Question about Protron PLTV-4250 42 in. LCD Television
My flat screen TV won't turn on???? Help!!!
Protron PLTV 4250- wont turn on-
Had the same problem with one here- The 110v end of the power supply board was found damaged, The following items may need to be replaced:
Fuse F1 (soldered in) . 6.5a @250v time delay
Mouser 576- 021506.3HXP – note this style is for a fuse holder instead of solder in- I added a fuse holder on the board
RT4 & RT5 inrush surge suppressors - I used shintron 8d-18 power suppressing thermistors
BD1 bridge rectifier - Mouser 627-D15 XB 60H Shindengen
If you want a little more protection modify the board as follows:
1.replace only RT5 in its original location & move RT4 into the other ac input line in front of the bridge rectifier. (cut trace & drill solder holes)
2. Add: MOV (metal oxide varistor) across ac inputs of bridge rectifier.
Maida mdc-z481-8oul or D69 ZOV 481 RA 105
This arrangment is copied from a samsung power supply.
Be careful when plugging in the I/O box on the outside cover, if any pins are inadvertantly bend loss of picture will result.
I have pics if anyone needs them
Posted on Nov 24, 2008
Musicman1429 could you send me the pics of the repair. my email is email@example.com I am in the process of repairing a viziol30 lcd television. I believe that the mov is going out and anything that could be helpful is appreciated. Thank you.
Posted on Jan 14, 2009
Get a power extension cord and take the TV plug to the power extension cord and relocate to another room and find another outlet.Plug it in and see if it works.If it doesn't,i hope you have warranty:(
Posted on Nov 11, 2008
If I where you, I would just go to hardware store and get multi-adapter for $10 and make your own
Posted on May 20, 2009
SOURCE: No Picture
forum.electromaniacs.com/index.php?app...do... - United States
OK use these Service and repair manuals above, these are the manuals us engineers use to troubleshoot and repair things like this.
If you feel that you cannot, or do not want to do a DIY. Please contact, Proton, head office, and ask for a referral to an authorised service center, then ask them for a "Quote" before proceeding with any repair.
Posted on Apr 29, 2010
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