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Rubber Duck Posted on Aug 22, 2019

Visio E70-E3 not working, need help diagnosing which component is bad. Has a 09-70CAR0D0-00 power supply. Help figuring out what is the standby wire and standby voltage.

I have an E70-E3 TV that does not show a pictures. I have pulled the back off the TV and looked over the power supply but did not see any burns or bulged capacitors. I am not sure which wire on the powersupply is the standby wire as it is not as obviously marked as what I have seen on other videos. Can anyone help me diagnose the TV so I can accurately determine which component is bad?

5 Related Answers

Anonymous

  • 62 Answers
  • Posted on Mar 29, 2008

SOURCE: power supply

Call 800-726-4405 - But the part may not be available - request an exchange through the manufacturer. By law the manufacturer must provide parts for 5 years.

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Anonymous

  • 1 Answer
  • Posted on May 12, 2008

SOURCE: PDP4294 PowerSupply Components

For the life of me, I can not find those caps online. Anyone have a direct line to the item? Mine also blew out yesterday.

Anonymous

  • 11 Answers
  • Posted on Jan 04, 2009

SOURCE: Trying to identify a capacitor on the power supply board

IF you have the G BOARD part #A-1316-367-A it's:
1-162-133-00 CERAMIC 390PF 10% 2KV
IF you have the G BOARD part #A-1316-422-A it's:
1-161-754-00 CERAMIC 0.001MF 10% 2KV

freetek

Steve Allison

  • 5569 Answers
  • Posted on Aug 20, 2009

SOURCE: No power when plugged in. On off button stays dark, nothing works

Everyone has problems with SMPSs; mine started in 1971 when IBM was first using them; they were literally blowing up and throwing molten copper several feet.
Anyhow, if you have the benefit of a capacitance meter with DF function, check the main filter caps all of the smaller caps. The quality and durability of electrolytics is bad and getting worse and once one of these fails anywhere in a feedback path, the supply will not start. HF is hell on electrolytics.
The (ferrite) transformer in a switcher measures very low on the Ohms scale; depending on power handling and service frequency, primary <<100 Ohms, secondary from 0.? - 10 Ohms between taps, because they operate at higher frequencies. The 50 volts from the diode bridge is way too low; you probably have failed 100-200 uFd. electrolytics right close to them although this is fairly rare since they are only working with 120 Hz. From a 120 VAC line, you should have ~ 160-170 DC volts at no load if the caps are still working as they should and you have no notable resistance between the AC and the diodes.
Well-designed switchers are wonderfully efficient and very reliable if the maker didn't cheat on component quality. I've repaired literally thousands as a sideline in a now retired business and after studying them and adding a ceramic cap.or two and better quality electrolytics, they will run for decades. At one time, I had standard repair prices on ~ 70 different models.
My guarantee was 'lifetime' and that was limited only because I retired.

Testimonial: "Thanks fo the tip and taking your time to answer! Great insight! "

electroman

  • 1039 Answers
  • Posted on Nov 22, 2009

SOURCE: Insignia NS LCD32 no power

If one is domed on top and there several other of the same value replace them also even if not domed. Check fuse on power board. When plugged in there is a constant 5 volts that will be going to the main board from the power board. The main board will send a turn on voltage to the power board from the main. Disconnect the inverter boards from the power board. If it still won't turn on replace the power board.

Testimonial: "helpful but could use alittle more info"

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Sony KDL-32EX340 won't turn on

You could try testing the power supply by using a multimeter to look for voltage and see if any of the components are bad. If you can't find a schematic of the power supply, you may want to consider visiting a local electronics store or repair shop to get more help. Additionally, you could try replacing the fuse to see if that helps, but it would be best to confirm that is the issue before replacing it
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Help with my vizio e70-e3 TV?

Yes it is repairable and you will know in future not to buy Visio. They are bargain basement at Sharp / Sony prices!

https://www.fixya.com/support/r29790007-repairing_own_television

Take it apart and power the LEDs independently using a variable power supply. They should all be the same brightness. Or..... take it to a pro and get the job done right.
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It will be the back light board that has failed.
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When i switch on, it is always on standby mode, screen doesnst show picture

With the Samsung PPM42S3QX Power Supply Board is the likely the cause. Testing and diagnosing - Remove the back of the TV and check the voltages on the power supply. The output voltages will be labeled on the board. Look for obvious need for replacement such as swollen caps, bad fuse, burnt components.
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Busted component

Getting a schematic is rather doubtful. You might be able to get a general idea of the circuit from somewhere on the 'net.

Was the power supply dead?

ATX style power supplies have both a standby and main section. The standby supplies a low current +5 volts to a small portion of the motherboard.

If the component failure is in this section, this standby voltage will be missing or incorrect, and the computer will be dead- won't power on at all.

I've seen a number of catastrophic failures in this standby circuit, and repair isn't suggested or economically feasible, especially as some parts often poof beyond identification.

When the pwr button is pushed, the main section comes on, and supplies +5 (Red wires), +12 (Yellow wires), +3.3 (Orange wires), -5, -12. Look here for this info http://pinouts.ru/Power/atx_v2_pinout.shtml

Voltages are precisely regulated, and any substantial deviation (more than a few 10ths of a volt) indicate a problem, especially on the +5 & +3.3 lines.
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