Re: Eeprom dump thread!
I have a couple of questions I hope someone might answer. Can the eeprom be read and written too while still on the board or does it have to be removed from the board? Also what blank eeprom chip numbers do we need to keep to be able to program them? Thanks so much for any advice....
David
David53
Member
Last Activity: 10-04-2022, 07:15 PM
Joined: 08-06-2013
Location: Iuka, Ms
-
Re: Emerson LC320EM2 No power after Kit Replacement
After much frustration over the repair of these boards I finally took Paulstef advice and replaced R608 with the correct .18 2watt resistor and now all my sets that were dogs have been repaired. The value of this resistor is critical as the resistor I had used to replace it with was 1.8 ohms and did not work. Thanks again for everyones help and especially you Paul for making me see the light.
DavidLeave a comment:
-
Re: Emerson LC401EM2F Flashes "Digital Television" then goes black
Just repaired this set...Was bad inverter board.. Works good now. Hope this helps someone else.
Thanks
DavidLeave a comment:
-
Re: Emerson LC401EM2F Flashes "Digital Television" then goes black
Wondering if anyone ever fixed this problem...I have one in the shop doing the same thing.
Thanks
DavidLeave a comment:
-
Re: Emerson LC320EM2 No power after Kit Replacement
Let us know how this works out for you....ThanksLeave a comment:
-
Re: Emerson LC320EM2 No power after Kit Replacement
I hope someone finds a cure for the problem of not powering on after a kit replacement. I still have 2 of these sets unrepaired. Thanks.Leave a comment:
-
Re: Emerson LC320EM2 No power after Kit Replacement
Be sure to check D610 next to the Mosfet out of circuit. I think it shows shorted in circuit, but I also find it bad many times when tested out of circuit. I like to replace Q601 also as I have seen it cause a lot of problems.Leave a comment:
-
Re: Emerson E320VT power supply problem
Thank you Larrygad7 your help is most appreciated.
DavidLeave a comment:
-
Re: Emerson LC320EM2 No power after Kit Replacement
I always find D640 on the bottom of the circuit board shorted. Then Q600 and Q601 next are an automatic replacement if D640 has shorted. Also several zeners need to be replaced. Most of the power supplies have been repairable, but I still have 2 that are Dogs!
I still have not found the problem with the 2 power supplies that are trying to start with the previous voltages listed. Thanks for any help. Maybe someone will find the cure.
DavidLeave a comment:
-
Re: EMERSON LE320EM3 Power Supply Problems
The Power Supply Board part number is A21F1MPW. Don't have pictures yet.
Thanks
DavidLeave a comment:
-
EMERSON LE320EM3 Power Supply Problems
I just can not seem to get away from defective power supplies in Emerson/Funai branded Tvs. Anyone have a schematic for Emerson LE320EM3 or know the value of Q501 and R501 in the power supply. The board is a A21F1MPW. Thanks very much.
David -
Re: Emerson LC320EM2 No power after Kit Replacement
Back to trying to repair this set. Below is the voltages I get on the Secondary of T600.
Off Transformer pin 14 D640 Cathode 7.3v
Off Transformer pin 10 D649 Anode -20.2v
Off Transformer pin 15 D646 Cathode 9.8v
Off Transformer pin 15 D634 Cathode 10v
Off Transformer pin 13 D642 Anode -3.4v
Off Transformer pin 10 D643 Cathode 3.7v
Off Transformer pin 9 D660 Cathode 14.1v
IC601 Pin 1 6.9v
Ic601 Pin 2 5.7v
Thanks for any help..
DavidLeave a comment:
-
Re: Emerson LE320EM3 power supply problem
Emerson Model number is LE320EM3 Can moderator or someone fix this post to reflect the correct model number I have posted here?? Thanks
DavidLast edited by David53; 03-28-2014, 02:01 PM. Reason: Correcting an incorrect model number post by meLeave a comment:
-
Re: Emerson E320VT power supply problem
I posted the wrong Model No it is an Emerson and the correct model number is LE320EM3. How can I change the thread title to the correct Model? I do have a vizio with the E320VT model number I am working on also. I typed the wrong model number in the header. Sorry.Leave a comment:
-
Emerson E320VT power supply problem
I just can not seem to get away from defective power supplies in Emerson/Funai branded Tvs.
Anyone have a schematic or know the value of Q501 and R501 in the power supply. The board is a A21F1MPW. Thanks very much.
David
-
Re: Capacitor question
The difference in the two capacitors is one is rated at 85 degrees centigrade and the other is 105 degrees. You could use the higher rated cap to replace the 85 degree one, but not the other way around in my opinion.Leave a comment:
-
Re: Emerson LC320EM2 No power after Kit Replacement
Thanks for explaining how it works. I still haven't gotten it to work. What are your thoughts on removing secondary diodes 1 at a time to see if mosfet in primary runs at 165 volts? Just a thought.Leave a comment:
-
Re: Emerson LC320EM2 No power after Kit Replacement
D645 Checks good...also all other diodes on the secondary have also been checked. They are all on the back side of the board.Leave a comment:
-
Re: Emerson LC320EM2 No power after Kit Replacement
Do you think R608 might be the culprit??Leave a comment:
-
Re: Emerson LC320EM2 No power after Kit Replacement
R608 was changed and I replaced it with a 1.8 ohm resistor. I think I have seen different size resistors in different sets. I didn't have a .68 ohm at the time. R608 is ok. I also replaced D640 in the secondary and that was all that was replaced in the secondary. In the primary side..IC601, Q600, Q601, R608 and D610. All other components tested good. Thanks again for your help, I appreciate it so much!!!Leave a comment:
No activity results to display
Leave a comment: