REPAIRING AND NOT THROWING AWAY

REPAIRING AND NOT THROWING AWAY

Richtige Fernseher haben Röhren!

Richtige Fernseher haben Röhren!

In Brief: On this site you will find pictures and technical information about Service Modes, Circuit Diagrams, Firmware Update procedure, Disassemble procedure, Universal remote control set-up codes, Troubleshooting and more....

If you go into the profession, you will obtain or have access to a variety of tech tips databases HERE IT IS Master Electronics Repair !.

These are an excellent investment where the saying: 'time-is-money' rules. However, to learn, you need to develop a general troubleshooting approach - a logical, methodical, method of narrowing down the problem. A tech tip database might suggest: 'Replace C536' for a particular symptom. This is good advice for a specific problem on one model. However, what you really want to understand is why C536 was the cause and how to pinpoint the culprit in general even if you don't have a service manual or schematic and your tech tip database doesn't have an entry for your sick TV or VCR.

While schematics are nice, you won't always have them or be able to justify the purchase for a one-of repair. Therefore, in many cases, some reverse engineering will be necessary. The time will be well spent since even if you don't see another instance of the same model in your entire lifetime, you will have learned something in the process that can be applied to other equipment problems.
As always, when you get stuck, checking out a tech-tips database may quickly identify your problem and solution.In that case, you can greatly simplify your troubleshooting or at least confirm a diagnosis before ordering parts.

Happy repairing!
Today, the West is headed for the abyss. For the ultimate fate of our disposable society is for that society itself to be disposed of. And this will happen sooner, rather than later.

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..............The bitterness of poor quality is remembered long after the sweetness of todays funny gadgets low price has faded from memory........ . . . . . .....
Don't forget the past, the end of the world is upon us! Pretty soon it will all turn to dust!

©2010, 2011, 2012, 2013, 2014 Frank Sharp - You do not have permission to copy photos and words from this blog, and any content may be never used it for auctions or commercial purposes, however feel free to post anything you see here with a courtesy link back, btw a link to the original post here , is mandatory.
All posts are presented here for informative, historical and educative purposes as applicable within fair use. NOTHING HERE IS FOR SALE !

Saturday, 16 February 2019

MITSUBISHI LT3280D LT-3780D INITIAL SETUP - OPTION MENU SETUP LED BLINKING CODES

MITSUBISHI LT3280D LT-3780D INITIAL SETUP - OPTION MENU SETUP LED Blinking Codes

OPTION MENU SETUP
  1. Disconnect the HD-4001.
  2. Place the remote control on the 'TV' layer.
  3. Select 'Menu" display by pressing "TV-Menu" button Once.
  4. Press the number buttons [2,0,7,0] in sequence to select the "Option Menu".
  5. Press "Adjust Up | Dn" buttons to select "Initialize"
  6. Press "Enter".
==============================
Initialize
Power Restore:                 Off
Component Port:
Direct Key Mode:
Version - GM32: xxxx/xx/x-xx
Version H8S:xxxx/xx/x-xx
==============================
Protection circuit
  • LT-3280D & LT-3780D has two protection circuits and some fuses.  If the protection circuit work, the LED turns to Standby mode.  The protection operation can be confirmed by the blinking of Blue Power LED.  The content can be confirmed by the number of blinking within  one cycle.  
Name
Number of blinks
Fault location
cause
Remark
Short 1
1
Power-sub 1 or panel
Excessive current on the 120V line.
Only LT-3780D


Power-sub 2 or panel
The 24V line on the Power-Sub2 is low.
Only LT-3280D
Short 2
2
Power or Main or Panel [Only 18V or P5V]
The voltage of any of the following output lines is low.

18v

P5V
AMPVCC ‘17V’
4.5V
A3.3V
D3.3V
AD3.3V
D2.5V
A1.8V
Check the fuses on Power Board {F9G2, F9G3, F9G5, F9G8}
FUSES

Part No
Rated value
PCB
Remark

F9A1
6.3A
POWER
AC LINE
F9G2
500mA

S8V line, S8V line for S5V
F9G3
1A

24V line for S8V and S5V
F9G4
500mA

24V line for S8V & S5V
F9G5
1.6A

24V line for AMP VCC.
F9G6
4A

24V line for 18V
F9G7
1A

24V line for P5V
F9G8
500mA

24V line for 4.5V
F910
1A

IC 920 is broken


Posted By: FRANK at 06:17
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