Question about Hitachi 43FWX20B 43" Rear Projection Television
Our hitachi started having red convergence problems, then the blue seemed to be going too. whereas the kids thought it was cool to have a 3-D tv it was driving me crazy. the site here has been a fabulous help and between several different sources we decided to replace the stk's. so we ordered our parts and spent a few hours taking apart the tv and following the step by step instructions found here elsewhere, soldered it all back up and voila! it looked exactly the same as before :( the good news is we didnt blow up the tv and everything is still "working" but we still have the convergence problem. we have now gone and checked the resistors and i looks like two of them are bad..oops. so here's the question, did we mess up ? we are going to replace the resistors but will the new stk's have gone bad again that quickly? or should they be okay? if the new resistors don't fix the problem is there anything else to check or will it need to become a door stop? thanks in advance for any insight.
Good Day Johnny boy;
The red 'light' near the regulator is normal. It is an indication that a/c is present, the green light, led's, are DC voltages.
When the STK's go bad in this TV, the originals are STK392-110, the manufacture recommends that they are replaced by STK392-150's. The resistors are used to control the bias of the IC's the help shape the wave form for the convergence yoke. The resistors are very low ohm-age and it is very important to replace with correct values.
After replacing the IC's and still getting red image after adjustment/ magic focus, but you stated "weird blurr". Is the "blurr" flame like? Like from fire?? If so the TV's red tube is gassy or weak. Could try to rejuv, but could short life the tube.
Good Luck, hope this info was helpful, Big Irish.
Posted on Jun 21, 2008
Try the resistors-You still have a good set of STKs there..accordianman
Posted on Mar 17, 2008
In all probability, the resistors are effectively fuses and were "blown" when the original STKs went bad. Repalce the resistors and you should have your good picture back.
Posted on Mar 17, 2008
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.
Posted on Jan 02, 2017
Tips for a great answer:
Jul 29, 2011 | Hitachi 43FWX20B 43" Rear Projection...
Jun 04, 2011 | Hitachi 43FWX20B 43" Rear Projection...
Jun 21, 2010 | Hitachi 43FWX20B 43" Rear Projection...
Feb 25, 2010 | Hitachi 43FWX20B 43" Rear Projection...
Nov 25, 2009 | Hitachi 43FWX20B 43" Rear Projection...
Jun 24, 2009 | Hitachi 43FWX20B 43" Rear Projection...
May 18, 2009 | Hitachi 43FWX20B 43" Rear Projection...
Apr 25, 2009 | Hitachi 43FWX20B 43" Rear Projection...
Dec 16, 2006 | Hitachi 43FWX20B 43" Rear Projection...
Aug 29, 2015 | Hitachi 43FWX20B 43" Rear Projection...
569 people viewed this question
Usually answered in minutes!
Step 2: Please assign your manual to a product: