Last edited by nomoresonys; 01-02-2015, 12:22 AM.Leave a comment:
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Re: samsung LN-S4051D diagnal lines
sorry you dont have the electronic skills to repair this tv
My advice is to give up and save your moneyLeave a comment:
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Re: samsung LN-S4051D diagnal lines
OK, try soldering another cap in parallel with that cap, anything between 47~100uF 10VDC, the white bar on that cap is POSITIVE so make sure the positive of the added cap goes to that bar side. See if it changes the symptom on the screen.Leave a comment:
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Re: samsung LN-S4051D diagnal lines
So does your main board has this cap on the bottom side?
https://www.badcaps.net/forum/attach...2&d=1420085798Leave a comment:
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Re: samsung LN-S4051D diagnal lines
You can use any rectifier diode with 500~1000V rating in that location.
"I thought all diodes were one way" Yes they are but when they shorted out it will show resistance both way, but that is not the problem with your diode, it is connected in parallel with relay coil that has resistance of around 62 Ohms so it shows up as bad when you check it.Leave a comment:
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Re: samsung LN-S4051D diagnal lines
Well that DS805 (1N4937) is the snubber Diode for the Relay REL801, it is connected in parallel with the relay coil (Omron G5RL 5vdc COIL, about 62 Ohm DCR) that is why it show conduction in both direction, that is why I ask you to take the RESISTANCE reading of the Diode, not in the Diode mode, I get some idea what the resistance is.
When you check semiconductor for shorts, leakage resistance, you use Ohm mode because when semiconductor shorted out it will no longer act as semiconductor.
you can use 1N 4007 in its place. You can verify by check the resistance of the two copper pads where the diode's legs are connected to and see what resistance you get.
BTW, if the power supply is bad it will affect not just the pictures but also other circuits as well.Last edited by nomoresonys; 01-01-2015, 09:13 PM.Leave a comment:
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