Hello Chris / Coulomb,

You guys are very informed @ experienced - I have a 5k/4kwatt inverter - Synerji (which reportedly is an Aspex or Voltronic clone) which is has the same main board as per photos Chris posted a few days ago. Small town 65km away from Bloemfontein, Free State, South Africa.

We had overloaded heavy duty low bed truck take short cut through residential area - the very heavy unit (truck) onto the loaded back had high exhaust which cut overhead power lines  with lots of flashing and explosions and cable arcing and weaving onto fences and road surface. Many residents in street reported damage to electrical equipment in homes and we though we were OK - but disaster struck us yesterday:

• the AC input live terminal on the inverter motherboard arced/flashed/overheated causing terminal to melt loose from pc board.
• Electrolytic cap c116, diodes D54 & 67 & 70 popped/cracked (right rear side of main board,
• as well as components on underside of mother board ZD3 & 4 and C56 popped/burned.
• main board has following part numbers on it P/N 1100001705220101 (yellow stick on label) and a date 2016-08-29 with another number 250-00361-03 (silk screen white print on PC board)
• circumstances were as I remember; sunny day solar 109 volts input @ 52 amps; 2.8 kw load; 218 VAC input to board; batteries 48v DC @ 300 amp - stove oven, washing macine, bore hole pump, pressure pump from Jojo tank and micro wave. 

In your opinion Is the main board repair able? If not what would a replacement main board cost? Where could I get a replacement board from who? Will  appreciate advice - thanks. 

Right now trying to contact house insurrance policy guys to report failure.

I will leave the repairs to the expert Coulomb . Did send you the contact details of the board supplier .

OK - will wait for Coulomb to respond - thx for reply. Nope have not yet gotten contact details for a board supplier - everyone just want to sell new inverters, or have it sent via their shops to their own repair facilities.

Edited July 9, 20206 yr by Johan Fourie
spelling correction

The Sun Pays sell motherboards @  R4785   phone number 012 7340915 / 082 515 1655

6 hours ago, Johan Fourie said:

I have a 5k/4kwatt inverter - Synerji (which reportedly is an Aspex or Voltronic clone) which is has the same main board as per photos Chris posted a few days ago.

I very much doubt that the PCBs are in any way interchangeable. You would have to contact your supplier, or perhaps the manufacturer directly. It took years for the Axperts to have replacement boards available from Ebay or similar; I suspect that Synerji would not be available any time soon, as they are nowhere near as popular (as far as I know).

6 hours ago, Johan Fourie said:

In your opinion Is the main board repair able?

It's so hard to say. Arcing / burning / melting of terminals is generally quite bad; once the PCB material carbonises, it becomes conductive. It is possible sometimes to thoroughly clean up the area (you have to get every last spec of carbon, or it will arc over again in days/weeks/years), and if it's too extensive, it's just not possible, or the PCB is not strong enough to carry the terminals. Cracked semiconductors is also a red flag; they rarely fail in such a way that nothing else gets damaged, and often the damage isn't obvious.

The next issue is service manuals, and/or someone that has traced at least the basics of the schematic diagram. That is available for the common 5 kVA Axperts; I have no idea if it is available for the Synerjis or not. The circuits may have been copied close enough that you can use the Axpert diagrams, but it's by no means certain. The PCB number that you quoted is unfamiliar to me, and is not of the same general form as the Axperts'. It looks like parts have at least been moved around, perhaps to avoid allegations of outright carbon copying, but perhaps to actually improve the design, or since Synerji is a fairly large company, they may have designed from scratch, attempting to copy only the specifications of the Axperts (true work-alikes, not clones or even close copies). A bit like the Taiwanese IBM PC "clones" or "compatibles" of the 1980s or so.

So unless you're a wizard at board level repairing, I'd say it's not repairable. Let's hope that your insurance claim is successful and relatively swift.

6 hours ago, Johan Fourie said:

... high exhaust which cut overhead power lines  with lots of flashing and explosions and cable arcing and weaving onto fences and road surface.

Wow. A truly impressive fail.