Entertainment Center: TVs, Stereos, VCRs and DVDs - dang thing
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j.alcala
06-23-08, 03:12 PM
:wall: my t.v clunked out on me last night, just setting there and off it went. went to turn it on and had to hold the power button for it to stay on but once i chage the channel it turns back off. I have a RCA P52151WK. yea i know antique but cant live with out it! been good for 15 yrs,want 15 more. can anyone help?
HotinOKC
06-23-08, 03:49 PM
Power supply issue most likely, and parts will be hard to come by. Call a tech is the best option for you. I'm sure if you want it to last another 15, it's going to need some serious servicing.
WDIBAA
06-23-08, 07:04 PM
Try shunting the power switch contacts that are in series with the AC line with a paper clip and see if the problem disappears.
If it does, it's Radio Shack for you (unless you want the OEM switch, for appearance).
If it does, it's Radio Shack for you (unless you want the OEM switch, for appearance).
Rick Johnston
06-24-08, 04:50 AM
Bad idea! It's extremely dangerous to jump 120-volt AC with a paper clip!
That said ... Most TVs made in the last 15 years don't have the AC wired to the power switch.
Instead, the AC power is "always on" and the switch (and the remote) controls a relay that brings the TV out of standby mode. The relay could be mechanical or solid state. Also, there's some stuff on the 'net that points to a common failure of part #cr4118, which is a diode.
Either way, it's not a job for a DIYer unless you have experience in electronics repairs. As HotinOKC said, it's probably a job for a qualified tech.
That said ... Most TVs made in the last 15 years don't have the AC wired to the power switch.
Instead, the AC power is "always on" and the switch (and the remote) controls a relay that brings the TV out of standby mode. The relay could be mechanical or solid state. Also, there's some stuff on the 'net that points to a common failure of part #cr4118, which is a diode.
Either way, it's not a job for a DIYer unless you have experience in electronics repairs. As HotinOKC said, it's probably a job for a qualified tech.
WDIBAA
06-24-08, 08:01 AM
First engage brain, then research, then type.
I guess I'm still living in the 50's, when on/off switches actually opened the circuit.
Still, it sounded like an intermittent switch because it seemed to be pressure sensitive.
I guess I'm still living in the 50's, when on/off switches actually opened the circuit.
Still, it sounded like an intermittent switch because it seemed to be pressure sensitive.
Rick Johnston
06-24-08, 05:23 PM
I guess I'm still living in the 50's, when on/off switches actually opened the circuit.
... When "Bakelite" was King of Electronics? When radios and TVs had glass things called tubes? I was there. ;)
Mechanical relays were also around in the 50's. It surprised me after a 15-year career diversion from 1985 to 2000 to come back to electronics and find ... mechanical relays. I really thought that some sort of digital flops would have taken over by then. (Yeah, there are solid state relays, but they bleed current even when they're off.)
Almost everything is controlled by relays, which as you know are nothing more than switches. They still open and close circuits -- they just do it by remote control.
... When "Bakelite" was King of Electronics? When radios and TVs had glass things called tubes? I was there. ;)
Mechanical relays were also around in the 50's. It surprised me after a 15-year career diversion from 1985 to 2000 to come back to electronics and find ... mechanical relays. I really thought that some sort of digital flops would have taken over by then. (Yeah, there are solid state relays, but they bleed current even when they're off.)
Almost everything is controlled by relays, which as you know are nothing more than switches. They still open and close circuits -- they just do it by remote control.
WDIBAA
06-24-08, 06:14 PM
Sorry, I wasn't even born until the year 2000.
And it would take a geezer to remember Patience and Prudence. . .
And it would take a geezer to remember Patience and Prudence. . .