Emerson LC401EM2F

[aaronpass]

Re: Emerson LC401EM2F

do a search and you will find other sets that have the same clicking and start from there.
Or start new topic

Thank You!

[Mark369]

Re: Emerson LC401EM2F

do a search and you will find other sets that have the same clicking and start from there.
Or start new topic

[aaronpass]

Re: Emerson LC401EM2F

Hello Everyone! I just replaced the diode at 1208, as my tv had a blown fuse as well. When I go to power it up all I get is a click sound when I first plug it in, and then another click about 5 second after I unplug it. Does anyone have any suggestions for me to look at? Thanks!

[MtPockets]

Re: Emerson LC401EM2F

Mark did you make an error in your Digikey part number#

should it be this:
http://www.digikey.com/product-detai...ICT-ND/2880396

[MtPockets]

Re: Emerson LC401EM2F

Just came across this thread while having the same issue with a buddies set.

I came across The failed D1208, then I came across this site while searching to see if there were any other related issues to this board.

Time to place my order as well.

Thanks to everyone for their knowledge and posting information.

[Mark369]

Re: Emerson LC401EM2F

Good to Job.

[budm]

Re: Emerson LC401EM2F

Thanks for another great repair job, glad that it is working again with a couple dollars worth of part.

[MC_Collector]

Re: Emerson LC401EM2F

I just got the new zener diode in from digikey today. You guys nailed it. The TV seems to work perfectly now. I wanted to let you know that I am thankful for the help!

Best wishes,
Dusty Evans

[MC_Collector]

Re: Emerson LC401EM2F

I had a friend tell me about badcaps and I've been fighting with a Emerson (Funai) LC407EM1 LCD TV which uses the identical power supply as the on you guys have been troubleshooting. We got a power surge that damaged it and it was blowing fuses. I had gone through the same sort of process as above, but set it aside for a long time after finding nothing bad. Amazingly D1208 was shorted on mine too. I ordered a replacement tonight and hope for the same results. What a great site!!

[BFraley]

Re: Emerson LC401EM2F

Posted in Error

[budm]

Re: Emerson LC401EM2F

I do not believe it has Extreme Voltage shutdown function, that is the function that you should have.
Google "power strip with EXTREME VOLTAGE SHUTDOWN"

[Mark369]

Re: Emerson LC401EM2F

do you mean like a power bar with a surge protector built in.

I hope this thread will help some one eles.

[budm]

Re: Emerson LC401EM2F

Thanks for posting the repair feedback. You should look for power conditioning outlet that has Extreme voltage shutdown function. And check the breaker panel if it is running hot, you can also find out if it has loose connection by using Transistor AM radio tuned it to unused frequency then move it around the panel and listen for loud static noise if it has poor connections. I check my panel once a year, you will have to turn off the main feeding switches that feed the panel first. I also switch the circuit breakers on-off a couple times to keep the contact clean.

[Mark369]

Re: Emerson LC401EM2F

Oh yea my father said the the power for his house was flickering on and off about 6 times before the tv stoped working.

Is there any way of marking the thred as solved?

[Mark369]

Re: Emerson LC401EM2F

I got the zener today, installed it with the lamp still hooked up.
the light came on blinked like 3 times and went out front led came on.

So I repaced fuse and pressed the power button. I looked at the screen and there it was the on screed desplay.

budm and tom66 with out your help it would have taken me a long time to find that short. Thank you, you guys Rock.

[Mark369]

Re: Emerson LC401EM2F

I'm going to be getting this part z4ke200a-e3/45gict-nd from didi-key for half the shipping.It looks like a good match. What do you guys think.

[Mark369]

Re: Emerson LC401EM2F

still waiting for zener to come in mail. I will post back when i put it in. maybe 1.5 weeks?

[budm]

Re: Emerson LC401EM2F

Check the VCC pin and the Ground pin to see if the MOSFET inside shorted out due to too much B+ feeding the IC with the missing Zener.

[Mark369]

Re: Emerson LC401EM2F

is there any way i can tell if i damaged ic1201

[budm]

Re: Emerson LC401EM2F

Yes, that 200V Zener is there to make sure the B+ feeding the IC will not go over 200V for the 5V always on power supply IC1201 circuits.