RCA 46" TV P46725SK won't turn on
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From: Tom MacIntyre on 4 Jul 2005 17:25 On 4 Jul 2005 10:01:24 -0700, "pink" <dapinkie(a)gmail.com> wrote: >I have an RCA rear projection TV P46725SK - set is plugged in and was >working fine until today when I tried to turn it on. I can hear a >faint "click click click" from the vicinity of the flyback transformer >when the power button is pressed. The power light blinks in unison >with the clicking sound. I'd like to fix this puppy since I don't have >the cash for a new TV right now and it's so heavy I dread getting it >out of the house. Help! That's a CTC-169. It is a good chassis, a bit old now. Was the picture good, and did everything else work well before it developed the problem? The good news is...you don't have to remove the entire set. The internal light box, 70 pounds or so, is removeable, so a technician can simply come to your house and remove the chassis, take it to the shop, repair it, and return it. This chassis can be a bear to troubleshoot if you don't have the pertinent service information available, though. Tom
From: Do Little2 on 4 Jul 2005 17:55 > On 4 Jul 2005 10:01:24 -0700, "pink" <dapinkie(a)gmail.com> wrote: > > >I have an RCA rear projection TV P46725SK - set is plugged in and was > >working fine until today when I tried to turn it on. I can hear a > >faint "click click click" from the vicinity of the flyback transformer > >when the power button is pressed. The power light blinks in unison > >with the clicking sound. I'd like to fix this puppy since I don't have > >the cash for a new TV right now and it's so heavy I dread getting it > >out of the house. Help! I remember a few CTC 169's with the sound output IC shorted. That could cause it to go into the shutdown mode. Suggestion, remove the power for the audio IC and see if the TV will start.
From: Art on 5 Jul 2005 06:56 +15 Volt supply diode, they go leaky and cause a whole slew of aggrivations. "Do Little2" <listed(a)space.com> wrote in message news:Jfiye.6074$EP2.28745(a)newscontent-01.sprint.ca... > >> On 4 Jul 2005 10:01:24 -0700, "pink" <dapinkie(a)gmail.com> wrote: >> >> >I have an RCA rear projection TV P46725SK - set is plugged in and was >> >working fine until today when I tried to turn it on. I can hear a >> >faint "click click click" from the vicinity of the flyback transformer >> >when the power button is pressed. The power light blinks in unison >> >with the clicking sound. I'd like to fix this puppy since I don't have >> >the cash for a new TV right now and it's so heavy I dread getting it >> >out of the house. Help! > > I remember a few CTC 169's with the sound output IC shorted. > That could cause it to go into the shutdown mode. Suggestion, > remove the power for the audio IC and see if the TV will start. > > >
From: pink on 5 Jul 2005 10:01 Tom MacIntyre wrote: > That's a CTC-169. It is a good chassis, a bit old now. Was the picture > good, and did everything else work well before it developed the > problem? Yes, it was working great, no sign of any problem, then yesterday it just didn't turn on. Come to think of it, we had a power outage the other day and I can't remember whether the last time we used the TV was before or after the outage. But we get power outages all the time in my area so I don't suspect that caused the problem.
From: cgrob on 5 Jul 2005 14:32
First thing remove the light box (presswood box all chassis & CRTs Mounted. If there is acover on fromt of box (convergence controls ) remove it. the HV divider block is behind it. Locate thr red wire off slightly by its self (goes to HV transformer) remove it Put into a dry class bottle (for insulation purposes) Now hook up speakers & attempt to turn on If sound returns You have a bad divider block, or a shorted anode lead to one of CRTs If sound returns plug wire from transformer back in & remove the red wires going to CRTs one at a time & try turning on. This will isolate problem to individual tubes If this checks contact me & I'll make further recomendations cgrob(a)corrcomm.net |