Yesterday my near 4 yrs old Toshiba 42H83 rear projection HDTV started having convergence problem all of sudden. The adjustment with the remote can move the red cross vertically, but not horizontally, which is what I need. What's worse, the red color deviation varies in direction in different area. In the center, it is offset to the right, while in the right hand side of the screen, it is offset to the left.
I would like to know if it is easy to fix the problem myself, a guy with some basic knowledge of electronoic only. Since the projection TV now is out of favor, it doesn't make sense to spend 300~500 bucks to ask a professional to fix it. Any advice will be appreciated.;
Vertical and Horozontal convergence not responding to remote control
Found technician near Alicante Sapin. Changed IC (vertical).
Found no power to Units, unable to find problem. Technician says Scrap TV! What do you think?Found technician near Alicante Sapin. Changed IC (vertical).
Found no power to Units, unable to find problem. Technician says Scrap TV! What do you think?
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This tv have a problems known as a convergence problems,it dead.The tv convergence booard the 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board, must be replaced to solved the tv convergence problems.The shop will cost u $300-350 for parts and labors.
You have one or more bad convergence amplifiers. Best to replace both convergence output ICs as well as check low value resistors associated with them.
It sounds like a convergence problem---go into the customer menu and select convergence---set should offer center and multipoint adjustment--in the multipoint look to see if the outer crosses adjust--if red or blue will not adjust somewhere--bad convergence IC's.
Yes the convergence ICs need to be replaced, however so dont the six 1.8 ohm 1watt resistors as Toshiba recomends replacing those six resistors when the ICs are changed. You can get the 50H71 / 50H82 Convergence repair kit as the 42H83 is identical to the 50H71 series, so the kit will work for your model. Heres the link where you can get the kit. http://servicemanuals.vstore.ca/
Hi you have bad convergence ic stk modules ,Cost for repair center to fix is 250.00. call your local repair center ask there prices on convergence ic repair. It is a very common problem every 3 to 5 years .Our service center does a lot of these.
this sounds like a convergence loss... the most likely cause of this is what is known as stk's or convergenc ic(chips) have gone bad.. also it cound be the output resistors. most likely need replaced
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together convergence repair kits for most models.
The kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, etc. Everything you will need to do the repair yourself.
Most projects in life are "easy",if you know how.Chassis will have to be pulled,convergence IC's replaced w/top quality parts to prevent
recall.Some excellant soldering will be needed
for prevent maintenance,for instance,the steel
jumper wires feedig b+ to convergence IC's.
RE-align in servicer mode==final step.
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.
Found technician near Alicante Sapin. Changed IC (vertical).
Found no power to Units, unable to find problem. Technician says Scrap TV! What do you think?
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