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Mastervolt Mass Sine Inverter 12/2000

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I have unfortunately found 2 burnt resistors and a faulty mosfet on the Mastervolt 12/2000 inverter pcb.

The resistor valve is unreadable namely R33 R34 which can be found adjacent the orange cap.

Would any member be able to supply the resistor band colours or ohm value for the resistors?

Mastervolt will not give out the detail.

Thank you in advance

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I can't help I'm afraid as my defective Mastervolt unit is a different model, but this post will "bump" your request back to the top of the recent post list so someone who has the same model might see it...

 

Not very helpful at Mastervolt, are they. :(

 

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not that this will help but my old maplin workmate would have been able to tell you the info

give rs components a ring worth a try

 

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3 minutes ago, Nut said:

not that this will help but my old maplin workmate would have been able to tell you the info

give rs components a ring worth a try

Why would anyone at either Maplins or RS know the schematic of a Mastervolt inverter?

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Bit of a long shot but there are two resisters you don't know the value of and from your pictures two heavy diodes, one power transistor, two smaller transistors one transformer etc. If you are lucky, sketching the circuit diagram (you'll get the pinouts of the active components off Google) will show symmetry and you can work out the missing values. Or pull the datasheet for the nearest big chip with lots of legs and see if "suggested applications" looks anything like your hand drawn schematic. 

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2 hours ago, WotEver said:

Why would anyone at either Maplins or RS know the schematic of a Mastervolt inverter?

nothing to do with schematics my old m8 mike would have known by the other components on the board and their values

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38 minutes ago, Nut said:

nothing to do with schematics my old m8 mike would have known by the other components on the board and their values

Absolute rubbish. 

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8 minutes ago, WotEver said:

Absolute rubbish. 

Don't hold back.

 

But yes it seems a very curious claim.

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10 minutes ago, MJG said:

Don't hold back.

 

But yes it seems a very curious claim.

You can tell my car has 18" wheels because it has a 2.7 litre diesel engine whilst the other car has 16" wheels because it has a 3 litre V6 petrol engine

  • Haha 2

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29 minutes ago, MJG said:

Don't hold back.

 

But yes it seems a very curious claim.

It’s complete nonsense.

 

If you were to sketch out the schematic then you could determine what the function of those components is (almost certainly drivers for the MOSFETS) and you’d possibly then have a ball-park for their values. But putting in a 1k resistor where Mastervolt used a 4k4 for example isn’t going to help you one bit when the magic smoke comes out of the replacement transistor. For instance, the unburned resistor alongside the charcoal appears to be 100r, but its ‘mirror’ alongside the transformer looks like 110r. They’re different for a reason. 

 

I’ve been googling images of the 12/2000 internals in the hope of finding those components but I’ve yet to see that same board. 

Edited by WotEver
  • Greenie 1

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22 minutes ago, Alan de Enfield said:

You can tell my car has 18" wheels because it has a 2.7 litre diesel engine whilst the other car has 16" wheels because it has a 3 litre V6 petrol engine

Mrs WotEver’s has 19” wheels. Is that because her car has a 5 litre engine or because it has twin superchargers?

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