repair

  1. C

    Help UV Ballast repair iSpring 110V

    Help, my power went out and came back at 70v, I think it hurt my iSpring UV ballast for 11W lamp. The electronics look good but it just doesn’t light up or for that matter the ballast ON LED doesn’t even come on. How would you go about testing some points to see where the fault might lie? I...
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    Old italian VFD Ansaldo Silcovert V

    Halo to all, is there anyone who has expirence with repairing of old Ansaldo Silcovert V VFD? There's always sign OFF on the display, it doesnt matter what I do? Does anyone has any idea or maybe the schematic of this machine? its 37kW VFD?
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    Trying to repair a Sony TC-366 Reel to Reel machine

    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...
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    Is the circuit fried?

    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...
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    CRT TV repair

    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...
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    Samsung TV UE65MU6100W 65 inch No picture, but sound

    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...
  7. C

    1994 Panasonic CT 27SF31S - Image suddenly shrunk to about a third of the TV screen's height

    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...
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    Digital Multimiter issue

    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...
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    Help In Identifying Power Transformer Replacement

    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...
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    Trying to repair electrical heating pad (TK-HP2412)

    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...
  11. K

    HP 180C Oscilloscope repair attempt - no traces and hissing noise.

    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...
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    Stabilising supply of noisy DSO-2250 oscilloscope

    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...
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    Need help repairing a B+K 1650 Tri-Output Power Supply

    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...
  14. M

    Repair Lecroy Waverunner 104MXi

    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...
  15. D

    Old Radio Antenna

    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?
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    Fixing a pair of headphones

    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...
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    AIWA CX-NA777 CD Repair, please help!!

    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...
  18. S

    Victron centaur battery charger overcharging, please help diagnose and repair

    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...
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    USB Port (Type B) Broken... Can this be fixed?

    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...
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    Repair help regards wall ac adapter

    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...
  21. Making a replacement cable for a HP 8445B spectrum analyzer preselector

    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...
  22. K

    Need Help Repairing Old PCB

    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...
  23. One Logitech X230 stereo speaker not working

    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...
  24. J

    Help repairing an Headset with dual jack connector

    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...
  25. D

    Help repairing several Reconyx trail cameras

    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...
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