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My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics. -
Re: How to test your infrared remote the easy way
if you have a video camera set it up on camera mode(make sure to remove the lens cover) while you have the camera on point the remote thru the camera lens and you will see a blinking light thru the viewphinder.if it doesn't blink you have a bad remote -
Re: How to test your infrared remote the easy way
In a dark room when your eyes have adjusted you can faintly see the infrared emitter since infrared is at the end of the visible spectrum and so is visible red light. So you can see a faint red light in dark rooms.
I built something practical for this awhile back just take an infrared photo transistor an LED and a current dropping resistor for the LED.
When infrared hits the photo transistor it conducts like a transistor and connects the LED to power. In other words the LED flashes with the pulses of light.
Mine ran off a 9 volt battery. Although I'm sure you could lose the current dropping resistor if you went with an AA battery.Last edited by Krankshaft; 07-05-2010, 10:38 AM.Elements of the past and the future combining to make something not quite as good as either.Comment
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Re: How to test your infrared remote the easy way
I didn't follow the link, but I just point it at an AM radio. Get bzzt bzzt as the codes are transmitted. No bzzt, I think check the battery first.
tomComment
How to test your infrared remote the easy way
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Hello
I have power adaptor(220V/input, 12V 1.2A/output) which has symptom of fluctuating output DC voltage between 11.5V-12.2V.
So I opened its plastic case and when switched it on, I heard constant tik tik sound from inside its PCB.
I measured DC voltage between negative and positive pin of the largest capacitor(400v 10uf) and it was measured contant 300V.
I also measured ESR value of all capacitors and I noticed that one of capacitor(KMG 16v 470uf), which located in the secondary side, have high ESR value(10 ohm),So I replaced it with same specification NXH capacitor.... -
Hello all, I've been looking into this portable air conditioner's remote control and can't find what could be causing the problem - or possibly this remote is just terribly designed.
The remote only works at exactly 3V - if I drop it any lower, using my bench power supply, to say, 2.9V then the remote will not flash the display and turn off. I don't have any AAA batteries that are exactly 1.5V each so I'm not sure if this remote is designed this way - to only use the freshest possible batteries, or if there's a failed component in the mix.
I can't find any schematics... -
Hello everyone,
I was wondering if anyone could help my in pairing a remote with a Toshiba fire tv?
The Tv model number is: 50lf711u20 Rev B.
I've already replaced all the the circuit boards within the tv along with the I.R. sensor receiver.
I've tried 3 different remotes which should be fully compatible with this TV.
Oddly enough. A few if the buttons on all of the remotes actually work. Even without pairing...which makes no sense.
The power button, along with the volume,back,select, and directional... -
Hello
I have a big problem and that is that in some cases when repairing active pfc power supplies I cannot work with a test lamp. I can only get help with 5 volts standby and for starting and starting I have to work without a lamp and this way there is a possibility of parts exploding and other parts being added.
Sometimes with a multimeter test the problems can be reduced to some extent, but I had several cases that had to be tested on and online and recently two varistors exploded. They had terrible resistance because the power supplies were over 800 watts.
Is there a way... -
Hello.
GPU came in, green lines. Spent lots of time using to get the Mats / mods drive working (found on youtube).
Found issue with a RAM block
Replaced, green lines gone.
Trying to test again, assuming getting the false positive. Originally had over 1K on a single bank. Now getting tosses low between banks.
Used a good card to test and same results low errors 32+.
I am just search for some form of command to do a full test on the GPU.
I just ran the mats command with my good GPU and passed after roughly 40 min.
The repaired one, ran...
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