Is Magnaxox really that poor quality?

[Fud]

I'll keep to the point. I have a Magavox 42 in LCD model # 42MF531D/37 . One day the screen started flashing then went out. The power light just kept flashing over and over.

So I took it apart and found blown Capxon caps and replaced them with another brand same specs and everything. Nothing else on the power supply looked burned or buldged. So after recapping and turning it back on the audio worked but no picture at all just black but the power switch doesn't flash now at all like when it totally failed.

Been reading this is a common problem with magnavox/phillips dying right after warranty.

What would be the best approach to this? Changing out the whole power supply and hope that solves it instead of getting a technician to charge a fortune just to look at it then sit in the shop for a month.


On a side note a dell monitor powers up sometimes then goes black too then back on sometimes. I tried to take it apart but can't for the life of me figure out how to get to the PSU of it even after prying they back off where it spaps in. It's like everything inside is spot welded together with no screws hardly. That is a 21 in flat screen Dell and would hate to throw it away or the TV if it can be fixed without some shyster charging 500 bucks to do each of them.

Any help would be appreiciated.

[sofTest]

Re: Is Magnaxox really that poor quality?

You only replaced the visually bad capacitors? If so, you should try replacing the others also.

[Fud]

Well all the radial ones were replaced

Even the one that didn't look bad, the transformers looked kind of yellow aged the wrapping but didn't look burned at all. Someone told me the backlight could have burned out then someone else said you can still see a picture if that is the only thing that goes just very dim.

So obviously there is no power going to the screen just the audio. I'm not even sure where to start tracing this other than the PSU or replacing the whole board instead hoping that might work.

[Logistics]

Re: Is Magnaxox really that poor quality?

I thought the test for seeing if the backlight was broken was to shine a flashlight at the screen to see if there actually is video.

[Toasty]

Re: Is Magnaxox really that poor quality?

The "Old Heads" will remember Maggotboxes.


Pics please. WE LIKE PICS!

[Fud]

Re: Is Magnaxox really that poor quality?

The only pic I have now is from the actual psu from a website. It doesn't show much just what the board looks like. the three on the type right were Capxon and the other on the bottom right the same just a different voltage.


Oh Toasty I love that rambocat.gif and have been using it on other forums for a while.

[Toasty]

Re: Is Magnaxox really that poor quality?

>>Oh Toasty I love that rambocat...<<

TY!

But does yours carry Ltec frag grenades? Or, Rulycon* incendiaries?



* Not to be confused with Rudycon gas cannisters.

[Wizard]

Re: Is Magnaxox really that poor quality?

Show rest of the picture of this tv with back off please to see if it is really philips or not.

Philips does make their own boards and PSU and use P-LG panels but i know they do contract with other generic makers.

Cheers, Wizard

[Toasty]

Re: Is Magnaxox really that poor quality?

Do what Logistics said - "shine a flashlight at the screen to see if there actually is video."

Better to use the attachment feature instead of the image link. Dang pic is huge and messes with the topic. Ugh!

Look around on the board for a tiny black fuse. May look like a resistor, but will be marked similar to "F201". It's found on several others and yours may have one too. Might even be that brownish-red piece right in front on the pic. You'll need an ohmmeter to check continuity. Unit unplugged please, lest you look like the cat.

When you can - a down shot of the board is better for us to see components.

Purchasing a new board will get you going. Then you can mess with this one as time permits. How short is your fuse and what's your time worth???

[Fud]

This is really, really embarrasing

I took the back cover off to take detailed pics of all the boards and wires, then i noticed a lead under the cover that i overlooked and didn't plug in. Man I feel so stupid wasting anyones time here since you are so helpfull. But you can smack me around if you like because I deserve it.

Good news is the recap worked and it's working like new now. I knew something wasn't right when doing the flashlight trick and still nothing then suspected a lead not plugged in

Thanks for putting a forum up like this for novices and advanced alike.

You rock.

[Toasty]

Re: Is Magnaxox really that poor quality?

Yup, been there, done that!

Good job!

[Wizard]

Re: Is Magnaxox really that poor quality?

Excellent and post pictures!

Cheers, Wizard