Emerson LC401EM2F

[wrd0225]

Re: Emerson LC401EM2F

Remove D606 and retest. I normally use diode test function on the multimeter.

I have same TV. I have to change the input board and I don't know how to connect the ribbon cables. Can someone please explain how?

[wrd0225]

Re: Emerson LC401EM2F

I have a Emersom LC401EM2F. The antenna connection is broken. I need to replace the board that it is attached to. I am new to this kind of soldering. Is there a special way to remove the ribbons, or can I order the board with the ribbons already attached and splice them

[Mario R Morales]

Re: Emerson LC401EM2F

have u check d 1208 if it blows 8 amp fuseit is 1m200z i just toke it out and tv work but trying 2 find 1 let me know

[Mario R Morales]

Re: Emerson LC401EM2F

check diode 1208 on power supply is shorted when blows 8amp fuse

[lilmonk3]

Re: Emerson LC401EM2F

After jacking with trying to track down the back components on this, I ended up getting a new power board.. All is working now.. Never could determine what was causing the fuse to blow..

[lilmonk3]

Re: Emerson LC401EM2F

I messed with it some last night... I tried all diff combos of boards unplugged..There are 2 flat cables that go from the main jack board to the digital HDMI board.. When I unhook those 2 cables, then it does not blow the fuse... But I still get NO life from the TV... I will try to get clearer pictures after the sun comes up and I have better light..

[selldoor]

Re: Emerson LC401EM2F

Pics too fuzzy did you test the cable try it with all the cables unplugged
except the one to the ps.

[lilmonk3]

Re: Emerson LC401EM2F

I am starting to think that the PS and this board both have some issues.. About ready to take the easy road and order the boards..

[lilmonk3]

Re: Emerson LC401EM2F

Hope those are good enough.. I think I had to many beers last night at the BBQ and have the shakes

[selldoor]

Re: Emerson LC401EM2F

Looks like a short on the main board then? Picture s of both sides will be required.

Check the cable is not shorted/damaged. Pins bent touching etc - look at sockets for same.

[tom66]

Re: Emerson LC401EM2F

Does the same diode show as short? When you removed the old diode, out of circuit, did it test shorted?

[lilmonk3]

Re: Emerson LC401EM2F

Also I replaced the earlier bad dioed and its still doing the same thing with blowing the fuse.. But if I unplug the thin white ribbon cable going from PS to main board it does not blow it..

[lilmonk3]

Re: Emerson LC401EM2F

I checked Q1601 and Q1602
Q1601
1-2 00.0
1-3 175.0
2-3 175.02
Q1602
1-2 8.99
1-3 8.99
2-3 00.8

[tom66]

Re: Emerson LC401EM2F

I found an old board and it has some IN5406 BL on it.. No sure what the BL means , but the datasheet on IN5406 is 3a 600v... So I will give it a try.

In that position (if it is rectifying 50/60Hz AC), that diode is perfectly fine.

[lilmonk3]

Re: Emerson LC401EM2F

I found an old board and it has some IN5406 BL on it.. No sure what the BL means , but the datasheet on IN5406 is 3a 600v... So I will give it a try.

[tom66]

Re: Emerson LC401EM2F

In its location, you may be able to use 400V.

[lilmonk3]

Re: Emerson LC401EM2F

Do I have to say with the the 600V or can I go a little lower if I find one on a board that isnt the exact same specs.?

[lilmonk3]

Re: Emerson LC401EM2F

Re SF38,DIODE, ULTRA-FAST, 3A, 600V
Have you no other boards knocking about you could borrow one off?

Is this the nephew with the westinghouse - what happened to that?

Sell.. Yes its the same nephew.. The westinghouse is still here laying on the bench.. With school starting , I have not been able to sit down and mess with it.. Its sitting there for a raining day I started to mess with it the other day, but got frustrated because of all the pulled pads, and I am not smart enough to figure out how to fix em .. I am going to dig around on some old boards today and see what I can come up with..

[selldoor]

Re: Emerson LC401EM2F

Re SF38,DIODE, ULTRA-FAST, 3A, 600V
Have you no other boards knocking about you could borrow one off?

Is this the nephew with the westinghouse - what happened to that?

[budm]

Re: Emerson LC401EM2F

Please check Q1602 as shown in my drawing also, just to be sure it is not damaged.
just label the pin as 1, 2, 3. Then using Ohm mode and report the readings:

1 & 2 =
1 & 3 =
2 & 3 =

The Diode should have at least the same Voltage and current rating.
The Vf must be equal or less.
The Trr must be equal or less