Proscan plded3257a-b issues - Proscan 42LA30H 42 in. LCD Television

Sorry to say, but Proscan are cheap Chinese junk that costs $60. If your WiFi is STRONG, and you are close to it, just send it back.

https://www.google.com/search?q=ProScan+Elite+tablet%2FDVD+Player

You will see in this link that it is a known issue.

https://www.google.com/search?q=ProScan+Elite+tablet+DVD+Player+won%27t+connect+to+WiFi

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If it was my TV I'd recycle it then buy a name brand set, Proscan sets are plagued with issues.

I would try replacing the remote first. You can get them here www.remotes.com

Hello John West,

I just checked MY first recommended SPARES dealer
(link will be at bottom: "SHOPJIMMY" for stock... on your
ProScan plded3257a-b... They are out-of-stock

WHICH MEANS MY 1st GUESS is a popular GUESS.

Your main POWERBOARD is divided into specific power sections... MOST LIKELY... you could open your set and (I DO NOT recommend) be able to measure... the PRINTED voltages around the out-put points WRITTEN around ON the Printed Circuit Board... (but these boards are in-expensive and the risk of injury is not worth the POTENTIAL savings
(assuming you have the requisite skills & materials).

Always check your OWN BOARD NUMBERS...!!!

Never force any connections...!!

Take lots of pictures ... put EVERYTHING EXACTLY BACK.


My first and ALWAYS recommendation... always protect delicate SEMI-CONDUCTORS by wearing anti-static wrist straps... A tiny static spark you might not feel is sufficient to RUIN the diodes in your cars ALTERNATOR (honest... for reals).

Second serious precaution... Use shopjimmy, amazon, eBay or worse... Searspartsdirect.com... (at page bottom)

Never rely on anything but your OWN circuit board numbers.

Serious ELECTRONIC technicians always take STATIC PRECAUTIONS... and turn off the power (when-ever possible).

It is not improbable that the mainboard is your issue...
but compared to a "QUALIFIED" (good) home repair technician...

It is a mistake you can afford about 5 more times...
and if you can go BACK to your ORIGINAL FAILURE condition... you are doing fine (excellent start)...

Most "home technicians" aren't even good.

As far as I'm concerned... these packs are too cheap to recommend live power tests (YOU can get seriously ZAPPED)...

If the POWER BOARD does not immediately power up... I would suggest you assume 1 (one) of two (2) things...

1. Your "NEW" board is also bad (or you did not try to select "sources" when you installed it... (been there.. did that).

2. It was actually your MAIN-BOARD that needed to be replaced.

Buy one.... TRY IT.

Hey... if you like the set... so you end up with a couple of spare packs... properly handled & stored they will only appreciate in value).

Ill-advised activity... (voltage testing)

If you own a decent volt meter...
and you can look CLOSELY at the TEST POINTS... YOUR POWER BOARD voltages are printed on the circuit-board OUTPUTS:

Just keep in mind... you can get hurt... while causing more damage... with careless handling!!

Take photos... Work safely... Check your numbers and
ALWAYS wear ESD (static) wrist bands...


TV Parts Universal TV Stands DLP Chips ShopJimmy

Water Filters Lawn Garden Appliance Parts

See if a firmware update is available

correct site www.proscanvideo.com

Contact any service technician. If you wish to get some details; check the site linked here. Surf the site with patience. Pull up older posts.
http://electronicshelponline.blogspot.com/
It will be best to replace the power supply regulator board as card basis rather than making "Surgery" to it; which usually will make loss for both money and time.

What is the problem you faces with this TV? Provide more details please. If you wish to get more details, check this link. http://electronicshelponline.blogspot.com/ Selecting the view option, either to Mosaic / Time slide, can be selected by the drop-down list, at the top left of the display window, will make surf easy. You can also do a search, by type in the brand name/model number/IC used, in the search box at the top right of the display window.

OK I Have a 40" Proscan 40LD45Q
had the power problem when you turn it on it would flash and then cut off again.
after checking I found that the transistor on the power board was bad.
Its one of the 2N4401 transistors found on the cold side in between the
cluster of resistors and and mosfet heat sink. kind of hard to get too
but replaced it and tv works great now.. $1.19 at radio shack for the part.
Hope this Helps ..
By Lynn

VIA board graphics it is not supported,not all graphics video board supported on all LCD HD tvs.