Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Hi, I'm new here and I'm sorry if this'll sound stupid, but I'm no master in electronic repair. So I got myself a reel to reel machine (Sony TC-366). Not the best available but it will serve well as a real "not-so-good tape simulation" in my studio. Now, despite a couple of mechanical issues...
Hi, my mouse clicks were faulting a lot, since I had a spare one, I decided to buy new switches/clickers and replace it.
First time desolding things and didn't know that for solder through hole you need to add solder to make it easier. So I asume I put to much heat forcing the tip inside the...
I have two CRT TVs one Panisonic PV-M1323-A and a Sansui TDC2075-A
My Panasonic works but has the issue as shown in the videos here and I'm guessing it's something screwy with the vhold but there's no knob or setting to adjust it so I tore it down and took images of the PCB Panasonic...
Hello friends,
I have a 65 inch Samsung TV here with a problem. The screen no longer has a "normal" image, but random color everywhere. Sound can be heard from the television from a program that is playing.
The TV backlights are all fine and working great so I don't know where else the problem...
Hello,
I'm brand new here, so please let me know if I'm posting incorrectly or in the wrong section.
I need help diagnosing a sudden picture issue with my 1994 Panasonic CT 27SF31S. I've used it almost everyday for watching TV, watching videos, and gaming since I bought it, and I've never had...
Hi guys, I have a digital multimeter from TTI reference 1604, it was involved in a short circuit with no fuses installed, and now, it's not functioning as you can see in the picture,
When it'spluged to power, it makes a noise from its buzzer, and displays random things on its display...
Hi All!
Never done a forum post before but I thought I'd give it a shot to see if anyone out there had any insight into an issue I'm running into on a repair I'm doing!
QUESTION:
I need help in identifying what the specifications are on this power transformer (pictures below!).
It appears...
I bought this heating pad, and it worked 5-6 times I tried it (for 2-3 days). Then one day it just didn't want to heat. I somehow managed to make it heat 1 more time after this (I do not know how - pure luck), and since then no matter what I try it will not heat (I just try to change settings...
Hi all,
I noticed a wealth of knowledge and advice on these forums regarding oscilloscope repair, so I had to sign up!
I while back I purchased a HP 180C.
I have had it in storage a while and have finally pulled it out as a project to work on.
Unfortunately it seems that I have no beam at...
I've had a DSO-2250 9-bit/250MSps/60MHz scope for a decade, bought "new", and it's always had a large ripple voltage (about 1/3 of a division) overlayed on any signal. The ripple sometimes made the DSO barely usable. At some stage I put a filter on the USB cable inline with the power; this...
Hi all, I recently came into possession of an old B+K 1650 Tri-Output Power Supply that has seen better days, and I would love some help with getting it back to normal again. There are pictures and a video, as well as links to the schematic, user's manual, and parts list in this Imgur album.
I...
Hi,
I am trying to repair a Lecroy Waverunner 104MXi. The problem is when you plug it in and switch it ON, windows starts booting but then it just turns off. Now if I try to switch the oscilloscope ON again then it does not work until and unplug it and plug it back in again.
I wanted to look at...
Hello, I am new here and I need help with an old portable radio antenna.
It seems to have gotten the solid tip stuck or fallen into the entire thing.
If there is a way to get this solid tip out could you please tell me?
First things first, they look like Beats, but I’m pretty sure these are knockoffs. Nonetheless, they sound pretty good, and I picked them up at Goodwill for a steal and love a challenge, so if someone is interested on taking on this electronics mystery with me I’d be incredibly grateful...
Okay so I am completely new to electronics, but I am a professional Home Contractor with lots of experience fixing things in general. Recently I decided to try to fix up a stereo for my shop, and so I went and salvaged an AIWA CX-NA777 Stereo system that worked decently except for the CD...
Hi there,
I have a Victron Centaur battery charger, 12v 200 amp output. It's a monster!
On inspection it's actually two identical 100a chargers in the same case, connected in parallel. Other than a tiny 3 wire cable whose purpose I'm not sure of, there is nothing connecting the two chargers...
I have a Zoom G5 pedalboard for guitar effects, but the plastic port came loose and disconnected from the 2 metal prongs.
1 of the prongs is broken, I have attempted to solder it back on with no luck due to my lack of experience in this field.
If I take it to a shop to repair, would it be...
Hello Friends, I am trying to repair a Panasonic Wall ac adapter (6V, 500ma) smps based, I checked with multimeter no output, checked and internal fuse with continuity and all okay, I am attaching pics, im novice so donno what else may be wrong in it, front and back image of pcb with components...
Hello All,
Lately, I have been working on building a replacement for a somewhat rare cable assembly for communicating between a HP 141T/8555A/8552 mainframe spectrum analyzer and a HP 8445B "Automatic Preselector" add-on box, and I thought I would document my work here for others to follow.
A...
I collect old vhs, and recently got some cool gimmick ones that light up when you press a button. However, they are almost 30 years old and no longer work.
Taking a look at the pcb both were heavily corroded. I scraped off as much green corrosion as I could and replaced batteries but no luck...
I recently acquired a Logitech X230 speaker set, with subwoofer and stereo speakers from a friend, but was dismayed to learn that the left speaker is non-operational. The other one and the subwoofer work fine. Im a complete noob to sound/speakers, so I decided to open it up and look for broken...
Hi guys! This is my first post here because I'm in trouble finding a right solution to repair my headset. So this is my headset:
And I broke to two jacks and lost them. The cable is cut before the plastic splitter and I´ve got an image with the cables. There are 1 green, 1 red, one copper...
Hello my fellow members,
I have several Reconyx trail cameras that are broken and I am hoping someone can help me with. They cost around $600,- per camera and I am not able to send them out for warranty. These cameras are used to capture photos of wildlife (jaguars, tapir, etc.) and are...
I recently managed to acquire a broken BWD 820 CRO for $20 and was planning on fixing it. According to the person I bought it from, it was working fine until the fuse blew in it - now, the fuse blows whenever you replace it and try to turn it back on. Does anyone with experience repairing CROs...
I'm repairing an HTC Desire 816 that had a broken screen and LCD. I fixed all of that but the battery terminal was some how pulled away from the circuit board. I need to solder the terminal back onto the circuit board in order to charge the phone. However, I don't have a soldering iron. Is there...
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