Bush LE40GB01-C

[llonen]

Does anyone have the schematic for the megmeet psu board fitted in this set part number mp123-24tf.

Thanking you in advance


Regards Mark

[jondoe]

Re: Bush LE40GB01-C

It's not ideal, but you can zoom in well enough via this site.

https://www.scribd.com/doc/309641256...de-Alimentacao

Attached is a single image, if it helps.

[llonen]

Re: Bush LE40GB01-C

Many thanks

[llonen]

Re: Bush LE40GB01-C

So I might need some input on this one, I was simply going to replace the board as I have already spent more time than I would otherwise allocate however availability for this board seems to be a problem in the UK at least.

The set itself has no standby illumination

Visual inspection of the board has not shown up any obviously defective joints

No obvious failed components

Semi conductors tested no apparent shorted devices (5 volts applied diode test, fluke 77)

No obvious esr problems (ooc tested with scope and function generator)

On power test shows the following


hot side

C11 C12 filter caps 320 volts


cold side

vsb - 5 volts
5 volt - missing
12 volt - missing
24 volt - missing

with main signal av board connected I get a tick from the T1

[llonen]

Re: Bush LE40GB01-C

anyone or shall I start a new thread

[dick_barton]

Re: Bush LE40GB01-C

It's Christmas holidays so probably not many people on the Forum
Check the DC voltage at L14, L15 & L16 and post them.

[ReeceyBurger123]

Re: Bush LE40GB01-C

it's christmas holidays so probably not many people on the forum
check the dc voltage at l14, l15 & l16 and post them.

+1 have a good one DB

[vinceroger69]

Re: Bush LE40GB01-C

if you us a 1k resistor between vsb 5v and ps.on pin do all the other voltages now test ok?