Electronics - Others - Page 3 - Recent Questions, Troubleshooting & Support

hi,please you can show picture keb for power unit,or maybe you have another solutions

Inverter KEB... | Answered on Jul 23, 2018

If you are continually replacing the inverters, there may be an external issue causing the failures.

If you are continually replacing IGBT's on the same inverter, then there is most likely a problem with the circuit controlling the IGBT's.

Inverter KEB... | Answered on Jul 23, 2018

Fixya is unable to suggest sources for a Springfield 91509 cable with sensing bulb.

Electronics -... | Answered on Jul 21, 2018

First, I'm not a Sungrow representative.
* Contact your local solar vendor or contact Sungrow;
* Sungrow Power; https://en.sungrowpower.com/
* Sungrow Inverter MFR; http://sungrow.energy/

*** following is for information only.***
* Normaly after a PV install, there should have been a representative from the solar company (local rep) to walk you through the system features and have your internet solar monitor up and running. This app will collect all your solar data (very technical) and convert it to a "user friendly" display of power your panels and inverter(s) are producing.
* Installing instructions(Official) WiFi; https://www.youtube.com/watch?v=LVzuXssdhlI
* Installing App on phone (Official); https://www.youtube.com/watch?v=cIWINw6Ym4Q
* LCD Module User Manual; https://www.sungrowpower.com.au/files/Web_Files/FAQ/Crystal/Monitoring/eShow-UEN-Ver11-201608.pdf
* Reading digital display (Local Rep); https://www.youtube.com/watch?v=6yTziB7PVqE
* Installation w/battery (Official); https://www.youtube.com/watch?v=tKDI5jwFLxA
* Dogle WiFi setup (Local Rep); https://www.youtube.com/watch?v=6NCnLMjg9rs
* Call your solar provider for support.
Aloha, ukeboy57

Inverter... | Answered on Jul 21, 2018

Same thing happens to me .My 8gb silicon usb flash drive got the same error, please insert a disk into drive, the name of my drive weas changed into Removable Disk instead of the name(Sanctuary which is what i used) It said ni media ,and it was registered as XXXXXXXX U167CONTROL USB DEVICE can anyone help me with this.

Electronics -... | Answered on Jul 20, 2018

Let it set overnight is the safest way, put a VOM meter on it (dc volts) to see any voltage is present. You could get a say, ten watt power resistor an place across the terminals to safely discharge the cap. A direct short can be dangerous, cause burns, spark weld the wire or screwdriver to the terminal. Good luck.

Dometic Duo... | Answered on Jul 18, 2018


TIP: Brief guide to visual electronic fault-finding:

First, IS the appliance plugged in?
IS it switched on?
If YES to above, disconnect ALL power and visually check PCB components for obvious damage or shorts:

PCB: is the Printed Circuit Board burnt?
This indicates that a nearby component has overheated, possibly due to a short-circuit or overload.

PCB traces: are any traces (copper tracks) damaged / blown open?
Traces, the thin copper track 'wires' of the board, can be damaged by shorts / overload / overvoltage or rough handling of component.

Capacitors: are any caps bulging at top more than others, leaking from ends?
This indicates a failed capacitor.
Renew with exact same Farads value and minimum working voltage rating.

Resistors: are any burnt or blown (discolored, holes/ gaps on body)?
Resistors can work as voltage dividers, current limiters, feedback devices or in filters.
All have either screen-printed Ohms values or color-band coding of same.
As the connected 'parallel' circuit can affect a resistance reading, unsolder one leg only then test ohms.

Transistors and IC's: Although usually not visible damage, these can fail internally.
They perform many functions, including amplification signal generation and switching.
A very hot transistor / Integrated Circuit "chip" may spell trouble, as heat from overdriving / overloading / shorts may cause the internal junction to fail.
Some are electro-static discharge (ESD) sensitive.
Always renew with same component or, in some cases, an equivalent device may work.

Fuse: As most people are aware, a fuse protects the connected circuit (load) from overload, or over-current in case of shorts, too many devices, etc.
When current limit (Amps) is exceeded, the fuse blows, disconnecting the supply.
A blown glass fuse may have black soot-marks, or loose / blown fuse wire 'floating'.
Besides glass cartridge fuses, there are also resttable PTC types, which look like a disc capacitor, but usually blue.
PTC's open when overloaded, and may take a long time to reset themself, (if at all).

Dirty / oxidized connectors or pads:
May cause erratic and intermittent failures, where signal does not pass through.
Common on "pad" type connectors, as with a ribbon-type 'data' belts used for displays, keypads, etc.
Tactile buttons, common on keyboards, keypads and remote controllers, are also prone to contamination.
Molex plugs & IDC header pins can also become oxidized.
Usually, a wipe with a soft cloth or pencil eraser does the trick.
Surgical spirits or Servisol (contact cleaner) can remove oils / oxidization.

Bent pins: IC's and header connectors may have a broken or bent pin, rendering that pin non-functional.
Pull connector plug out in a straight direction, without twisting, then check all pins are good, before re-inserting any connectors.
Some connectors use a hook / catch system to ensure firm grip.
A small screwdriver, thumbnail or squeeze can unhook the various types.

Rectifier Diodes: usually in the power supply section, maybe individual diodes or a bridge rectifier, (with 4 internal diodes).
This converts AC voltage to DC.
Failure of any diode will disable the appliance.

Potentiometer: is the knob loose, crackling or erratic when touched / moved?
What people sometimes call a 'volume knob', the 'Pot' is actually a variable resistor, consisting of a resistance track, usually carbon, with a center wiper contact.
Often wired as a 'potential divider', the (common) wiper adjusts the resistance inversely between 2 outer terminals.
For example, the wiper may be signal in, the 'minimum' terminal grounded, and 'maximum' terminal out to amplifier.
If wiper or track are worn, signal can be temporarily lost.

LED: is your indication / display LED not working?
Outline of an LED:
As a Light Emitting Diode is polarized, the voltage to it must never be reversed.
This is why the negative cathode has a flat spot on the flange, and positive anode is bevelled.
The current must not exceed the forward current 'If' and voltage through diode must not exceed forward voltage 'Vf' rating.
That is why most LED's have a small 'current-limiting' resistor in series, connected to one of the legs.
A quick & simple single-color LED test using a single 1.5 volt cell and 2 thin insulated wires:
As LED Vf usually begins at 2V-2.2V, we can safely use a singe 1.5V cell without a resistor.
Hold negative wire to cathode side, either on the LED or soldered point on same track.
Briefly touch the positive wire to the anode side, watching for a flash or glow.
Some 2-3 lead LED's may be bi-color, tri-color, or the 4-lead RGB type.
Others may use a higher operating Vf, such as 3V for U/B or 8-12VDC for 'Jumbo' LED's.

Infra-Red Remote LED's: Remote or motor-gate beam suspect? Not sure if working?
Humans are unable to see Infra-Red wavelengths.
The image sensors of most digital cameras, webcams, security cameras, cellphones are sensitive to the IR radiation emitted by the IR-LED at front.
Point your remote at one of these, and watch screen for whitish-purple flashes / pulses of light from the LED.
The pulses are modulated digital data being sent from remote, or for a broken-beam detector, just 'active'.
Also check batteries, and for universals, that pairing is correctly done.
Thassall!! :)

on Jul 15, 2018 | Electronics - Others

Yes very probably and it might not do the solar panels much good either.

When the solar capacity exceeds or could exceed the demand it is very desirable to fit a solar charge regulator, solar voltage regulator or solar panel controller.

Many are available at all price ranges from beer-money to mortgage and both Amazon and ebay provide a wide range though it would be wise to gather some specialist knowledge before you buy.

Solar... | Answered on Jul 15, 2018

Small home solar power generation systems are divided into off-grid power generation systems and on-grid power system. The main difference is whether there is a battery.

System Overview
Applicable environment: in the wild, large and medium-sized residential / houses that are difficult in taking electricity (it is not recommended to install in the mains area, or install the mains complementary type).
The system is equipped with high-quality monocrystal silicon or polycrystalline silicon solar panels and has a supporting maintenance-free solar battery, photovoltaic off-grid inverter and charge controller with overcharge and over-discharge protection function, which can be designed as mains / intelligent switching function of the photovoltaic system. The controller adopts LCD screen/indicator display, which is beautiful in appearance, safe and efficient.
Easy maintenance, a long service life of more than 20 years, a variety of charging methods complementary, solar and city power can charge the system.
The small household solar power system is composed of a solar panel, a solar controller, and a battery bank. If the output power is AC 220V or 110V, you need to configure an inverter. All these components you can find it in Eco-Sources solar products at competitive price.

Solar Panels

The function of the solar panel is to convert the light energy of the sun into electrical energy, and the output DC power is stored in the battery. Solar panels are one of the most important components in small-scale home solar power generation systems. Their conversion rate and service life are important factors that determine whether solar cells have value in use. It is made up of the following materials:

Solar Cells: High-efficiency (16.5% or more) monocrystalline or polycrystalline silicon solar cells are used to ensure that the solar panel generates sufficient power.
Glass: Low-iron tempered suede glass (also known as white glass) with a thickness of 3.2 mm and a transmittance of over 91% in the wavelength range (320-1100 nm) of the solar cell's spectral response. For infrared light greater than 1200 nm, there is a higher reflectivity. The glass is also resistant to solar ultraviolet radiation and the light transmittance does not decrease.
EVA: A high-quality EVA film with a thickness of 0.78 mm, which is coated with an anti-UV agent, an antioxidant and a curing agent, is used as a sealing agent for solar cells and a connecting agent with glass and TPT. It has a high light transmittance and anti-aging ability.
TPT: The back cover of the solar cell-the fluoroplastic film is white, reflecting the sunlight, so the efficiency of the component is slightly improved, and because of its high infrared emissivity, the operating temperature of the component can also be lowered. Which helps improve the efficiency of components.
Border: The aluminum alloy frame used has high strength and strong resistance to mechanical shock.
Solar Charge Controller

Using a single-chip computer and special software to achieve intelligent control.
Accurate discharge control using battery discharge rate characteristics correction. The discharge end voltage is a control point corrected by the discharge rate curve, which eliminates the inaccuracy of the simple voltage control over discharge and conforms to the inherent characteristics of the battery, it means different discharge rates have different final voltages.
With overcharge, over discharge, electronic short circuit, overload protection, unique anti-reverse protection and other automatic control; the above protection does not damage any parts, do not burn insurance?
The series PWM charging main circuit is adopted, so that the voltage loss of the charging circuit is reduced by nearly half compared with the charging circuit using the diode, and the charging efficiency is 3%-6% higher than the non-PWM, which increases the power consumption time. Overcharged recovery charging, normal direct charge, and floating charge automatic control mode make the system have a longer service life. At the same time, it has a high precision temperature compensation.
The intuitive LED lighting tube indicates the current battery status, allowing the user to understand the usage status.
All control uses industrial grade chips, which can run freely in cold, high temperature and humid environments. At the same time, the crystal timing control is used to ensure accurate control.
Using digital LED display and settings, a one-button operation can complete all settings, the use of extremely convenient and intuitive role is to control the working state of the entire system, and the battery has overcharge protection, over-discharge protection. In places with large temperature differences, qualified controllers should also have temperature compensation. Other additional functions such as light control switches and time control switches should be optional for the controller.
Solar Battery

The function of the battery is to store the electrical energy emitted by the solar panel when it is exposed to light and release it when needed. The solar battery is the application of 'battery' in solar photovoltaic power generation. Currently, there are four kinds of lead-acid maintenance-free batteries, ordinary lead-acid batteries, colloidal batteries and alkaline nickel-cadmium batteries, and the widely used batteries are lead-acid maintenance-free batteries and gel batteries. These two types of batteries are suitable for solar power systems, especially unattended workstations, because of their inherent 'free' maintenance characteristics and less environmental pollution.

Solar Inverter

The direct output of solar energy is generally DC 12V, 24V, 48V. In order to supply electrical energy to 220V AC appliances, it is necessary to convert the DC power generated by the small household solar power system into AC power, thus requiring the use of a DC-AC inverter.

Advantages Of A Small Home Solar Power System
Safe and reliable, no noise, no radiation, no need to consume fuel, no mechanical rotating parts, low failure rate and long service life.
It is environmentally friendly, not limited by geographical location, short construction period, random size, easy assembly and disassembly, easy to move.
The cost of disassembly and assembly is low, and it can be easily combined with buildings. There is no need to pre-embed high transmission lines, which can avoid damage to vegetation and environment when laying cables over long distances.
The voltage is stable, and it is widely used in various electrical equipment. It is very suitable for electricity use in remote places such as villages, farms, hills, islands, highways, etc. It is also an excellent emergency backup power source.
Design Considerations For Small Home Solar Power Systems
Where is the small household solar power system used?
What is the radiation situation in the area?
What is the load power of the system?
What is the output voltage of the system, DC or AC?
How many hours does the system need to work every day?
How many days does the system need to be powered continuously in the event of rainy weather without sunlight?
What is the starting current?
The number of system requirements. https://www.ecosolarwind.com/
900w 24v polycrystalline off grid solar panel kit for homes, rvs, trailers-1-vsnt3kkt5sri53blkttdi30u-3-0.jpg

Solar... | Answered on Jul 14, 2018

Wow! I've hunted and hunted for 'alarms' / 'beeps' / 'beeping' / 'sound' but not a whisper anywhere about this?! Even the official manual says nothing about this condition?

"I" would try disconnecting EVERYTHING... then at the CONTROLLER jumper each contact from one to all of the others to hopefully "reset" your electronics... then reconnect and try again!


Solar... | Answered on Jul 08, 2018

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