Our 4 year old Toshiba 57H83 will suddenly turn into a blank screen (sound OK) for 2-5 minutes, then return to normal, then show a broken picture with vertcal bars.

This problem is very common among.. ocnce in a while its solidation get lose which does not pass the current properly... you may go to electrition and ask him to Solidate your Tv properly do also get check it power distributer supply.... This problem is very common among.. ocnce in a while its solidation get lose which does not pass the current properly... you may go to electrition and ask him to Solidate your Tv properly do also get check it power distributer supply....

yes it can be projection tube ..but plz get your tv solidation completely ... it also can be the ICU's of your tv yes it can be projection tube ..but plz get your tv solidation completely ... it also can be the ICU's of your tv

You say you are "pretty technical", however, you don't know that this is a CRT-based RPTV, which doesn't use a bulb?



There are many things that could be wrong.
IF you can find parts they will be expensive. Figure around 500 for
repairs because they will not be easy to trouble shoot down to a
certain module or part that needs to be fixed with out the skills that
a true TV repairman has. Nothing is plug and play but all circuit board
replacement or unsoldering and re-soldering new resistors, capacitors
or other.


You say you are "pretty technical", however, you don't know that this is a CRT-based RPTV, which doesn't use a bulb?

There are many things that could be wrong.
IF you can find parts they will be expensive. Figure around 500 for repairs because they will not be easy to trouble shoot down to a certain module or part that needs to be fixed with out the skills that a true TV repairman has. Nothing is plug and play but all circuit board replacement or unsoldering and re-soldering new resistors, capacitors or other.

you did not get 100% of the carbon off the
board beneeth the components. Soot [ i.e. carbon black] is conductive, Also, if the boards
were covered with soot [?] it is probable some of the vertical components have heat stress
damage. Check the coupling capacitors, the diodes, and supply voltages to the vertical
area, also look for ring cracks in power deflection circuits.

The IK circuit is killing the
video, set is designed to do this to protect the tube


you did not get 100% of the carbon off the board beneeth the components. Soot [ i.e. carbon black] is conductive, Also, if the boards were covered with soot [?] it is probable some of the vertical components have heat stress damage. Check the coupling capacitors, the diodes, and supply voltages to the vertical area, also look for ring cracks in power deflection circuits.

The IK circuit is killing the video, set is designed to do this to protect the tube