Question about Philips Magnavox 20MC4304 20 in. TV/VCR/DVD Combo

1 Answer

No Turn On

I have a schematic of the power supply and have used it to check it's components. The only thing I found was a open 560K resistor in the string of four that bias the FET. With the set off and pluged in, the voltage on the COLD side is only about half what the schematic calls for. Is this normal?

Posted by on


1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 20 achievements.


    An expert that got 10 achievements.


    An expert that got 5 achievements.

  • Philips Master
  • 5,138 Answers

Look for 2.2uf 100v cap near flyback.

Posted on Jan 27, 2008


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Power supply is only 12months old very little use. Was working fine but one day failed to turn on..its not overloaded its rated way,way above what my system should need. Being an auto electrician I thought...

This resistor is for overload its like a protection unit your system may Overload but you need a multimeter to test the Diodes and you might find that one of them is short this can cause the resistor to blown
you can find this resistor in High Voltage circuits
hope it will help


Nov 02, 2010 | Thermaltake 700-Watt Power Supply

5 Answers

ViewSonic N3250W Television with FSP212-3F01.dead needs VOODOO

I am working on the same power supply right now, my has a bunch of bad caps that I already replaced but I did not try to turn it on yet becuase I see that RS1 and RS8 are missing, some one had try to fix this power supply. Can you please tell me the value of these two resistors? Please see my pictures at
Your problem sound like the logic board problem, I can tell you what you should have if I can find out if these two resistors were left out from the factory or some had removed them. I fixed the same power supply for the N2652 but I did not take the pictures of the board, I wish I did.3a99fcd.jpg

Jun 17, 2010 | ViewSonic N3251w 32 in. LCD HDTV

1 Answer

Press power button just clicks, no power. Found

The best thing to do here that is easy-----get at the two STK-392-110 CHIPS and un-solder both of them--if the set then comes on--one is bad--you might also take a close look at all the low value resistors around them--all have location numbers on the top of the board--like RK51 etc.

If you find a discolored resistor--or if unsoldering the chips lets the set turn on----you have found your problem.

Let me know if you have questions or need help--I am here to help people.


Oct 23, 2009 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

ATX-300GU PSU: 32V around Q4/Q5 circuit

could just be the regulating power transistors are burned out or one of their biosing components, there a few meaty capacitors that may be causing a surge, but the safe thing to do would be to start with a new one, the reason is, modern drives are so sensitive that you could blow their circuitry and then lose the harddisk! All the best - the Yeti

May 17, 2009 | AOpen Power Supply: ATX-300GU (PS4300GU)...

1 Answer

Akai PDP4225M std/by red light only

1st your power supply needs replaced. But you could have issues with the sustain boards and or your panel that is causing your power supply to fail. once you replace your power supply you should be able to power up the set, but if you don't get a picture then you will have to trouble shoot the sustain boards and panel.

Jun 30, 2017 | Akai PDP4225M 42 in. Plasma Television

1 Answer


this is because R001 is not 5.6 ohms, it's 560K ohms

Nov 10, 2008 | Akai PDP4225M 42 in. Plasma 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

3 Answers


I have good news and bad news for you. I'll give you the good news first. You know that new DVD player you have been wanting but never could buy because you already had a DVD player? 
Well, let's just say that you don't have that problem any more. When you dropped that screw on that resistor, you not only caused the fuse to blow, but you took out a few other components with it. This type of power supply is called a switching power supply because it takes AC voltage and then converts that AC voltage to DC voltage to power part of the circuits in the DVD player, then it takes some of the DC voltage produced and uses it to power an oscillator which provides a switching action for a Power MOSFET which is used to drive a switching transformer and then that voltage is converted into DC voltage for the other circuits not powered by the first power supply. Now this creates a problem, because when these types of power supplies blow out they take a lot of components (active and passive) with the blown out component.
Now for the bad news. These types of supplies are very seldom repairable, not because you can't find the parts and not because you cant find the layout, but usually because the parts are hard to find, in the case of the MOSFETs, the Switching Oscillator, and other active components.  Also, the schematics for these devices are not to be found anywhere even by locating the manufacture. This is because most of these units are put together in Taiwan or in Bangkok and then branded by a company, meaning the company whose name is on the unit is not the company who manufactured the unit. So schematics and service diagrams are usually not to be found.
I know this may not help you, but you can try to find the Power supply manufacture by using google, and getting them to send you a new board, or you can try to repair the board yourself, but remember you will have to hunt down at least 3 bad active components and a number of bad passive components.
Thank you,

Apr 22, 2008 | Televison & Video

2 Answers

On standby

Mine does the same thing..........
If anybody knows the problem ........please e-mail me.

Oct 04, 2007 | Denon AVR-681 Receiver

Not finding what you are looking for?
Philips Magnavox 20MC4304 20 in. TV/VCR/DVD Combo Logo

98 people viewed this question

Ask a Question

Usually answered in minutes!

Top Philips Televison & Video Experts

The Knight
The Knight

Level 3 Expert

75017 Answers

matt martin
matt martin

Level 3 Expert

1213 Answers

Donald DCruz
Donald DCruz

Level 3 Expert

17130 Answers

Are you a Philips Televison and Video Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides