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Tcl 21e11 low voltage in secondary power supply

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6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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SOURCE: no power

look for high voltage cap like 200-250v 100uf that could be bad around flyback. Also look to see if reg. shorted, and horz. output bad.

Posted on Aug 22, 2007

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chrispurs1
  • 372 Answers

SOURCE: LOW VOLTAGES POWER SUPPLY

Hi. It will be easier to help you if you tell us the make & model of your tv set.

Posted on Sep 21, 2007

  • 1 Answer

SOURCE: help for TCL Brand of tv

I WANT THE SERVICE MODE CODE FOR MODEL NO: DP21E101 TCL TV 21"

Posted on Oct 06, 2008

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3 Answers

Sharp Aquos LC-30hv4u


this looks like a power problem sir.

do you use a surge protector?

Jul 14, 2008 | Televison & Video

1 Answer

Tcl-21E11 standby mode only what can i do?


Fault to its main board. Short circuited component/s at it. Contact any service technician; or the authorized service center. 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/ . In most cases, the main board might have to be replaced. If so, a software [firmware] update too might be necessary.

Mar 13, 2015 | Televison & Video

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Whats is the common problem of tv the voltage reading of B+ is not steady it is running to low and high reading


you have lose connection on your power supply or lose capacitor, check it and your problem might be solve..

Sep 10, 2013 | TCL L32D20

1 Answer

Sylvania tv shrinks the sides


Check its secondary power supply voltage from SMPS power supply. Check the smoothing capacitor connected to secondary power supply voltage, replace it.

Jun 13, 2012 | Sylvania 6420FB 20" TV

1 Answer

Model 27LCDB03B-simply appears to be "dead" won't power up-not the fuse


Hello Chris, Hi, your TV's power supply section is not functioning properly. If the fuse is in good shape, then the auxiliary power section of the power supply is not functioning, this section powers the switching oscillator and IC that sends the pulse to the switching element like power transistors to create a main secondary voltage. the main secondary voltage is the circuit that produces all voltage needed source by the TV. what you can do if you are up to it.
A. Visualize any bulging capacitors, replace them. B. Measure the voltage across the following section in particular order so we can find the faulty parts.
  1. the AC input on the Power supply board. (none means open switch or power cable)
  2. the AC after the line filter circuit. (none means open line filter)
  3. the DC on the filter capacitor. (none means problem on the rectifier)
  4. then the AC on the switching element or input on the main transformer. (most likely you won't have any voltage reading hear.)if you do have continue.... (none means you scratch your head, this is the hardest part) check all low value resistors, high wattage resistors open or shorted diodes.
  5. the dc on the secondary filter capacitors.
If not have this checked by a technician, its to complicated for you.

Mar 12, 2011 | Thomson Televison & Video

1 Answer

Hi i m sanjay i m having sony colour television kv-2782me7 i found some problem in power supply section i m geting low voltages frm secondary output i want 135 ,25 ,8 , and -33dc voltages bt i m geting...


there is a possibility of a shorted turn of the flyback transformer. To test. short B-E together on the horizontal output transistor and connect 60W globe across C-E. measure voltage across lamp - if it comes up to 135v then you have a short either in the horizontal circuit or secondary circuit off the flyback transformer or even the transformer itself.

Aug 10, 2010 | Televison & Video

1 Answer

Tv went blank in the middle of a program


it means that tv having low supply voltage. check the secondary power supply along SMPS.

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