Mangavox 50ME314V/F7 "Funai junk"

[heavymachines]

Alright guys this tv is totally yuck. Anyways it won't turn on or do anything. power supply seems to be working but hard to test anything this thing uses jump bridges as test points. Where the hell do i begin on this nasty tv lol.



It has standby and other voltages and is not sending voltages to led. Main appears not to respond at all to power button presses. Pics coming soon

[heavymachines]

Re: Mangavox 50ME314V/F7 "Funai junk"

pics

[CapLeaker]

Re: Mangavox 50ME314V/F7 "Funai junk"

Does the PSU make STBY power?see if the main board sends PSON and BLon...

[heavymachines]

Re: Mangavox 50ME314V/F7 "Funai junk"

Does the PSU make STBY power?see if the main board sends PSON and BLon...

Ps_on is only 1.011v

bl_sw is .001 there is no bl_on.

[CapLeaker]

Re: Mangavox 50ME314V/F7 "Funai junk"

That is not enough voltage to turn the PSU on. So I think you need a new main board.

[heavymachines]

Re: Mangavox 50ME314V/F7 "Funai junk"

Any more tests i can do to confirm that is all? How do you force the power supply on this thing?

[CapLeaker]

Re: Mangavox 50ME314V/F7 "Funai junk"

With the main board unhooked from the PSU, put PSON and BLon through a 1k resistor to STBY voltage. Plug the PSU in and all the power rails shall be on and the backlight too.

[heavymachines]

Re: Mangavox 50ME314V/F7 "Funai junk"

With the main board unhooked from the PSU, put PSON and BLon through a 1k resistor to STBY voltage. Plug the PSU in and all the power rails shall be on and the backlight too.

LOL i cannot find standby and nothing appears to be on when main disconnected
this tv is just wow lol



can u see it in pic?

[CapLeaker]

Re: Mangavox 50ME314V/F7 "Funai junk"

Not tonight on my IPad... to hard to see anything on that lil thing. However, see if you an find a service manual and upload that. These are also rebranded Philips and Emerson.

[budm]

Re: Mangavox 50ME314V/F7 "Funai junk"

Look at those jumpers close to the black connector that goes to the main board, you will see printing such as: ALL 3.3V, PONH2, AMP+13V (about 8V in standby), PON21V (about 12V in standby), PROTECT3, BL-SW (BL-ON), BL-ADJ (DIMMING), ADIM3 (DIMING), OVP3, UVLO3, VLED3, LED+40V, etc.
Also look at the bottom side of the board.
There are two white stickers that I cannot read the printing on them, please tell me what they are.
The blank PCB is P/N BA4GU5F01 02.
Is there chassis number printed on the model number sticker on the back of the TV?

[heavymachines]

Re: Mangavox 50ME314V/F7 "Funai junk"

panel sticker is....

P/N: U4AUOXH

S/N: E7256170 063388


power board stickers are as follows

BARCODE
14112P01A
A4GU6-MPW
E7255590


STICKER
A4GU6MPW C
7255590

[heavymachines]

Re: Mangavox 50ME314V/F7 "Funai junk"

Well here is a kicker... With main disconnected i cannot find any voltages worth recording.

However with main connected i have red led on at ir board and have all voltages come up except none on led output side of power board.

amp13+V is 12.22 v and does not change with main connected and power button presses or remote has no effect.

with main disconnected nothing worth recording.

[budm]

Re: Mangavox 50ME314V/F7 "Funai junk"

I do not need the LCD panel sticker.

So is there chassis number on the model sticker? I.E. FL?????
Can we see the picture of model number sticker?

Power supply/led driver board:
http://www.shopjimmy.com/magnavox-a4...me314v-f7.htm#

[heavymachines]

Re: Mangavox 50ME314V/F7 "Funai junk"

I do not need the LCD panel sticker.

So is there chassis number on the model sticker? I.E. FL?????
Can we see the picture of model number sticker?

Power supply/led driver board:
http://www.shopjimmy.com/magnavox-a4...me314v-f7.htm#

Not that i see, but here i took pics of everything i could find on this beast.


oops just noticed some pics are flipped but readable.



i included main stickers as well in case we need it later

[CapLeaker]

Re: Mangavox 50ME314V/F7 "Funai junk"

yeah... when the main board is disconnected from the psu, there should be then only the stby voltage available from the PSU, nothing else. I can't see any FL chassis number on these pics. I know, I've uploaded a service manual for a 50me313v/f7, which is a previous model, on here some where. I wonder if the pinout on the PSU would be the same or not? I know the PSU looks different, but may be worth a shot.

[budm]

Re: Mangavox 50ME314V/F7 "Funai junk"

So with all the boards connected, what DCV do you have on these jumpers?
ALL 3.3V =
PON-H2 =
PON21V =
PROTECT3 =
BL-SW (BL-ON) =

[heavymachines]

Re: Mangavox 50ME314V/F7 "Funai junk"

As follows
ALL 3.3V = 3.27v
PON-H2 = 1.069v
PON21V = 21.24v
PROTECT3 = .163
BL-SW (BL-ON)= .001

[budm]

Re: Mangavox 50ME314V/F7 "Funai junk"

As follows
ALL 3.3V = 3.27v
PON-H2 = 1.069v
PON21V = 21.24v
PROTECT3 = .163
BL-SW (BL-ON)= .001

OK, so the PONH2) PS-ON is fine otherwise you will not have the 21V for the PON21, and about 12V for PON+13V.
But you do not have the BL-SW (BL-ON).

[heavymachines]

Re: Mangavox 50ME314V/F7 "Funai junk"

OK, so the PONH2) PS-ON is fine otherwise you will not have the 21V for the PON21, and about 12V for PON+13V.
But you do not have the BL-SW (BL-ON).

is that controlled by main or something in power supply?

[budm]

Re: Mangavox 50ME314V/F7 "Funai junk"

Main board.