On Saturday, January 16, 2016 at 3:03:05 PM UTC-5, John-Del wrote:
On Tuesday, October 22, 2013 at 4:08:19 PM UTC-4, SharpShooter wrote:
Trying to fix a 32" RCA TV DVD Combo. model # RLCDV3282A-B.

When I plug in the TV does not turn ON. However a dim power light (RED led) comes On.

No clicking sound. No buzzing. Nothing. Plain and simply dead except for the dim POWER light.

I am unable to locate specifically the bad component.

Checked most capacitors. No visible signs of damage or bulge.

Across the main 450v 68uF capacitor I get 90v DC. Mains has steady 110V AC.

Output connectors of the main power supply board gives 24, 12 and 5 v DC. No problems.

However, the DVD board is not getting its 5 volt DC which actually comes from the main-board that has the graphic ic and all other video ouput connectors like HDMI etc.

I am unable to trace where/why the 5 volts from this board is NOT coming to the connector. There is another set of long connector on this main board which receives power from the power supply and that shows the relevant 12v and 5 v Dc at that point.

So in short, the main-graphic board that also powers the dvd is not giving 5v dc output to the DVD player - which i believe also powers the switches - and thus the TV is perhaps frozen in standby mode ( I am not sure of that) No remote so I cannot take it out of the standby mode - also ALL the switches are non responsive.

Any help will be appreciated.

It seems unlikely that you're getting only 90VDC across the PFC capacitor.. If that's what you're getting, replace that cap. Ordinarily, you should be getting about 160VDC across that with a 120VAC in standby, and 325 to 375 with the TV on.

It also seems unlikely that you'd be getting normal secondary voltages if there was only 90V on the PFC cap, but anything is possible I guess.

The 5V for the DVD is a switched source and is not a pertinent test point for checking a dead TV. Most likely it's not sourced from the 5V standby but the 12V run through an on board dc-dc converter.

The first course of action is to verify the voltage on the PFC cap as it should never be anything less than 160. If it is, solve that first.

If it still doesn't start, check the main IC for runaway heat on plug in. These boards often get whacked through the HDMI ports and the main IC will short and get hot in a hurry. If that's what you're getting, it's easier to replace the board.

If not, good chance the firmware is corrupt. Unfortunately, RCA (whoever it is now) will not send you the .bin file. Might be an eeprom available on ebay.

I second that.

450v 68uF capacitor I get 90v DC.

That sounds fishy. I would snoop around that area looking for flat caps , burned resisters or open fuse.

I have 5 cents that says its a flat cap.

Also check for cold solder around the switching transformers. They are heavy and can wiggle lose if the TV is next to a home theater sub bass speaker , vibration.