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My 14 inch crt lg model cp-14j22a turn off by it self

Auto shutdown

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Chassis cp 79b lg tv bord on but go to sut down eht but audio ok chanal ok no vartical volt +14 -14 crt volt 200 Tv is on poition


Check and replace damaged component/s at its horizontal scan output section circuit. Check the LOT (Line Output Transformer) too for damage. Replace the horizontal scan output transistor. Check the input voltage to LOT. If the voltage is absent check the feeder resistor; if any. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
Type in this key phrase " my service table today " in the search box at the top right of the display window, to get gathered some pages which has the details of practical experiences to the author of that site.

Sep 23, 2015 | LG Televison & Video

2 Answers

It will come on then turn it's self off


It is shutdown and to know if I can help or not I need to know the model number.

Dec 17, 2012 | RCA Televison & Video

1 Answer

Solutions to auto shut off lg crt tv 21


check for a defective horizontal output transistor.

Aug 16, 2012 | Sony FD Trinitron WEGA KV-27FS120 27" TV

2 Answers

Lg crt monior display cable wire circuit diagram


Pin Signal 1 Red Video 2 Green Video 3 Blue Video 4 Monitor ID - Bit 2 5 Ground 6 Red Ground 7 Green Ground 8 Blue Ground 9 [KEY] 10 Sync Ground 11 Monitor ID - Bit 1 12 Monitor ID - Bit 0 13 Horizontal Sync 14 Vertical Sync 15 N/C (Reserved)

Feb 11, 2010 | Computers & Internet

1 Answer

My lg 14 inch crt desktop monitor pictue become


The CRT has screen adjustments, there is a screen adjustment button on the monitor that will allow you to adjust the width of the image as well as the height etc.

Jan 21, 2010 | LG Studioworks 775N 17" CRT Monitor

1 Answer

MY TECO 32 INCH LCD TV HAS NO POWER MODEL NO TL3281RT IT SWITCHED ITS SELF OFF AND WONT TURN BACK ON


sometimes if the temperature builds up as a result of being too close to a wall or some refelective heat source the unit will auto shutdown .Also vacuum the air holes on the casing, if these are clogged the prpoblem will also occur. Failing that being the problem there is a fuse inside, but it may be easier and safer to get a callout tech to open an fit this

Aug 12, 2009 | Televison & Video

1 Answer

Mitsubishi 55 inch Digital TV WS-55807


Good Day; This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the input/device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. SELF- DIAGNOSIS INDICATE X-RAY. CHECK FOR A SHORTED IC5A03 PART # 270P704010 AND AN OPEN R5A73 82K ¼ WATT OFF PIN 2 OF IC5A02 ON THE MAIN PCB. 2. SELF DIAGNOSIS ERROR INDICATES SHORT PROTECT. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. 3. SELF-DIAGNOSIS INDICATES SHORT PROTECT. CHECK FOR A SHORTED IC4B01 PART # 270P261020 (VERTICAL OUTPUT) LOADING 24-VOLT SUPPLY LINE. LOCATED ON THE MAIN PCB. Good Luck, big IRISH.

Sep 19, 2008 | Mitsubishi WS-55807 TV

1 Answer

Turns on and turns off.


Good Day;

This model is equipped with a self-diagnosis feature to help with diagnosis of shutdown problems. To activate this turn the unit on let it shutdown then press the device and menu buttons on the front panel simultaneously and hold them in for 5 seconds after 5 seconds the power LED on the front panel will blink a two digit sequence. This will be one set of blinks a short pause then another set of blinks, this will repeat 5 times. 1 - 2 = no error detected 2 - 1 = X-ray protect (high voltage or beam current) 2 - 2 = Short protect (short protect monitors low voltage supplies) 2 - 3 = Deflection protect (this could be loss of vertical or horizontal deflection) 2 - 4 = Vertical protect (usually loss of vertical from the source) 1. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR LEAKY C9A60 470 PF 1000 V PART # 154P400030, PARALLEL TO D9A57 ON THE POWER PCB. 2. SHUTDOWN AT POWER WITH SELF DIAGNOSIS ERROR 2 2. CHECK FOR OPEN FUSES F9A04 AND F9A05 PART # 283P043090 ON THE +24 AND -24 VOLT LINES. IF THE FUSES ARE OPEN THE CONVERGENCE OUTPUT CIRCUIT WOULD BE SUSPECT. OR your TV has "COOLANT" (ethylene glycol) on the circuit boards. This fluid comes from the CRT's (picture tube) this fluid is used to keep the CRT's cool, such the name. This fluid from the CRT's leak when TV is on for long periods of time, the chamber expands and the seals leak.

One can remove this fluid by using "acetone" & small brush. The fluid is hard to see, use bright light, they spots can be smaller then a DIME. Also, the fluid can corrode the parts and traces on the boards. To protect the TV in future place heavy plastic or thick cardboard over affective area, make sure TV has proper air flow around TV. Good Luck, big IRISH.

Sep 05, 2008 | Mitsubishi WS-55511 55" Rear Projection...

1 Answer

GOLDSTAR BRAND TV


pls check power supply output. check the voltage difference in both conditions

Dec 05, 2007 | Televison & Video

2 Answers

65 INCH PROJECTION SCREEN IS SUPER BRIGHT


super bright is due to failure in video section. 1 video supply might be absent. 2 g2 voltage mighi be high gue to some part defective at ground side. 3 chroma or jungle ic not getting supply or defective. 4 luminance section defective. BUT AS you are also saying that it came once after hitting on top so there is also possibility of loose contact also. good luck.

Sep 18, 2007 | Mitsubishi WS-65819 TV

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