Return to the Electronics Forum | Post a Follow-Up

 o
tv has to warm up

Posted by pyro3256 (My Page) on
Mon, Jul 9, 07 at 1:49

found this forum on a search and fixed a blow disk capacitor to solve a power problem. tv has work fine for weeks since.
now when we turn on tv, tv powers up to a dark blue screen with light blue horizontal lines with concave borders. this screen remains for some times up to 30 mins. then starts flashing untill normal video signal come in. then the rest of the viewing day is perfect. the audio is there from the start. please help. this is a 36" phillips magnovox smart series. don't know model numbers and such but could try to find them. anybody heard of this please help. im good with tools and sodering is not a prob.


Follow-Up Postings:

 o
RE: tv has to warm up

Well, you need more than good tools and a soldering iron. You also need an Oscilliscope with probes, Hi-Voltage CRT tester, DVM and a TV RF generator to start. The first thing I would do is to verify that all the voltages in the low voltage supply are within specs. Don't mess with the Horizontal voltages unless you know where to probe. A schematic would definitely help. Some TV's have the voltage levels print screened on the main board by the terminals. Have you tried disconnecting the Antenna, cable or satellite signal from the RF input and see if you get just plain snow when you first turn it ON? Bypass the tuner if you have RCA receptecles for video inputs and check it out that way. Too many T/S procedures to list here. Just find a good reputable TV repair person.


 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!


Return to the Electronics Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.


Learn more about in-text links on this page here