RCA L26WD26DA - Pwr button on, LED flashes red & grn 13 times, screen comes on for 3 sec then go's off (this cycle happens 3 times and pwr go's off).

The power supply for that model is real cheap, around $14. Here is a link to a vendor Panasonic ETX2MM704MGA NPX704MGA 1 Sub Power Supply

If you need further help, I’m available over the phone at https://www.6ya.com/expert/jason_70466cb634a57543

Interior Fuses

The fuse panel is on the lower instrument panel just to
the left of the steering column.

1 30 Amp Green Audio Amp (B+)

2 15 Amp Blue Sunroof (B+)

3 10 Amp Red Htd Mirror (EBL)

4 20 Amp Yellow Rr Pwr Out (B+)

5 10 Amp Red Rr HVAC (R/O)

6 10 Amp Red OCM (B+)

7 20 Amp Yellow Door Locks (B+)

8 15 Amp Blue Steer Col Lock (B+)

9 20 Amp Yellow Pwr Outlet (B+)

10 10 Amp Red Ign Run Only Out (R/O)

11 Spare

12 10 Amp Red Mem. Sw, Courtesy Lamp

(B+)

13 Spare

14 20 Amp Yellow Cigar Ltr (R/A)
15 10 Amp Red Tire Press Mon (R/O)

16 10 Amp Red SCM, Cluster OBD (B+)

17 15 Amp Blue Flipper Glass (B+)

19 10 Amp Red OCM (R/S)

20 10 Amp Red WCM, Cluster (R/S)

21 15 Amp Blue Autowipe (Accy Delay)

22 15 Amp Blue Rear Wiper (B+)

24 10 Amp Red PDC, FCM, A580 (R/S)

25 10 Amp Red ABS, Trans. Case Switch

(R/S)

CB1 20 Amp Cycle -Wipers (B+)

CB2 20 Amp Non - Cycle Seats (B+)
CB3 20 Amp Non - Cycle Windows (Delay)

- the colors of the wires (can differ, depends on the case type):

• Green(+ is the colored wire)-White(-) --> POWER LED (GREEN light)
• Red-Black -> POWER SWITCH
• Red-White -> HDD LED (RED light)
• Blue-White -> RESET
• Red-Black (4 pins wide)-> SPEAKER

Sorry you are having trouble.
Led's have a + and a - side.
With a magnifying glass you should be able to see where each one goes on the board. Start with pwr s/w. when you have it on the right pins then you can push the button and turn it on. I have done with with a screwdriver and quickly touching two pins at a time until it comes on.
Next the power LED. This one should be on all the time.
Last id hdd LED. This one will only be on when HDD is active and reading or writing.
The connector you are looking for is normally in the right hand corner opposite the power supply and has all the wires from the case going to it.

check the supply at horizontal driver trans former ,if voltage is correct at ho/driver trasistor ...then check allthe fusible resistances from power supply,,,if tv is taking h/oscillation for awhile ,,give more screen control in lot,,, & see for a horizontal line ,,,before tv becomes off,,, if so vertical ic problem...

the power switch is on the 3 and 4 pins....the 7 and 8 pin are the reset pins. Trying it on wrong pins just won't startup the board but won't short circuit anything.

Please try the following, if issue persists please contact the support team:

To reset the box to defaults, please do the following:
* Unplug the power cord.
* Hold the reset button on the back of the box.
* Plug in the power cord while holding the button until the pwr/sec led is steady red.
* Leave the reset button for 3 seconds.
* Press the reset button again for 10 seconds until the pwr/sec led starts blinking red.
* Reconfigure your box and install certs.

There's a fan in the optical block (light engine) You may also have either an intermittent fan or a bad connection from the fan(s)

michtech

Good Day, Butchilee,
Sounds like you have patience, hope your TV has some trace left. Hit recommends that you replace the originals with
STK-392-150's and the resistors. Replace said items with care then back down on the screen/ focus controls and gradually bring the screens up until you have pic, adjust focus. Go into customer menu and adjust color down, set brightness to 50%, contrast to 100%. Then go back and adjust the screens for proper, black/white, tracking. AND It's best to double check the soldering connections.
Good Luck, Big Irish.