SUN GTIL 1000 fix part3

[@ch0asnature]

I admire your courage... i also have the same issue, comes on but no production....not even had the courage to open it yet..

[@viocaia]

Why not..is nothing dangerous as long as is not connected to any power ..mainly mains! It's made by humans, can be fix it by humans! 🙂

[@ch0asnature]

@@viocaia last time I opened one of these things I didn't know where to start even though I know most of the components and their functions - not sure how you determined the issue was a transistor

[@ch0asnature]

I also have a 600 watt small inverter I mistakenly sent live voltage into the ground and blew something, I thought it was the fuse but after ordering the very small mini fuse and replacing it , it still sparks when I plug power to it So I just packed them up into a box Now after watching your video I am thinking of bringing them back out and having a look again So blown transistors can make it seem like it's short circuited ?

[@viocaia]

@@ch0asnature I measured short at the DC input..the whole capacitors beeing good..I just cutted the drain trace to transistors before takeing the out and I measured two shorted ..first two upper row, with the input DC at right hand side..it took more to replace them then diagnose...

[@viocaia]

@@ch0asnature yes, but also this devices are lke a boost or buck converter for the DC part, which delivers current to AC inverter.. So first will determine where is the short, in DC or AC part... Rarely both are damaged. As for the simple AC inverters the DC part is missing due the direct battery connections.. But checking the semiconductors will always solve the problem.. Be careful, never work the boards with mains on!

[@thedabbler2753]

Glad to see the little blue box working it's magic again!

[@viocaia]

Don't for how long, but is running..

[@thedabbler2753]

@@viocaia I think I jinxed myself. My 2kw GTIL died today :(

[@viocaia]

@@thedabbler2753 Sh..T! In the middle of summer..What are the damages? Is the DC input in short?

[@thedabbler2753]

@@viocaia I am not skilled enough to diagnose it. I will have to watch your videos some more. It was making a cracking sound and behaved erratically when DC current was allowed in from the solar array. Opened it and could not see anything obvious.

[@viocaia]

@@thedabbler2753 ye.. It can be lots of... Check those diodes under PCB first..

[@lloydcole5787]

Amazing video. This is clearly 1 of My inverters problem. So thank you for you video. Very good info. Very impressed with your knowledge! I'm however not having to good of a run with my sun g inverters I run 4 currently only on 3 at present as 4th unit dead. 3rd unit takes a bite of the power then cuts out back to 0.0w every time. Been doing this a while like I got a bad capacitor inside. I ended up turning wattage down to 680w and this makes it run much longer. I'm on 4x 2000w version 2 units. Thanks again for this video. Lloyd.

[@viocaia]

Limiting power it's a solution for long working service..also extra fan! Thank too!

[@lloydcole5787]

@@viocaia I have left a fan blowing on my 1 inverter that does this. The other 2 get upto 60c at times yet the inverter that goes upto 800w or more then the limiter wattage on screen goes to 0 then you hear a noise inside inverter then it drops back to 0.0w everytime. Like 5 seconds later it ramps up again then to repeat the same process over and over again. I look at temp on screen. I see others getting upto65c yet this bad inverter in low 50s I can't work it out. This why I suspect a faulty capacitator. I have got another 2kw later version to yours dead but I'm trying to return back to seller as not old. It's flashing blue arcs and smoking around the 2x 30 amp fuses. Can't show you a pic as no idea how to send it on here.

[@viocaia]

@@lloydcole5787 The ramping one, I believe it's IGBT transistor problem more then capacitor..I believe first block is a DC to DC converter, eventually modulated by the High Voltage IGBT block to the mains frequency and voltage..First the DC converter is starting, getting the high DC voltage ready ..when delivered to modulation block..probably a short is on, obviously DC boost converter goes breakdown state blocking production..and so on..Check those transistors for short.. at the second it's clear a mosfet or more from th DC boost are in short..or those diodes under..maybe both..you can find it very easy with a multimeter in diode mode..There are replacement boards on ALiexpress..but almost same price like a new device! Anyway the idea of this inverters is brilliant..but implementation is not mature..yet..

[@lloydcole5787]

Very interesting. I get days where it works ok as looked yesterday and thought let's turn the wattage up. Did it once back to 0.0w and then working OK but I know its short term until it starts playing up again. I half wonder if there was a lazy Heat temp sensor somewhere switching it off but I would of expected like a message on screen stating high heat but never get no messages. I always feel its not heat related as other 2 next to it working fine. Infact 1 always sits at 1650w happy. Temp on hot days around 62 65c which is hotter than the bad one. I find it strange why bad one always cuts out back to 0.0 around 700w I been limiting Watts to 678 and this number let's me run perfect. Took a while finding the maximum number lol.

[@viocaia]

@@lloydcole5787 this morning under a low load like 300W the fans were quiet, not running and the temp up tp to 51C..but as soon as the load went to 800W the fans pop up and 46C Max..

[@glottis512]

what about tempeture and cooling? After replacement of mosfets by better one?

[@viocaia]

Kind of better, but not dramatic..I also limited the output power to max 850W, seems like a good idea for better cooling..

[@halloweenhopes2063]

Hello Viorel, thank you for your great videos. I have the same inverter. Recently, it stopped producing power. It still shows the input voltage of ~66V DC and output AC voltage of ~115 to 120V. Do you have any suggestions? Thank you.

[@viocaia]

Thanks for apreciation! Isn't the input voltage to high? Try with alower voltage first!

[@halloweenhopes2063]

I have nine ~120W panels: 3 parallel branches with three 18V (22V for the open circuit) panels in series. My invertor model works with the input voltage from 44V up to 95V, thus, 2 solar panels in series are not enough to start it up. My solar system had been working perfectly since June. Last week we had repeated power outages. After that my inverter stopped producing power. It still shows the input voltage of ~66V DC in the full Sun and output AC voltage of ~115 to 120V from the grid. I tried to disconnect the power limiter, but it didn't help. Thank you so much for looking into that.

[@viocaia]

@@halloweenhopes2063 If so, 66V it's fine. Maybe you have a problem on the DC side of the inverter, check the pnput for short, check the internal fuses...I really don't know what can be wrong

[@Brio1975]

Hi Viorel, thanks for this video. do you know the model of mosfet for GTIL2 (2Kw)?

[@viocaia]

Should be the same, 2000W version it's kind of double 1k...

[@adrianheffernan]

Well done

[@viocaia]

I hope so..it's working great since..

[@terryswallace]

How's it working now?

[@viocaia]

No more problems, working as new.

[@typxxilps]

5:32 thermal picture should show the effect of your themal improvements I like this kind of repairs and to make them last but usually I order all transistors at once and replace all of them or look even for better ones cause that is their usual achilles heel, but you get what you pay for. You can get a lot of worser options for even more money cause the limiter is still quite unusual.

[@viocaia]

I have 2kWh model now and so far it's working ok...1kWh it's kind of small, better for a max of 600Wh level.

[@templar3540]

the best tech.. tnx

[@viocaia]

Thank you too!

[@MattieGriffin]

Glad you got it fixed :)

[@viocaia]

For now!..

[@me_nobody]

Finally you got it done

[@viocaia]

For a while..?? 🙂

[@heliumnetwork2871]

hi mate, someone can tell me if i can power my miner directly from a 12v battery ? My battery have 12v but sometime rise up to 14v because the sun charge the battery , for this i want to using a dc/dc converter from 12v+ to 12v fixed and curent 2amps output exactly how much miner need. do you think will work or i burn the miner ?

[@viocaia]

Hey! You can safely do that, even when the bat rise at 14.4V..the miner have a power regulator good enough to assure the right current and voltage..no need for extra DD to DC..

[@heliumnetwork2871]

@@viocaia thank you for answer. Are you sure i will not burn the miner ?:) I try this with a router from Huawei b310 powered from a 12v batt , batt have 4 amps the router needs only 2 amps , once i connected router fried

[@viocaia]

@@heliumnetwork2871 The battery it's like a bucket..the flow depends of the devices needs..so you can safely connect a 12V radio to a 1000Ah battery! It will take as much as it needs..it's like a tap..opens as it needs..the router burn probably reverse polarity.I have few cameras, a miner and a router powered from solar install and 350Ah batteries for more then a year...no problems..all running at 12V of course..just take care about the polarity! A single revers and say good bye..

[@heliumnetwork2871]

@@viocaia ok, i will try. Thank you

[@heliumnetwork2871]

@@viocaia thank you colegu 😀 its working , it means that my son reversed the polarity when he tested with the burned router. I will try with miner now but anyway i will put a fuse of 2amps between battery and miner for protection Also i have an tplink router this one working at 9v not 12v do you think 14,4v will be more or will work ?

[@camolas71]

put a dc breaker from pv to invertor

[@viocaia]

I will..and a fuse

[@cabanossi]

Working with so high DC Voltage without any protection is insane. I hope you will not electricute yourself.

[@viocaia]

There was no high voltage involved all the way..even at the end, the phase is disconnected by relay..all the solar panels are grounded too..no danger..

[@generalawareness101]

100% shite and might as well have been a paper bag. A real thermal pad is made of silicone and once you touch one you will always know. I am not sure wth that was you showed, but it wasn't anything worth snot, and explains why they popped.

[@viocaia]

I hope this time will last..

[@adrianheffernan]

Well done

[@viocaia]

hope so!