Question about Hitachi 53UDX10B 53" Rear Projection Television

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No sign of power any where, 5 amp fuse replaced

What is the next step for no power, no sound, no picture, no lights on front panel or on circuitboards?

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  • 319 Answers

Find Circuit Q777 (or equivalent) on the main power board (right hand side if you are looking at it from the back. its a voltage regulator most likely.

Part: Panasonic C5314
Partsstore.com has the part. its like 35 bucks shipped

Posted on Feb 27, 2009

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6ya6ya
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Posted on Jan 02, 2017

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How to find fuse boxs


FUSE PANEL LOCATION
The fuse panel is located in the engine compartment. A label on the inside of the cover lists the fuse amperage and circuits protected.
volvo 850 fuses fuse panel layout service repair manual
FUSE PANEL IDENTIFICATION
Fig. 1: Fuse Panel Identification
Courtesy of Volvo Cars of North America.
WARNING: Always disconnect battery ground cable before servicing "high-current fuses. It is recommended that "high-current" fuses be replaced by a qualified technician.
* 1 - 15 Amp
Fuel Injection, Distributor Ignition, Automatic Gearbox
* 2 - 15 Amp
Fuel Pump, Alarm System
* 3 - 10 Amp
Courtesy Lights, Oil Level Sensor
* 4 - Not Used (1993-95)
* 4 - 10 Amp (1996)
Electronic Start Inhibitor (Immobilizer)
* 5 - 30 Amp
ECC Blower (Speed 4)
* 6 - 25 Amp
Central Locking System, Alarm
* 7 - 15 Amp
Audio System (Amplifier)
* 8 - 25 Amp (1993-95)
Power Antenna, Trailer Connector
* 8 - 40 Amp (1996)
Electronic Start Inhibitor (Immobilizer)
* 9 - 30 Amp
ABS, Traction Control System
* 10 - Not Used (1993-95)
* 10 - 15 Amp (1996)
Heated Rear Seat (If Equipped)
* 11 - 30 Amp
Heated Rear Window & Side Mirrors
* 12 - 10 Amp
Brake Lights
* 13 - 15 Amp
Hazard Flashers, Headlight Flashers, Alarm
* 14 - 30 Amp
ABS, Traction Control System
* 15 - 10 Amp (1993-95)
Audio System, Courtesy Lights, Door Open Light, Trunk Light, Glove Box Light, Remote Control Central Locking System,
Oil Level Sensor, Seat Belt Reminder
* 15 - 10 Amp (1996)
Audio System, Courtesy Lights, Door Open Light, Trunk Light, Glove Box Light, Remote Control Central Locking System,
Oil Level Sensor, Seat Belt Reminder, Data Link Connector
* 16 - 30 Amp (1993-95) Accessories
* 16 - 30 Amp (1996)
Power Antenna, Trailer Connector, Accessories
* 17 - 10 Amp
Key Reminder
* 18 - 25 Amp (1993-95)
Heated Front Seats, Power Mirrors
* 18 - 15 Amp (1996) Front Fog Lamps
* 19 - 15 Amp
Left High Beam Headlight
* 20 - 15 Amp
Right High Beam Headlight, High Beam Indicator
* 21 - 15 Amp
Left Low Beam Headlight
* 22 - 15 Amp
Right Low Beam Headlight
* 23 - 10 Amp
Left Parking Light, License Light
* 24 - 10 Amp
Right Parking Light, Bulb Failure Warning Sensor
* 25 - 10 Amp
Rear Fog Lamps, Fog Lamp Indicator
* 26 - Not Used (1993-95)
* 26 - 25 Amp (1996)
Heated Front Seats, Power Mirrors
* 27 - 15 Amp
Back-Up Lights, Turn Signals
* 28 - 10 Amp
Cruise Control, Heated Rear Window, Seat Belt Reminder Light, Shiftlock, Bulb Failure Warning Sensor, Heated Rear Seat
* 29 - 15 Amp
ABS, Traction Control System
* 30 - 10 Amp
Cigarette Lighter
* 31 - 25 Amp
ECC, ECC Blower (Speeds 1-3)
* 32 - 10 Amp
Audio System, Remote Controlled Central Locking System
* 33 - 15 Amp (1993-95)
Power Seats, OBD Test Socket, Tailgate Washer/Wipe (Wagon)
* 33 - 15 Amp (1996)
Power Seats, Tailgate Washer/Wipe (Wagon)
* 34 - 25 Amp
Windshield Wiper/Washer, Horn, Headlight Washer/Wiper
* 35 - 10 Amp
Instrument Lights, Sun Roof, Traction Control System
* 36 - Not Used
* 37 - Circuit Breaker
Power Windows, Power Sun Roof
* 38 - Not Used
* 39 - Circuit Breaker
Drivers Power Seat
* 40 - Circuit Breaker
Passengers Power Seat
RELAY PANEL LOCATION
The relay panel is located at the left corner of the instrument panel.
i copied this off a volvo site Hope this helps

Oct 10, 2016 | Volvo 850 Cars & Trucks

2 Answers

Amp keeps blowing fuses


Blowing fuses, was caused by many thing.
Short of rectifier,resistor,elco,tube heater,tube pin, and also trafo itself (primary or secondary winding). It must check step by step.
CAUTION :
THIS IS HIGH VOLTAGE AREA.
RISK OF ELECTRIC SHOCK THAT CAN KILL.
DON'T DO THIS IF YOU ARE NOT TECHNICIAN OR NOT FAMILIAR WITH VACUM TUBE CIRCUIT. THE CIRCUIT MAY STILL CONTAINS ELECTRIC SHOCK EVEN IF IF THE AMP IS NOT POWER PLUGGED.


The simple steps (see picture) are:
  1. Disconnect all connection from secondary of power trafo (PLV,PDCH,PACH and PHV).
    Power ON the amp. If fuse is not blowing,trafo is good.
  2. Power OFF the amp. Unplug the cord.
    Connect PLV1-PLV2-PLV3 (this are Bias voltage,+/-15VDC and Backlight PCB voltage) to power trafo.Power ON the amp. If fuse is not blowing,PLV circuit is good.If fuse blowing,there are parts is damage (dioda,elco,7815/7915,resistor) in this PLV circuit.
  3. If step 2 is good,go to next step.
    Power OFF the amp. Unplug the cord.
    With PLV circuit stay connected,connect PDCH 1-2 and PACH 1-2 to power trafo. Power ON the amp.
    If fuse is not blowing,PDCH and PACH circuit is good and all tubes heater/filaments are lights after a few seconds.
    If fuse blowing,there are parts is damage (dioda,elco,tube heater pins) in this PDCH/PACH circuit.
  4. If step 3 is good,go to next step.
    Power OFF the amp. Unplug the cord.
    With PLV,PDCH,PACH circuit stay connected,connect PHV 1-2 to power trafo.
    Power ON the amp. CAUTION: HIGH VOLTAGE AREA is ON.
    If fuse is not blowing,PHV circuit is good.
    If fuse blowing,there are parts is damage (dioda,elco,tube pins) in this PHV circuit.
.amp-keeps-blowing-fuses-01sk4vtrndbaaguwe2brflsj-5-0.jpg
Notes:
  • Steps had to be done sequentially from 1 to 4, not upside down.
  • If tube/heater pin is short,it can't be repair. The tube must be replacing.
  • PDCH circuit is voltage for V1-2-3-4 heater/filaments.
  • PACH circuit is voltage for V5-6-7 heater/filaments.
  • Always replace fuse with same type.

amp-keeps-blowing-fuses-01sk4vtrndbaaguwe2brflsj-5-1.jpg

Oct 02, 2015 | Peavey 6505 Plus 120W Guitar Amp Head

1 Answer

1994 saturn


cc586a3b-2b8a-4401-8de1-6433fe458f03.jpg56ba0348-dd82-4a98-8e39-7e6c5867908d.jpg4b456812-9396-483c-b510-76c31f63a06f.jpg1044231d-f68b-41dc-98a0-091271efc103.jpgActually the yellow wire is the key on (ACC) power. Above in the first picture is the wiring diagram which as you can see the wire I marked with the yellow arrow (the yellow wire) goes through the ignition switch and only supplies power with the key on. The constant power wire is going to be the orange wire (I marked that wire with a orange arrow). I continued to the next picture below the first picture marking the same wires and colors from the first picture to the radio. The fuse for the yellow wire is in the fuse panel inside the vehicle (see location in the 3rd picture and marked the fuse panel with a red arrow). and will be the one marked radio either on the cover or the panel itself but should be a 7.5 amp fuse. Now the fuse for the orange or the wire that should be constant power is a 5 amp fuse and will be marked "Chime". Now in the last picture (bottom right) is the wiring diagram for the lighter which is kind of a separate circuit. It does have one fuse in common but that fuse feeds power to the fuse panel inside but if that one was out you wouldn't have tail lights, parking lights and a number of other things so I doubt its the main 30 amp maxi fuse in the fuse panel under the hood. The fuse for the lighter as far as a dedicated fuse for the lighter is in the fuse panel inside the vehicle and will be marked "lock" and is a 20 amp fuse. Sorry I don't have a fuse panel diagram as far as the fuse layout but I hope this helps you.

May 02, 2013 | Car Audio & Video

1 Answer

Front panel wiring diagram ie power switch reset switch etc


HP Support > Compaq Presario SR5501F > Motherboard Specifications,

http://h10025.www1.hp.com/ewfrf/wc/document?docname=c01237538&tmp_task=prodinfoCategory&lc=en&dlc=en&cc=us&lang=en&product=3740354

The motherboard is made by ECS for HP/Compaq
ECS model number is MCP61PM-HM
HP/Compaq's name is Iris 8.

There is no wiring diagram per se to give you.
I'll have to detail the wiring connections step by step for you.
This may be a little lengthy.

On the link above you are looking at a photo of your motherboard.
There is also an illustration available.
I would like you to copy, and save them both.

Using this method you will be able to enlarge them for further clarity, of the connections to the motherboard.

Right-click on the motherboard photo. Left-click on Save Image As, in the list.
In the Save Image window that comes up, you will see the heading File name:
To the right of File name: will be c01237541.

Unless you want to search for c01237541 you may wish to do this:

Put your mouse cursor after the 1 in c01237541.
Left-click twice.
Make one space with your spacebar.

Type Compaq Presario SR5501F Mobo photo.
(Mobo stands for MOtherBOard)

You want this photo to go to your My Pictures folder.
(Windows XP. Different for Vista)
At the top of the Save Image window is the heading - Save in:
In the box to the right you should see - My Pictures

If you do Not you will have to change the destination.

Left-click on the blue down arrow to the right of the box.
In the list, left-click on - My Documents, then left-click on - My Pictures.
Now go to the bottom right of the Save Image window, and left-click on Save.

In the link, scrolling down you will see the heading - Motherboard layout
Left-click on the + sign next to Motherboard layout.
Copy and save it as you did for the motherboard photo.

In the File name: box type - Compaq Presario SR5501F Mobo Illustration.

Now all you have to do is go to your My Pictures folder (Start>My Pictures), and double-click on the photo, or illustration.
Left-click on the Zoom In icon at the bottom of the window to enlarge.
(+ sign in a magnifying glass icon)

Wiring Connections to the Motherboard:

A) Front Panel header: (Panel 1)

The Front Panel, is the plastic front of your computer where the Power On button, HarDDrive LED light, and Power On LED light is located.

The Front Panel header is the connections, or pins, on the motherboard, where the cables (Wires) go to from the Front Panel.

On the motherboard illustration it is marked as Panel 1.
(Down in the bottom right corner)

On your motherboard, Panel 1 (Front Panel header) is Black in color.
As you can see it is a rectangular block, and is placed vertically.
Has 2 columns of pins.
5 in the left column, 4 in the right column.

The Left column is numbered Odd.
Starting at the Top going down, Pins 1, 3, 5, 7, and 9

The Right column is numbered Evenly.
Starting at the top going down, Pins 2, 4, 6, and 8.

Pins 1 and 3 are for the HarDDrive LED light.
(HDD activity LED)
Pin 1 is for the Positive connection ( + )

Pins 5 and 7 are for the Reset switch.
Pin 7 is for the Positive connection. ( + )

Pin 9 is reserved, and may not be used.

Pins 2 and 4 are for the Message LED light. (LED = Light Emitting Diode)
Power On LED light.

Pins 6 and 8 are for the Power On switch.
There is No Pin 10.

If the cables (Wires) are not marked coming from the Front Panel, you will have to remove the Front Panel, and trace where they go.

You will be able to physically see where wires go to the Power On switch, Power On LED light, HarDDrive activity LED

Sep 21, 2011 | HP Compaq d530 SFF PC Desktop

1 Answer

50" vizio hdtv will not turn on and light in front not on


If TV is completely dead, no green/orange light, no any clicking sounds after you unplug it from the wall outlet and plug it back in - it is a problem with Power Board. Best case scenario - It's just a fuse that needed to be replaced. You have to remove back cover and locate fuses (1-4) on the board that power cord is attached to. You have to use multimeter to check it. If fuses are OK - next step is to replace whole power board. But before you do anything - make sure you got power out of the wall outlet and/or your power strip is in working condition.

Mar 10, 2010 | Vizio Televison & Video

2 Answers

No picture


you have the ATC311 chassis. do this proceedure and you can track down where the problem is. let me know if you need more assistance. i can also post a link where you can get the training manual at a cheap cost emailed to you if you would like a copy.
5. Apply AC power and press power button.
6. If LED turns on and then off, disconnect J11501 (Audio CBA) and press power
button again. If power LED comes on and stays on suspect Audio CBA. If LED
still flashes or does not light go to step 7.
7. Disconnect J26903 (AV IN CBA) and press power button again. If power LED
comes on and stays on suspect AV IN CBA. If LED still flashes or does not
light go to next step.
8. Disconnect J19500 (Convergence CBA) and press power button again. If
power LED comes on and stays on troubleshoot the Convergence CBA. If
LED still flashes or does not light go to next step.

9. Disconnect J14801 (Deflection CBA) and press power button again. If power
LED comes on and stays on suspect Deflection CBA. If LED still flashes or
does not light suspect DM2 module.

Jun 08, 2008 | RCA HD61LPW42 61" Rear Projection HDTV

2 Answers

Picture and sound gone


your fuses may have blown off.

open the back panel and check all the fuses. There are a bunch of fuses in there, my tv has 5 altogether.

I hope this is the problem.

Feb 24, 2008 | Televison & Video

4 Answers

Can't get full power on


I have this exact same issue; search engine took me here. I have been experiencing this problem for about a year now. When you power on, the RED standby light goes out, the power light turned GREEN, you might hear a small pop sound, then the RED standby light goes back on. YOU HAVE BLOWN A FUSE. My problem is this is occuring much more frequently now and I'm going through fused like crazy. So I'm looking for a long term solution. To replace the fuse, turn off the standby power switch on the front. Unplug the power cable. Open the back panel. All logic and power modules are on the bottom of the cabinet. Therer is a large power module in the middle. In the middle of this module are 3 fuses. The one that typically blows is the one in the middle. It's a 5 amp fuse, but double check the rating before replacing. Good luck, Mark

Aug 05, 2007 | Pioneer SD-643HD5 64" Rear Projection...

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