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Re: need signal board
U can get the require parts at
just insert the proper model and select the perfect brand in the link and the required part will be shown with its present rate.u can also order from this link.
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You will have to search for a TV repair shop, and see if they have another 45" Mitsubishi TV of the same model, or close. You may be able to get a replacement screen from salvage. As for the vertical hold, in some cases you may believe the vertical IC is at fault (we will come back to this), may be not. The first suspicion is in the signal board. The signal board is the board with all the RCA jacks and RF connections. Pull this board out and replace Capacitor (location C2V29) this is a 16 volt 22Mf capacitor. Also replace C2P05 which is a 16 volt 100 Mf cap. This will correct your vertical problem. If you can find an ESR meter, I would certainly check all the capacitors in the signal board. You will find several weak capacitors to replace. The two already mentioned are extremely weak or bad. As for the other board (power supply) you may have to resolder the pins on the vertical IC. It will be located on the corner of the board. I do not remember the location. It is mounted on a heat sink, the vertical IC will have a number such as LA78XX. (LA7838, not sure). Resolder the pins on this IC and check the capacitors in and near this IC. I have not received much problems with this power supply. As always, inspect both boards for bad solder grounds and resolder as necessary! Thanks for asking and show all hands of support!
I want you to know I have been where you are on this same TV and what I found is there are three ICs all in close proximity on the SIGNAL BOARD that I recommend strong you try REPLACING all caps on the ICs as follows:
IC2P02--12 volts input and 9 volts output change C1P01 on input 47 mfd/35 volts change C2P03 on output 100mfd/16 volts
IC2P01--11.9 volts on input and 9 volts output change C2P04 on input 47 mfd/50 volts change C2P05 on output 100 mfd/16 volts
IC2P03--4 volts on input pin 5 and 3.2 volts on output 1 and 3.7 volts input on pin 2 and output pin 4 is 3.2 volts. change C2P07 47 mfd/35 volts change C2P09 100 mfd/16 volts
I know this is a bit technical but it is what is wrong with your set. Caps have polarity (positive and negative connections) They all must be unsoldered and new ones soldered back
The Signal Board usually has the tuner on it where the coax connects. The board needs to be removed by unplugging it to change the caps.
You definitely have bad solder grounds. I have repaired a few of these. You will need a TV tech pull the boards out and resolder them. The worst board would be the one on the left [signal board, has rca jacks. rf connector]. And they may as well solder the second board. You will have a restored TV when completed. Thanks for asking and show a few hands of support!
postive 9v regulator on the signal board and possible capacitor right next to it. the regulator is generic 7809. if you test the output it will be 6 or 7v needs to be 9. when the lines go away it is warm and will read 9v. so do the test cold. i'm assuming you know how to use a multimeter. if not then a local repair shop can do this for you.
1. CHECK C218 4.7 UFD 50 V, AND C220 47 UFD 35V ON THE SIGNAL PCB. 2. CAN BE OBSERVED AS DISTORTION ON DC PEDESTAL PORTION OF STAIR STEP PATTERN. SUSPECT C222 OPEN. LOCATED ON PCB-SIGNAL AT IC200 PIN 35. (10UF 35V) 3. SHOWS UP ON COLOR SIGNALS ONLY. OK ON B/W PICTURES. CHECK X600 AT IC200 PIN 13. SHOULD BE 3.58MHZ. LOCATED ON PCB-SIGNAL. PT# 285P02905 4. (COLOR LINES) CHECK C601 47 UFD @ 35V ON THE COLOR CONTROL OFF PIN 36 OF IC200 ON THE SIGNAL PCB. 5. SUSPECT C222 OPEN. LOCATED ON PCB-SIGNAL AT IC200 PIN 35. (10UF 35V) .
REMOVING CRT SOCKET, YOU MAY HAVE CORROSION ON THE PINS OR POOR CONNECTION ON CRT BOARD, AND BY REMOVING IT COULD HAVE CLEANED THE PINS A LITTLE. TRY CLEANING PINS ON CRT AND SOCKET.
GOOD LUCK, big IRISH.
Hi, Any authorized Mitsubishi dealer can order your board for you, If you live in a metro area go to Sears Service dept.(not the stores) and order one there, Mitsubishi is "proprietary parts" so you have to go to an authorized dealer, hope this helps you out, BMW Rider
yes it can the cost is $350 sumwut dollars ,i got my tv for $54 and thats wut was wrong with it ,the board that is connected to your power cord is wut needs to be replaced sears can do the job but the labor is $200