20 Most Recent Toshiba 42H83 42" Rear Projection HDTV-Ready Television - Page 7 Questions & Answers


visit this site for information on toshiba schametics
It helped me loads!!
http://tacpservice.toshiba.com/tacp/training/TV/ctv05f.pdf

Toshiba 42H83... • Answered on Feb 19, 2008


Its located behind the video input board. it runs parallel with it and has a plastic bracket over it. Upi wont be able to see it unless you remove the plastic bracket

Toshiba 42H83... • Answered on Feb 14, 2008


I am having the same problem with my red lamp. i get an error on the touch focus and I cannot manually converge the red lamp.
let me know if you find out a way to fix the problem

chad

Toshiba 42H83... • Answered on Jan 02, 2008


I had my stk's replaced, was able to take out the board and brought it to a tv repair shop, the fellow replaced the circuits and re soldered the circuits and heat sinks. Circuit Barn- Auburn, Mass. Jeff Murray did a great job. Reinstalled, and 56 point convergence, tv looks as good as new. I was disappointed too, because the set was purchased in december of 2002.

Toshiba 42H83... • Answered on Dec 30, 2007


http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Toshiba 42H83... • Answered on Dec 28, 2007


Check convergance amp ic and loose connections to the yokes.

Toshiba 42H83... • Answered on Dec 20, 2007


heart ach... of having bad convergance amp ic's
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/

Toshiba 42H83... • Answered on Dec 20, 2007


flayback transformer or tv tube.

i would think it's worth reapir.

Toshiba 42H83... • Answered on Dec 05, 2007


If one tv looks good and another one dosent look good or operate correctly then we know for sure that the problem is not the antenna. Now the menu comes up ok because the menu is injected after the tuner into the video curcuit from a osd or microprocessor. sounds like you could have a defective tuner or antenna block assy.

Toshiba 42H83... • Answered on Dec 03, 2007


There is a large metal case behind the input board in the back of the set called the hyper board that needs to be replaced.Good Luck

Toshiba 42H83... • Answered on Nov 26, 2007


You have a bad hyper board part #23148024.  The part is NLA.  I have one in stock or you can have yours rebuilt at PTS Electronics 800-844-7871. I’m happy to help further over the phone at https://www.6ya.com/expert/dewayne_4a10eab6caecdb92

Toshiba 42H83... • Answered on Oct 27, 2007


You likely have bad convergecne ouput IC's.  They sometimes will be intermittent untill they fail completely. I’m happy to help further over the phone at https://www.6ya.com/expert/dewayne_4a10eab6caecdb92

Toshiba 42H83... • Answered on Oct 27, 2007


You likely have a bad hyper board.  As time goes on the lenght of time it takes to get a clear picture will increase and eventually the picture will never clear up untill the part is either repaired or replaced. I’m happy to help further over the phone at https://www.6ya.com/expert/dewayne_4a10eab6caecdb92

Toshiba 42H83... • Answered on Oct 23, 2007


Check all micro-fuses in power supply.If two or three are bad,a convergence circuit O/H will be necessary.Pro help usually required-chassis pull,replace convergence IC's and careful hand- soldering needed to prevent call-back.

Toshiba 42H83... • Answered on Sep 29, 2007


Very rare to have a "tube" problem--is the real issue red/green/blue mis-alignment?? If so,please read solutions written by me for same or similar problem,includes many different Tosh models.

Toshiba 42H83... • Answered on Sep 29, 2007


Convergence system overhaul cost about $400. No mfr. warranty after 90 days to a year unless you bought an xtended warranty for up to 5 yrs. Good set,worth keeping. Senior tech only== careful soldering needed+ OEM or better quality parts a must.

Toshiba 42H83... • Answered on Sep 29, 2007


You most likely have a burn in on the surface of one of the picture tubes. What you need to do to confirm this, would be to take off the front screen, and with the set turned on, look directly into each one of the lenses, and see if you see a mark on the green or the blue tube. if this is the case, and I am pretty sure it is, the picture tube will need to be replaced, but this set is not a young thing, as the green faint lines is most likely a bad capacitor in the screen drive circuit. If the picture tube is indeed burned on the surface, most likely be better off buying a new TV set. Good Luck

Toshiba 42H83... • Answered on Jul 01, 2007


The VVPU14 hyper module in that unit is a trickey installation because they have their can tabs soldered to the motherboard and next to each of the solder points on the pad are fine wire traces on top and bottom of the board that can easily be broken or over soldered... Check there first, with a fine magnifier. To answer your question, no, there are no resets or anything else you need to do to after the H/M install. Good Luck. Bill

Toshiba 42H83... • Answered on Jun 07, 2007


you tv problem intermittent the problem is in the color circuit, vertical circuit.have a tech check your tv for repairs.good luck.

Toshiba 42H83... • Answered on May 18, 2007


This is a problem with the low voltage condition in the main power supply or the sweep supply, or there is bad capacitors in the vertical driver circuit, or the PIP circuit if there is one. the best way to troubleshoot this would be with a schematic, measure all the voltages and see if there are any lower then normal levels. In the vertical and PIP circuits, you will need an ESR type capacitor meter. if you dont own this equipment, or have had no experience working on solid state electronics, play it safe and call in a tech to assist you in this repair. Good Luck Please dont forget to rate this thread.

Toshiba 42H83... • Answered on Dec 12, 2006

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