Question about Mitsubishi WS-55857 55" Rear Projection Television

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Power will ont come on

The green LED light on the front of my telivison, will only come on for a breaf moment and then go off.I can hear relay K9A50 energizing and de energizing. Can you direct me to the most likeliest problem?
Thanks Lennox.at mtrinisobo@yahoo.com

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Check pico fuses f9a04 and f9a05. They will prob be open. if so, repl conv ic's qty 2 stk392-570 . you will need pico fuses 5A heat compound, solder and iron. also check caps in dm module. if swollen, then repl. there's 4. 4700uf 50v i believe. Also check to see if there looks like something spilled on the circuit boards. if so, your picture tubes red/green or blue may be leaking coolant oily substance. If this is the case, try removing the pcb and cleaning with 97% alc. They make good cleaning sprays too. The boards may be shot. good luck to ya.

Rob/ex mits service tech

Posted on Jan 14, 2009

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I have a herritage t101, it displays the Ls error and has no drive whatsoever but was working a few month back


The SCR lower board is designed with diagnostic LED lights. The LED's are color coded according to
their specific function. Green indicates a properly operating treadmill; the green lights should always
be ON when power is supplied to the treadmill. Yellow indicates a treadmill function. Red indicates a
treadmill malfunction. Here is a list of each LED and what it signifies:
MOTOR (yellow) - The MOTOR LED illuminates when dc (direct current) voltage is sent to the drive
motor. The LED gets brighter when the dc output is increased.
RLC (yellow) - The RLC (R = Reactance / L = Inductance / C = Capacitance) LED illuminates when
the filtering system is properly working. The filtering system includes the capacitor and filter choke. If
there is a short in either component then the RLC light will not come on.
DN & UP (yellow) - The DN and UP LED lights tell us if the elevation DN and UP relays are
functioning properly. When the LED lights, it tells us that the relay has energized and is sending high
voltage (110vac or 220vac) to the elevation motor.
AC PWR (green) - The AC PWR (Alternating Current Power) illuminates when AC line voltage is
delivered to the treadmill. It then passes through the in-line fuse (110)/s(220) and lights the AC PWR
LED.
+12V (green) - When the proper AC voltage is delivered to the treadmill, passes through the in-line
fuse/s, through the full wave bridge rectifier (changes AC to DC), through the transformer (steps down
DC to +12vdc) then the +12V LED lights.
This the board LED, who control the signal for Main Motor+Elevation Motor. You must see, the LED DN+ UP( both will be Lit) in any position down or Up.
2) The RELAY board is designed with diagnostic LED lights. The LED's are color coded according to
their specific function. Green indicates a properly operating treadmill; the green lights should always
be ON when power is supplied to the treadmill. Yellow indicates a treadmill function. Red indicates a
treadmill malfunction. Here is a list of each LED and what it signifies:
AC PWR (green) - The AC PWR (Alternating Current Power) illuminates when AC line voltage is
delivered to the treadmill. It then passes through the in-line fuse (110)/s(220) and lights the AC PWR
LED.
VDC (green) - The VDC LED will light when it receives DC voltage from the DC power supply.
DN & UP (yellow) - The DN and UP LED lights tell us if the elevation DN and UP relays are
functioning properly. When the LED lights, it tells us that the relay has energized and is sending high
voltage (110vac or 220vac) to the elevation motor.
UPSW (green) - This LED will illuminate when the low voltage dc is delivered from the upper display
board to the elevation UP relay. This low voltage dc is what energizes the coil of the relay.
DNSW (green) - This LED will illuminate when the low voltage dc is delivered from the upper display
board to the elevation DOWN relay. This low voltage dc is what energizes the coil of the relay.
BELTSW (green) - This LED will illuminate when the low voltage dc is delivered from the upper
display board to the belt (motor start) relay. This low voltage dc is what energizes the coil of the relay.
SPD (yellow) - The SPD LED flashes on and off (relative to speed) when the speed sensor is
operating properly.
PWM (yellow) - This LED will light when the upper board is sending a speed signal to the PWM.
Both the PWM LED and BELTSW LED must be lit for belt movement.
Finally this this Relay Board, the Each Led will be Lit, for any Relai control for DN down, or UP elevation motor. Use the contact cleaner, you can find it in R .Shack.
see the diagram attached.
God bless you1_14_2013_9_25_21_pm.png

Jan 14, 2013 | Exercise & Fitness

1 Answer

I have a reebok crosswalk rt 5.0 treadmill. I can calibrate the incline and it goes up and down. however when you press the button to raise the incline the incline number will change but the machine does...


Step 1:

see this details and proceed according. God bless you

The SCR lower board is designed with diagnostic LED lights. The LED's are color coded according to

their specific function. Green indicates a properly operating treadmill; the green lights should always

be ON when power is supplied to the treadmill. Yellow indicates a treadmill function. Red indicates a

treadmill malfunction. Here is a list of each LED and what it signifies:

MOTOR (yellow) - The MOTOR LED illuminates when dc (direct current) voltage is sent to the drive

motor. The LED gets brighter when the dc output is increased.

RLC (yellow) - The RLC (R = Reactance / L = Inductance / C = Capacitance) LED illuminates when

the filtering system is properly working. The filtering system includes the capacitor and filter choke. If

there is a short in either component then the RLC light will not come on.

DN & UP (yellow) - The DN and UP LED lights tell us if the elevation DN and UP relays are

functioning properly. When the LED lights, it tells us that the relay has energized and is sending high

voltage (110vac or 220vac) to the elevation motor.

AC PWR (green) - The AC PWR (Alternating Current Power) illuminates when AC line voltage is

delivered to the treadmill. It then passes through the in-line fuse (110)/s(220) and lights the AC PWR

LED.

+12V (green) - When the proper AC voltage is delivered to the treadmill, passes through the in-line

fuse/s, through the full wave bridge rectifier (changes AC to DC), through the transformer (steps down

Step 2:

This the board LED, who control the DC to +12vdc) then the +12V LED lights.
signal for Main Motor+Elevation Motor. You must see, the LED DN+ UP( both will be Lit) in any position down or Up.

2) The RELAY board is designed with diagnostic LED lights. The LED's are color coded according to

their specific function. Green indicates a properly operating treadmill; the green lights should always

be ON when power is supplied to the treadmill. Yellow indicates a treadmill function. Red indicates a

treadmill malfunction. Here is a list of each LED and what it signifies:

AC PWR (green) - The AC PWR (Alternating Current Power) illuminates when AC line voltage is

delivered to the treadmill. It then passes through the in-line fuse (110)/s(220) and lights the AC PWR

LED.

VDC (green) - The VDC LED will light when it receives DC voltage from the DC power supply.

DN & UP (yellow) - The DN and UP LED lights tell us if the elevation DN and UP relays are

functioning properly. When the LED lights, it tells us that the relay has energized and is sending high

voltage (110vac or 220vac) to the elevation motor.

UPSW (green) - This LED will illuminate when the low voltage dc is delivered from the upper display

board to the elevation UP relay. This low voltage dc is what energizes the coil of the relay.

DNSW (green) - This LED will illuminate when the low voltage dc is delivered from the upper display

board to the elevation DOWN relay. This low voltage dc is what energizes the coil of the relay.

BELTSW (green) - This LED will illuminate when the low voltage dc is delivered from the upper

display board to the belt (motor start) relay. This low voltage dc is what energizes the coil of the relay.

SPD (yellow) - The SPD LED flashes on and off (relative to speed) when the speed sensor is

operating properly.

PWM (yellow) - This LED will light when the upper board is sending a speed signal to the PWM.

Both the PWM LED and BELTSW LED must be lit for belt movement.
Finally this this Relay Board, the Each Led will be Lit, for any Relai control for DN down, or UP for elevation Motor. You must clean contact of the Relay with Special Spray(Radio Schack).

With this you must fix it.

Jan 07, 2013 | Reebok Exercise & Fitness

1 Answer

No sound/picture and red power light always on (Hitachi 43FDX15B)


When u turn the tv on,u hear alot of clicking?That mean the Ballast that help the projection bulb to work is dead.Change the Ballast,might as well change the bulb too.U don't know what is the condition of the projection bulb in.

May 29, 2010 | Hitachi 43FDX15B 43" Rear Projection...

1 Answer

60SDX88B. No video, No sound. DP06 Protection


not a solution but i have a 50gx30b doing something similar, no picture no sound, 3 green leds are lit up on the main board and then one red led lit up also on main board, front panel red led stays on for about 30 -50 seconds and then it all shuts off, I then have to unplug and replug to get the same results.

Mar 03, 2010 | Hitachi 60SDX88B 60" Rear Projection...

1 Answer

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I repair these power supplies, if you need further assistance write to jah2mil@hotmail.com

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i would also replace the caps in the DM section
http://www.jeremyburns.com/Mitsubishi-Green-Blinking-Light-Fix.pdf

http://chrisandnat.com/projects/blinkingtv/blink.htm

Dec 19, 2007 | Mitsubishi WS-55807 TV

1 Answer

Relays click. That's about it


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Nov 20, 2007 | SVA-USA HD4208TIIIBU 42 in. HD-Ready...

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