Re: Help with a car lighter inverter
So I should getBy BULB TESTER, you mean soldering leads to the bulb you specified and one end to a switch and so on? Or do you mean a probe like the one in this ([url]https://www.amazon.com/Professional-6-12V-Circuit-Tester-Industrial/dp/B003UHNMMS[/url]) link?Re: Help with a car lighter inverter...3UHNMMS[/url])
Mandraco
Senior Member
Last Activity: 02-21-2019, 02:28 AM
Joined: 04-01-2013
Location: manati
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Re: Help with a car lighter inverter
What do you mean by INLINE multimeter? Mine is that in the picture I include below. It has no clamps, just pointy leads. When you say there's a workaround and going to the fuse contacts, I get it you mean to place the leads in both contacts of the fuse port, Am I right? The fuse port is on the cable, it's between the end that goes to the car lighter outlet and the inverter.
I included a picture of the fuse port as well as one of my multimeter....Leave a comment:
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Re: Help with a car lighter inverter
Excuse my late response, I have plugged the inverter to the car's CIG lighter outlet to test it. It blew the fuse on the car's fuse box. I don't remember if it did blow right when I plug it or as I turned the inverter on but I had no load on the inverter. The car has TWO outlets: Both have a 15 Amps fuse each but the manual states not to use for anything I've 12V 10Amps. Luckily I have some more fuses on hand to try again.
When you ask me to measure voltage drop, before and after the main switch,Do you mean some kind of IC? It seems...Leave a comment:
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Re: Help with a car lighter inverter
eccerr0r is correct, there's only one car here and it will not be available for a few days so I used the converter, maybe I can test in car today or tomorrow. As of the testing, you got to help me on this too, lol, I know the basics of my multimeter but I just use it mostly for diode and resistors testing. By testing for draw, do you mean testing amperage of the converter/ power source for the inverter or the inverter? If you refer to the converter, should the inverter be plugged? How should I do the test, should I place the black lead to the...Leave a comment:
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Re: Help with a car lighter inverter
Hello guys, I'm back! I'm so sorry to take so much time from my last post, these days have been very hard. I've been fixing other stuff around the house, gas range, clothes washer
Now, yesterday I put back together the Inverter and found it showed a blue/purple light in the inverter's brand logo but then it turned off on itself and toggling the switch on or off showed no change. Then I tried unplugging and plugging back and the only two LEDs, purple/blue on the logo and the status led, both flash the moment I plug the inverter....Leave a comment:
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Re: Help with a car lighter inverter
I was able to see the complete code on the IC, It is: 34063API as you can see in the picture I attached to this reply....Leave a comment:
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Re: Help with a car lighter inverter
Yes, the IC has written on a series of numbers and letters: 63API before the "6" there are what seems to be three numbers which are very faint. I looked up the visible part of the code and found only a site selling ICs with errors "save buying IC with typos" It says. Maybe this is one of those since the first numbers are not readable so easy. The most I can make is a "300" but it could be wrong, below is a picture, I'll try to get the complete code later when I get home, thanks....Leave a comment:
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Re: Help with a car lighter inverter
I only see a couple of caps and an IC, besides the ports.Leave a comment:
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Re: Help with a car lighter inverter
In these pictures you can see the board with the USB ports and the unattached red cable on the left. On the right you can see a connector with a pair of smaller red and black cables detached from other board. That board measures about 3\4 inch long, as you can see in the last picture, and is only a status light with the brand logo. For that one I can use the diode testing mode in my multimeter to find out the polarity of the diode. I hope this helps....Leave a comment:
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Re: Help with a car lighter inverter
Here is the first picture of the back of main board. The cables that go soldered somewhere on those solder points are the red in the left (marked with masking tape), the red and black on top right side and the blue one on the right( also marked with tape). I soldered the black and red ones on the right just to have them fixed to some place but I'm not sure if that's their place, I need to check before turning this thing on back again. The black and red on top left go to a board containing two USB ports....Leave a comment:
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Re: Help with a car lighter inverter
Thanks for the lesson, eccerr0r. Of all those parameters I was only aware of capacitance, voltage and temp rating I think I need to check the capacitor's data sheet to get some of those. Thanks.Leave a comment:
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Re: Help with a car lighter inverter
O.K. I'll post a couple of pictures and the parts where those loose cable go to. About the caps my question is more in general, like asking what should I keep on mind when buying a replacement capacitor for any device, I already know the replacements should be the same voltage rating and that pico farads(I think that's what means the symbol "ยต") but wonder if I would have to measure the capacitor's diameter and height. Thanks again!Leave a comment:
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Re: Help with a car lighter inverter
eccerr0r, thanks for the response. It's been a while since last I wrote here, I was about to order the MOSFET for the inverter but found out a couple of cables that were soldered to the back of the board before are no longer in place and I don't know where is the place for all of them, I took a picture previous to manipulating the board but unfortunately it doesn't got all those cables so I was searching for a picture of that board online or a schematic. I also thought of ordering other parts I need for other devices, specifically some caps but...Leave a comment:
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Re: Help with a car lighter inverter
Hello eccerr0r :-) when you say What do you mean?...Leave a comment:
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Re: Help with a car lighter inverter
Hello, I was looking for the MOSFET, the P55NF06 and found a few sellers listing it "STP55NF06" while others list it without the "ST". Are they both the same? I thought ST could be a reference to a manufacturer (ST Microelectronics) but wanted to be sure.Leave a comment:
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Re: Help with a car lighter inverter
Hello again, I performed the test for 6 MOSFETs: The two P55NF06 and four IRF630B. I did the test using my multimeter's continuity/diode test mode. Results are bellow:
The cracked P55NF06: NEGATIVE lead to pin#3(SOURCE) and POSITIVE lead to pin#2(DRAIN)= shows a reading of 006.
With NEGATIVE lead to SOURCE and POSITIVE to GATE= 001 which is the same reading I get if I touch both leads together. I assume that is the "beep" in other DMMs with beep function.
For the MOSFET on the left of the first picture,...Leave a comment:
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Re: Help with a car lighter inverter
Sorry for taking so much time to respond. You're correct, there are instances when you get the car lighter plug shorted and there's no need to disassemble the device entirely, I've seen a few cases like that. That was the first thing I did, thanks for it's great advise. I will post the results of the tests as quick as I can today. I was a bit busy with other stuff, for example my lap top PC turns on but wont boot and I was fixing my clothes washer. As it was damaged during huricane Maria's stay over my country. I'm glad you got to fix your inverter...Leave a comment:
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Re: Help with a car lighter inverter
OK, so I need to follow your instructions on the MOSFETs and post the results. I searched online before starting the thread and learned these two transistors are N-channel and remember reading about the test you instruct me to perform, it seems to me that the same test will not work with the other transistors, at least the ones marked "FM H04 IRF 630B" Am I correct?
Below is a picture you requested, the complete board. Not shown are a few diodes en the other side and the peripheral boards for stuff like the switch, power...Leave a comment:
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Re: Help with a car lighter inverter
I was trying to identify all the transistors in order to find how to properly test them. It's just being cautious, I tested resistors and diodes already but I'll test diodes again, though.Leave a comment:
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Re: Help with a car lighter inverter
@eccerr0r I forgot to address your first reply. I don't think the fuse will blow without the transistors since they are needed to complete the circuit in my opinion. I will check, though :-) About your case, I don't know what to do to certainly fix your inverter but you can trace the circuit, I don't know if that is a term, lol. I just try probing for continuity from the negative cable of the power cord on the board. About the traces giving you a hard time, I used to get the board over a glass table, then put a led light potent enough to get...Leave a comment:
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