Akai TV model CT3216 very weird problems

[[email protected]]

This set will seem to power on soon after it is plugged in. Then the
led
will flicker in about one second bursts and there is no raster. Every
so
often though if you press a few buttons on the remote the raster may
pop in
for a half second or so. Somtimes you can see a decent picture, and
other
times it looks monochrome and detuned or there is just snow. There is
never
any sound present. The set will not power off. If you try to power the
set
off it will shut down for about two seconds and then power back up
again by
itself, doing the same thing. I suspect something in the microprocessor
circuit but truthfully I'm not sure where to start on this thing. Has
anyone
ever seen this symptom before on this set? Thanks, Lenny Stein, Barlen
Electronics.

 

[Jerry G.]

There may be parts failing in the power supply, and or scan circuits.
This would require proper troubleshooting to service.

If you are not trained in TV servicing, or set up for this type of
work, you should give the set out for proper and safe service.

Jerry G.
======

 

[b]

[email protected] ha escrito:

This set will seem to power on soon after it is plugged in. Then the
led
will flicker in about one second bursts and there is no raster. Every
so
often though if you press a few buttons on the remote the raster may
pop in
for a half second or so. Somtimes you can see a decent picture, and
other
times it looks monochrome and detuned or there is just snow. There is
never
any sound present. The set will not power off. If you try to power the
set
off it will shut down for about two seconds and then power back up
again by
itself, doing the same thing. I suspect something in the microprocessor
circuit but truthfully I'm not sure where to start on this thing. Has
anyone
ever seen this symptom before on this set? Thanks, Lenny Stein, Barlen
Electronics.

is this an itt-nokia chassis?
things to check first:
-power supply caps - just replace. these can cause all kinds of odd
problems.
-soldering in power supply, data bus lines, xtal. and all over
-cracked pcb traces.
-eeprom

regards, Ben