Question about Zenith C27A24T 27" TV

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HOW TO CHECK THE REGULATOR IC - Zenith C27A24T 27" TV

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Have to apply voltage to check, using multi meter can only check short circuit ,it's not accurate.

Posted on Apr 21, 2014

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Posted on Jan 02, 2017

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Playstation2 SCPH 3000 - 5006 General Problems


No Power (Totally Death).
  1. Check the output regulator 12volt DC Power Supply.
  2. Check the Fuse (Voltage Security Fuse).
  3. Check the Flexible cable on switch board (reset & eject button).
  4. Check the Output Diode.
Lens Problems (Optic)
  • Optical Spull not move (up down).
  1. Check the flexible cable.
  2. Check the Optical spull.
  3. If you have SCPH - 3000 series, check the IC Driver (BA 5815).
  4. If you have SCPH - 5000 series, check the IC Driver (LA 6508).
  5. Check the optical flexible cable socket.
  • Optics spool laterally tilted or irregular jump when the engine turn on.
  1. Check the resistor on 102 block (In IC Servo Master Control area = CXD 3098 : 470-8pin,102-8pin).
  2. Check the resistor under IC Servo Master Control.
  3. If you have SCPH - 3000 series, check the IC Driver (BA 5815).
  4. If you have SCPH - 5000 series, check the IC Driver (LA 6508).
  • Optics can only read one CD/DVD format.
  1. Check the Optic Laser Diode.
  2. Check the Optic Laser Diode with Voltmeter : V3 (CD=1080 to 1260, & DVD=800 to 1300), V4 (CD=850 to 900, & DVD=1200 to 1400), V5 (CD=1200, & DVD=1400), V7 (CD=1200, & DVD=1100 to 1400), V9 (CD=1200 to 1400, & DVD=1200 to 1400).
  • Optics Lights not lit (Lens not light).
  1. Check the flexible cable.
  2. Check the optics spull.
  3. Check the SP 3727 IC.
  4. Check the Amp transistor ( in IC SP 3727 socket board), Upper for CD & under for DVD.
  5. Check the IC 7805 (IC Regulator).
  • Excellent optics but won't to read.
  1. Check the mecanic gear.
  2. If you have SCPH - 3000 series, check the IC Driver (BA 5815).
  3. If you have SCPH - 5000 series, check the IC Driver (LA 6508).
  4. Check the ModChip.
  5. Check the IC SP 3727.
  6. Check the resistor (in 220 block), between IC Servo Master Control & IC Interface (CXD 9611 BR).
  7. Check the transistor (in socket optics= pin 6).

on Sep 16, 2010 | Sony PlayStation 2 (PS2) Console

1 Answer

The lcd black after 2 second and when open his back side then he woriking some time and then we turn off it and again on then same proble with that soory for not good english


the problem will be in power supply.

check the 5 volt regulator or 12 volt regulator IC

After geting heatup the IC may malfunction.

Change the regulator IC

Sep 14, 2011 | LG W1934S-BN 19" Monitor

1 Answer

The regulator IC always damage even if we are replace another regulator IC together with the resistor .47ohms..


You need to check the drain into the circuit as the regulator fails ONLY when the current drain exceeds the limit and thereby damages the fusible0.47 resistor.
Either you can use a higher rating of the regulator or you need to check the drain current to see if any component is faulty.

Apr 06, 2011 | Panasonic Televison & Video

1 Answer

The regulator IC is always damage and the resistor .47 ohms...


Hello
Check for any short circuit on the output stage of that regulator IC. you can detect it with the help of a multimeter, set to Ohms range, by mesuring its output to negative. OK.

Apr 06, 2011 | Televison & Video

1 Answer

D52W19 Regulator IC part number.


There are many regulator IC in TV you can find it easy the commonly used are 3 pin part number is 4 digit example LM7809/AN7809 this means possitive ic regulator 9v output. LM7909/AN7809 means neg. output 9V. so you can search it on your board. Good Luck

Jun 01, 2009 | RCA D52W19 52" Rear Projection Television

2 Answers

TV will not turn on


does the standby led goes on, or non at all? if not, check power supply section, look for blown fuse or open resistor in the power supply section. check also the power regulator IC...

Sep 28, 2008 | Olevia Televison & Video

1 Answer

Regulator ic of sony tv kv-g21c1


I am not familiar with the particular model of Sony TV that you have. I can answer genericaly:

There are a number of voltage regulators typicaly used on TV sets. These are usualy IC devices, or a complete descrete circuit. The purpose of these are to regulate voltages that are used to operate various circuits. Most sets can typicaly have anywhere from about five to maybe even a dozen or more throughout the set, depending on the sophistication of the model.

The regulators, like any part in the set can fail with age and use. Sometimes they are damaged from other components failing, or when a regulator fails, it can damage the circuit areas that it is suppying. When the set is being service, the tech must check for other failed parts.


Jerry G.

Sep 01, 2008 | Televison & Video

1 Answer

RT2250 Shuts down on its own after a few minutes of regular operation.


I have the same problem and it seems like it is going into thermal shutdown as ICs 104 and 106 are overheating which are fed from C138. All input source voltages seem to be correct and I do not get any voltage fluctuation from any input on the following regulator ICs. IC 106 3.3 VDC regulator is giving me 3.3VDC as a Output Source voltage and IC 104 5VDC regulator is giving me 5.0 VDC. IC102 15VDC regulator is giving 15VDC output and IC103 -15VDC regulator is constantly dropping voltage from the time of "Power On" until shutdown which takes about 5-7 minutes. I get right around -11VDC when shutdown occurs. ICs 102 and 103 are not overheating which leads me to believe that the IC 103 -15VDC regulator is faulty and putting a load on the other regulators which are trying to compensate for the voltage drop. I plan to replace the regulator with an NTE 969 replacement.

Dec 19, 2006 | RCA RT2250 System

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