I have a pnasonic crt tv model txw28r4dp. it goes to standby after a few seconds. i have read the service manual and it seems to be either dry solder or connection near the lopt ??? can you help and could i fix this myself
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Re: tv goes to standby
Yes require sodering iron lopt is the Line output transformer large cylindrical plastic item on circuit board that has a thick wire that connects to the CRT (tube) with cap on the end. Do Not Touch as 24
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VIF stage circuit fault. Contact any service technician. If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience. http://electronicshelponline.blogspot.com/
Five blinks - AKB circuit (automatic kine bias), the
timer/standby indicator blinks for about 30 seconds then goes to the
self-diagnosis function. Something is wrong with the video. Check video
out, Q705, 732, 761 and other components on the C board, also check
Q218, 219, 220 on the A board. In addition, unit could be in IK
blanking, try turning up screen slightly.
Sounds like a failure in the C Board or AKB Circuit.
the audio (AUDIO), unit goes to standby and blinks the self-diagnosis
code. Check IC406 audio amp, PS401, and 402. On some projection
models of Sony TV sets, this code means that T8005 (flyback
transformer), or the
associative components in the high voltage circuits are defective on
the D board.
I have normal tv model CNT 2588 code 981, remote control was out of order and I tried to buy a new one from many places in UAE, Suadi Arabia & Egypt but I failed due to it is old model and no spare parts. So I use the tv function through Satel Decoder and use tv main power button for swithing on and off. It seems that caused a problem and tv now could not get power to switch on. Would you e-mail me with the repair manual including the Elect.Circuit to try to repair the problem. Also if you can arrange to send me a new remote control model CNT 2588 code 980. Since the TV Picture and sound are still in an excellant condition, please e-mail me you kind response with the cost if any to send you my Address and money.
Dead, led flashing red/green at first, then going to red standby
Replace C604 (1000uF, 16v) elec. cap. It is in the decoupling circuit for the 5 volt supply
Reverts to standby from switch on via TV or Video
No 5v rail because FET MTP3055 o/c. (BUZ71 will do nicely)
Goes straight to standby, after a quick burst of power
Replaced R952 (39K), had gone slightly high