Question about Orion1934 19" TV

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Power switch failed

In my Orion model TV1333A 13-inch TV, the power switch, which only worked intermittently (i.e., had to push it several times to get it to work) for a long time, has now failed completely. I would like to replace the switch and am contemplating replacing it with a standard toggle switch (which, while ugly, would be more reliable...and, I don't know where to even start looking for an exact replacement). Does anyone have any advise on how I should proceed? Much thanks for your help.

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  • omardiaz Jun 11, 2008

    I have a problem with my orion tv model tv1929a because de resistor number R506 (aprox 20W) blew up and the power switch supply doesnt work and i cant find any schematics or service manual in order to know the value and replace it.

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Well, you have to get the bad switch out and then find another switch that match its specifications. or take it to a repair man and ask him to repair it and change the switch for you. good luck

Posted on Apr 02, 2007

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1 Answer

TV was working fine. Then after it was switched off at mains it doesn't come back on. Have checked wires plus fuse etc... and still no power to TV set. Help!!!!


Is probably a bad relay or a bad capacitor most likely in the power supply.This is a common problem with TVs. You may find that if you let it sit plugged in for several hours that it will turn back on. If that is the case, it is most definitely a capacitor. Repair costs will vary, mostly based on the time it takes to troubleshoot the exact component that has failed, so you will have to determine if it is worth it to have the set repaired.

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Tv will intermittently not turn on. when i press the on/off switch i hear a click then i hear fans start up - the fans will die down to a steady speed. no raster. press on/off a few times then tv video...


Your Caps on the PSB- Power supply board are on their way out. Pretty soon it won't turn on at all. You will only get the Fault code blinking LED at startup. Recap the UF capacitors on the PSB. Works 90% of the time.

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My mums orion TB32 RN10DA gets lines across screen then conks out, after leaving for a while it will go back on, then repeat this at certain intervals. it has been to a tv repair guy who left it switched...


Get some Freeze spray, next time it faults, start spraying components, the one that when sprayed, returns the set to normal, well there is your "Faulty" but, now you must find out WHY that component "Heated Up" did it spontaneously fail? Or is some other component "Take it out", you must then go to the Power Supply, and check all Voltages. You will need a service manual to do that. Intermittent faults are a vane to us Engineers, they are the WORST, fault to sort of have,.. It is always better, if a "Fault" is "Hard On" at least you have a point to work from, but intermittent ones are real hard...I have been doing this for over 30 years and some still stump me, and I am still learning..

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Possibly a bad power supply. I take it it does happen using the power button on the tv?

Sep 03, 2009 | Televison & Video

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Model CS- 40307 40 inch Mitsubishi TV will not turn on


continue to push power button until light turns green. verie rate of push and hold

Jul 15, 2009 | Mitsubishi WS-65819 TV

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Nov 05, 2008 | Televison & Video

1 Answer

Tv won't come on


Hello to all from Tom Arnold, WA6OVP

Subject: Repair of computer monitors or flat panel TV’s.

History:
Recently my wife's 27-inch AKAI (LCT21AS) 27-inch flat panel HDTV with DVD player quit working. Years ago, when I had an analog computer monitor quit operating; Joe Fadden WA6DDF had mentioned to me, that often computer monitor problems were caused by the monitor's power supply. Joe also said these power supply problems were often caused by failed electrolytic capacitors. Joe said he was able to fix many computer monitors by just changing all of the power supply electrolytic capacitors. Rather the fix that failed monitor, I just a bought a new one.


Symptoms:
The inoperative HDTV had been bought at COSTCO and had already been returned once to a COSTCO repair center for repairs. Cost to ship and insure the HDTV was 67 dollars. We received back a new HDTV set. Turn around time was over a month, with many long distance telephone calls being required. The new HDTV worked for about three months after it was received. When the returned HDTV failed, it trapped a DVD disc that had been left in the HDTV DVD player. The new HDTV failure symptoms were the same as the original HDTV failure. The red led indication would not change to green when the remotes power on button was pushed. There was no picture and no sound. The remote is required to operate the TV set.


Economics:
My wife's HDTV with internal DVD player was very expensive. Worse yet, the trapped DVD disc was the movie Flash Gorden Space Soldiers 1936. A local TV shop wanted 85 dollars to look at the failed HDTV; repairs were 75 dollars labor an hour plus parts. I quickly figured out that if I could fix the problem it would save a lot of time and money.


Internet Search:
I checked the Internet to determine if other AKAI owners had similar problems with their HDTV sets. There were lots of AKAI 27 inch and 32 inch HDTV set owners listing problems. Without exception all of the complaints concerned the HDTV power supply PC board and failed electrolytic capacitors.


General Internet Consensus:
Most of the AKAI HDTV sets worked just great and that many had been sold worldwide. There were some AKAI HDTV sets that did have power supply problems. Most of the AKAI HDTV set owners were not very pleased with either AKAI or the COSTCO response to the inoperative HDTV power supply problem.


Trouble Shooting:
All electrical power was removed from the HDTV set. The HDTV was placed face down on a workbench with a piece of cardboard to protect the display screen. The HDTV back panel cover was removed. There were many screws of several different sizes. The power supply PC board was separate from the rest of the set's components and was easily identified. The power supply PC board contained several different individual different voltage power supplies. Three electrolytic capacitors located on the PC board had obviously failed. The tops of these three capacitors were puffed out. Often when electrolytic capacitors fail they get over heated and the top of the capacitor is puffed out displaying an over pressurized appearance. The power supplies on the PC board were of the switching type. Switching type power supplies are also used in computer monitors to save money and weight.


Power Supply PC Board Removal:
The power supply PC board was mounted to the HDTV back panel with several screws. These screws were removed. There also several multi-pin connectors attached to the PC board. These connectors were numbered with a black felt marker to ensure correct reinstallation. The connectors were Hot-glued in place. A sharp knife was used to remove the hot glue. The connectors were removed.


Repair:
The three suspect failed capacitors were easily removed. The three capacitors were each 1000 ufd and rated at 16 working volts. The other power supply PC board electrolytic capacitors were visibly checked. Three new capacitors were installed, they were rated at 1000 ufd at 25 working volts. On the PC board the three electrolytic capacitors were in just one of the power supply circuits and were identified as EC18, EC19, and EC20.


The New Electrolytic capacitors:
These were low impedance / high reliability radial lead polarized aluminum capacitors, they have a plus and minus connection pins. Correct installation of any polarized capacitor is required. The three new electrolytic capacitors were specifically designed and rated for service in switching type power supply circuits. Switching type power supply electrolytic capacitors need to be both very robust and designed for use in high frequency circuits. General-purpose aluminum electrolytic capacitors should not be used in switching type power supplies, if capacitors designed for switching power supplies can be obtained.


Final Repair Steps:
The PC board was reinstalled without the electrical connectors to the PC board being hot glued. The HDTV back panel cover was refastened. Watched episodes one through five of Space Soldiers. It was well worth the time and three electrolytic capacitors to fix the problem. The repairs saved a lot of time and money. The repair was very simple and not the least challenging. It took longer to remove and then reinstall the HDTV back cover panel than it took to replace the three failed capacitors.



Safety:
These types of repairs should not be attempted without a complete understanding of the dangers involved with working on electrical equipment, especially working around power supplies and charged capacitors. Proper desoldiering and soldiering techniques need to be used.

Conclusions:
Flat screen computer monitors and TV sets do fail. Repairs of electronic equipment can be very expensive. When your computer monitor or flat screen TV does fail, you might consider a visible inspection of the equipments power supply. A simple repair might save you a lot of time and money.


Aug 12, 2008 | Akai LCT2785TA 27 in. LCD Television

2 Answers

Universal remote wont work with this TV


Questions: Who is "Sansui", the digital box ? or the TV? Is the "digital box=remote control"? turn on what you want to control.
Face the RC face down or away from TV,or whatever you want to control. Usually:: push & hold TV & SEARCH button until light blinks, two, three times? FACE THE TV and put the code for the [TV=Sansui ?] You said #189 try 0189 [zero,one,eight,nine]
2nd) TV power ON!,....HOLD down (and if you have a SEARCH) button and the tv power button on RC, two or three blinks, push up arrow once, press power button for TV on RC, nothing!, continue...up arrow, power button. when the TV turns off, you have found the code,. YOU MAY HAVE TO DO THIS 50-150 TIMES because the RC is looking through EVERY code!

Sometimes

Apr 26, 2008 | Sansui CDVD1300W 13 in. TV/DVD Combo

2 Answers

TV Won't come on...




Hello to all from Tom Arnold, WA6OVP

Subject: Repair of computer monitors or flat panel TV’s.

History:
Recently my wife's 27-inch AKAI (LCT21AS) 27-inch flat panel HDTV with DVD player quit working. Years ago, when I had an analog computer monitor quit operating; Joe Fadden WA6DDF had mentioned to me, that often computer monitor problems were caused by the monitor's power supply. Joe also said these power supply problems were often caused by failed electrolytic capacitors. Joe said he was able to fix many computer monitors by just changing all of the power supply electrolytic capacitors. Rather the fix that failed monitor, I just a bought a new one.


Symptoms:
The inoperative HDTV had been bought at COSTCO and had already been returned once to a COSTCO repair center for repairs. Cost to ship and insure the HDTV was 67 dollars. We received back a new HDTV set. Turn around time was over a month, with many long distance telephone calls being required. The new HDTV worked for about three months after it was received. When the returned HDTV failed, it trapped a DVD disc that had been left in the HDTV DVD player. The new HDTV failure symptoms were the same as the original HDTV failure. The red led indication would not change to green when the remotes power on button was pushed. There was no picture and no sound. The remote is required to operate the TV set.


Economics:
My wife's HDTV with internal DVD player was very expensive. Worse yet, the trapped DVD disc was the movie Flash Gorden Space Soldiers 1936. A local TV shop wanted 85 dollars to look at the failed HDTV; repairs were 75 dollars labor an hour plus parts. I quickly figured out that if I could fix the problem it would save a lot of time and money.


Internet Search:
I checked the Internet to determine if other AKAI owners had similar problems with their HDTV sets. There were lots of AKAI 27 inch and 32 inch HDTV set owners listing problems. Without exception all of the complaints concerned the HDTV power supply PC board and failed electrolytic capacitors.


General Internet Consensus:
Most of the AKAI HDTV sets worked just great and that many had been sold worldwide. There were some AKAI HDTV sets that did have power supply problems. Most of the AKAI HDTV set owners were not very pleased with either AKAI or the COSTCO response to the inoperative HDTV power supply problem.


Trouble Shooting:
All electrical power was removed from the HDTV set. The HDTV was placed face down on a workbench with a piece of cardboard to protect the display screen. The HDTV back panel cover was removed. There were many screws of several different sizes. The power supply PC board was separate from the rest of the set's components and was easily identified. The power supply PC board contained several different individual different voltage power supplies. Three electrolytic capacitors located on the PC board had obviously failed. The tops of these three capacitors were puffed out. Often when electrolytic capacitors fail they get over heated and the top of the capacitor is puffed out displaying an over pressurized appearance. The power supplies on the PC board were of the switching type. Switching type power supplies are also used in computer monitors to save money and weight.


Power Supply PC Board Removal:
The power supply PC board was mounted to the HDTV back panel with several screws. These screws were removed. There also several multi-pin connectors attached to the PC board. These connectors were numbered with a black felt marker to ensure correct reinstallation. The connectors were Hot-glued in place. A sharp knife was used to remove the hot glue. The connectors were removed.


Repair:
The three suspect failed capacitors were easily removed. The three capacitors were each 1000 ufd and rated at 16 working volts. The other power supply PC board electrolytic capacitors were visibly checked. Three new capacitors were installed, they were rated at 1000 ufd at 25 working volts. On the PC board the three electrolytic capacitors were in just one of the power supply circuits and were identified as EC18, EC19, and EC20.


The New Electrolytic capacitors:
These were low impedance / high reliability radial lead polarized aluminum capacitors, they have a plus and minus connection pins. Correct installation of any polarized capacitor is required. The three new electrolytic capacitors were specifically designed and rated for service in switching type power supply circuits. Switching type power supply electrolytic capacitors need to be both very robust and designed for use in high frequency circuits. General-purpose aluminum electrolytic capacitors should not be used in switching type power supplies, if capacitors designed for switching power supplies can be obtained.


Final Repair Steps:
The PC board was reinstalled without the electrical connectors to the PC board being hot glued. The HDTV back panel cover was refastened. Watched episodes one through five of Space Soldiers. It was well worth the time and three electrolytic capacitors to fix the problem. The repairs saved a lot of time and money. The repair was very simple and not the least challenging. It took longer to remove and then reinstall the HDTV back cover panel than it took to replace the three failed capacitors.



Safety:
These types of repairs should not be attempted without a complete understanding of the dangers involved with working on electrical equipment, especially working around power supplies and charged capacitors. Proper desoldiering and soldiering techniques need to be used.

Conclusions:
Flat screen computer monitors and TV sets do fail. Repairs of electronic equipment can be very expensive. When your computer monitor or flat screen TV does fail, you might consider a visible inspection of the equipments power supply. A simple repair might save you a lot of time and money.


Jan 03, 2008 | Akai LCT2785TA 27 in. LCD Television

1 Answer

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assuming you have un plugged the set to re set shutdown circuit you might check all zener diode's around power supply pay attention to 9v supply these tend to open after power problems.

May 31, 2006 | Orion STV2763 27" TV

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