googles take on it ..
The image shows two surface-mount resistors, both marked with "18R2", which indicates a resistance value of 18.2 ohms. These resistors are likely metal foil resistors, known for their precision and stability, and used in applications requiring accurate resistance values.
Foil resistors are constructed with a thin metal foil mounted on a ceramic substrate, offering excellent heat conductivity. The markings "18R2" denote a resistance of 18.2 ohms, with the "R" acting as a decimal point. These components are typically used in circuits...
petehall347
Badcaps Legend
Last Activity: Yesterday, 07:43 PM
Joined: 01-26-2015
Location: worcester
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firstly verify the power supplyLeave a comment:
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because it's very likely to burn up the output devices in little time ..they did extremely well to last 20 seconds without cooling ....Leave a comment:
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hope you didn't power it up as it is in the picture ....Leave a comment:
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hardened steel grub screw . try a reverse drill bit...Leave a comment:
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battery will be more like 14v when charging ....Leave a comment:
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get a nice manual multimeter .non of that autoranging rubbish ....Leave a comment:
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check out the colours of r69 r70 r73 and r74 they should also be 910 ohms .. white brown brown is 910 ohms ....Leave a comment:
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910 ohms [ATTACH=JSON]{"data-align":"none","data-size":"large","data-attachmentid":3639916}[/ATTACH]...
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where are the original replacement transistors coming from ?...Leave a comment:
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long time since i looked at things like this . i seem to remember a spark gap component that stops them working . no idea if that has one or not ....Leave a comment:
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dont trust parts lists as they are often wrong because of production changes . always go off what was actually fitted originally .. if anything has been changed in the past check out the schematics ....Leave a comment:
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pwm is the other sort as i am sure you will already know . i have heard a few stories about the cheap chinese charge controllers . i expect they might be getting better now like other things are . if i was serious about setting up a solar system i would go victron straight away rather than chance having to buy twice ....Leave a comment:
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let us know how it is .. victron is the go to make over here for solar power and inverters ..
some of the cheap ones arent mppt even though they say they are ....Leave a comment:
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i would replace all those fusible resistors with metal film ....Leave a comment:
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take it apart and take some nice pictures of it . then post them here ....Leave a comment:
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try charging a different device...Leave a comment:
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d9 d10 is it ? remove one and use resistor and 2x 9v batteries and volt meter ....Leave a comment:
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what is the actual gains by doing it ? i am long out of touch with windows . i got stuck at 7 ....Leave a comment:
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