ohmmy
Senior Member
Last Activity: 12-05-2024, 08:08 PM
Joined: 01-07-2013
Location: MA
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No option for optical audio output on older Samsung LCD LN52A650A1FXZA
Im trying to use a soundbar with it. Plugged in the optical cable on both ends but in settings of the TV the “sound select” option is greyed out and won't let me switch off “main” even if I turn off “TV Speaker” option. Anyone have an idea on why or what I need to do? Thanks...
Last edited by ohmmy; 07-15-2024, 06:55 PM. -
Anyone know what this is for?... -
Oh one other question, when I first replaced heating element this metal ring fell out while I was pulling element out. Not sure where it went or if it's needed? The heating element is wrapped with maybe myler paper or maybe something else? So it's shielded from the outside metal so not sure where this ring went or its purpose...Leave a comment:
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So I was checking continuity from all wires to the air nozzle to rule those out before digging the circuit board out and for fun I tried it again. It started to work! I then realized this power wire from the on/off switch going to wand looked very dull.
i unplugged it and turned it on, sure enough the original fault and 006 reading showed. So I got lucky with this one looks like just oxidation. I crimped the wire for better connection and reinserted.
It’s been working fine since. Hopefully that’s all it was for now. Thanks everyone appreciate the help!Leave a comment:
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So I haven’t hide time to really dig into this troubleshooting but I did just measure a few things visible without needing to remove the circuit board. I noticed D2 measures .139 both ways when testing in diode mode. Appears it or something connected to it may be shorted but it might be connected to the relay and wasn’t sure if that’s a normal reading if so? Before I dig any deeper the board seems like a pain to fully remove so wanted a little feedback. ThanksLeave a comment:
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Thanks I’ll check some stuff. Btw the soldering iron section still works. Not sure if they both work off same mains power or not but maybe it’s a clue?...Leave a comment:
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Thanks. What voltage should I be looking for at the Triac gate?...Leave a comment:
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852D+ Hot Air Station - Temperature doesn’t increase
The dial lets me change the temperature setting but it always stays at 006. I’ve tried replacing the heater element (even though original tested fine) and no difference. Air flow still works fine. Any ideas? -
Re: Looking for couple tips please
Still wondering about this
Also I've been meaning to ask, what are all these solder lines over traces underneath power supplies? Are they a type of shielding? Thanks to anyone in advance!...Leave a comment:
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Re: Looking for couple tips please
Hi guys, curious.. Why do some lcd tvs have master/slave inverters? Does each board drive different ccfls?Leave a comment:
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Re: Apple TV overheating issue
FIXED
Turns out the thermal pad on the A5 processor was all dried up. Had a spare ram one from an Xbox 360 that I cut so was same thickness as Apple one. Seems to be working fine now.
Hope this helps someone if they ever run across it.Leave a comment:
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Re: Apple TV overheating issue
I'm currently at work but this site has a very thorough tear down with detailed pics. It's literally opened by just removing bottom snap on base.
It seems to be hottest on top where the A5 chip is located.
[url]https://www.ifixit.com/Teardown/Apple+TV+3rd+Generation+Teardown/8293[/url]Re: Apple TV overheating issue<br />...t on top whereLeave a comment:
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Apple TV overheating issue
This thing keeps overheating in 5 minutes and throwing the "Apple TV needs to cool down and will turn back on its own" message.
I've opened it up and there's no fan in this version just thermal pads which connect to metal plates that are part of the case and the case gets scorching hot to the touch.
Before it turns off everything works as it should, anyone have any ideas? Could an ic be going bad or something? -
Re: Toshiba Blu-Ray Player - No Power
Does sound like a main board issue. Maybe someone else can be of more helpLeave a comment:
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Re: Acceptable esr limit?
You mean the datasheets for the capacities being tested not the board they're installed to?Leave a comment:
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Acceptable esr limit?
I have an esr meter and I googled an esr chart.
Couple questions:
Is an onboard test accurate?
How much can the esr value be different from the chart before it's considered bad?
Example: 1000uf 25v - chart says .14ohms esr. Tester indicates .25ohms esr in circuit. Is that considered bad enough to replace? -
Re: 50" Vizio Plasma Tv red snow on start up
So now I'm noticing randomly scattered red dots after it's been on for a while but they're not as noticeable as when first turned on and it's cold in the room.
They're mainly in the middle of the screen and most visible in blacksLeave a comment:
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Re: 50" Vizio Plasma Tv red snow on start up
Ok nice to know. Yeah it happens especially when the room is cold and within a minute or two the screen literally snaps into the proper color.Leave a comment:
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Re: 50" Vizio Plasma Tv red snow on start up
So is this a normal trait for plasmas when tv is first turned on?
Should I check Va and Vs voltages?Leave a comment:
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Re: Confusion about efficiency of different lamps
Here's my confusion, does the ballast drop the mains 120v to 90v OR is just the voltage inside the tube at 90v and 120 still flowing outside from each end of the tube?...Leave a comment:
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