This crossover was bought new about 12 years ago, and has probably been powered on for at least 3/4 of that time. It also has a recently developed horrible sound on the second channel, sometimes it's a wub-wub-wub, sometimes it's just a hum that comes and goes. It's not noticable if something is playing (it may be gone), but it's quite noticable if there is silence.
Because of age and problems it's due for a recap. I'm also strongly considering putting in sockets to potentially replace the 12 ST TL072 opamps. For such a small device, it's still going to be over 30 screws to take...
Announcement
Collapse
No announcement yet.
Badcaps Electronics Repair Forum & Schematic Search
Collapse
Collapse
Please log in to your account to view your subscribed posts.
Directory | Topics | Posts | Last Post | |||
---|---|---|---|---|---|---|
Badcaps Capacitor & Electronics Repair Forum | ||||||
Frequently Asked Questions (No Posting)
All new members, PLEASE READ HERE FIRST! Posting only allowed by established members.
Topics: 45
Posts: 733
|
45 | 733 | ||||
Announcements & Related News
Site announcements, capacitor-related news, and anything relavant you might think of... Got News? POST IT!!
Topics: 235
Posts: 42,041
|
235 | 42,041 | ||||
Document & Software Archive | ||||||
Common Parts Library - Datasheets
Share or download datasheets or application notes for electronic components and other parts. Contribute your knowledge or ask questions. Before using please read our Terms of Service.
Topics: 1
Posts: 4
Last Post:
ncp81208 datasheet
|
1 | 4 | ||||
General Topics | ||||||
General Capacitor Questions & Issues
Questions and answers for identifying whether your device has bad capacitors. Also post general capacitor-related questions and issues here.
Topics: 3,190
Posts: 32,710
|
3,190 | 32,710 | ||||
General Computer & Tech Discussion
Have just a general computer question, post it here. This can be anything from an OS issue, hardware issue not related to capacitors, upgrade question, or whatever basic tech-related issue is on your mind.... This is also a good place to share your tech projects!
Topics: 4,498
Posts: 74,848
Last Post:
Thinkpad X390 Ram Upgrade
|
4,498 | 74,848 | ||||
Troubleshooting Hardware & Devices and Electronics Theory | ||||||
General Electronics Technical Discussion
If you have a general question concerning basic electronics theory or component function & usage, here's where it goes.
Topics: 3,978
Posts: 44,382
Last Post:
Identifying component Flyback? DC-DC?
|
3,978 | 44,382 | ||||
Troubleshooting Desktop Motherboards, Graphics Cards, and PC Peripherals
Technical discussions covering any type of desktop motherboard, video/graphics card, controller card, or whatever other desktop peripheral you need help with. Any and all brands and models welcome. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 6,838
Posts: 37,391
Last Post:
hp pro one 600 g5 touch bios
|
6,838 | 37,391 | ||||
Sub-Forums:
| ||||||
Troubleshooting & Designing Networks
Post your computer network questions, ideas, gripes, and so on in here. This can be any type of network, whether its cabled, wireless, or whatever. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 501
Posts: 5,455
|
501 | 5,455 | ||||
Troubleshooting Laptops, Tablets, and Mobile Devices
Technical discussions covering any type of laptop, notebook, netbook, tablet, or smartphone. Any and all brands and models welcome. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 31,982
Posts: 305,323
|
31,982 | 305,323 | ||||
Sub-Forums:
| ||||||
Troubleshooting Computer Displays
Technical discussions covering any type of PC/computer display, whether it be CRT, LCD, or anything else. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 5,324
Posts: 75,720
Last Post:
Dell 2408WFPb / 2408WFP - No Power
|
5,324 | 75,720 | ||||
Troubleshooting TVs and Video Sources
Technical questions about your defective television, projection screen, LCD/plasma, or any other type of video device. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 27,465
Posts: 374,929
Last Post:
Equivalent for GT30F124
|
27,465 | 374,929 | ||||
Troubleshooting Power Supplies and Power Supply Design
Technical discussion for power supplies. This covers PC supplies, and any other related power supply issue. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 4,183
Posts: 65,246
Last Post:
ASUS ROG THOR 1200W PLATINUM PSU
|
4,183 | 65,246 | ||||
Troubleshooting Printers, Copiers, Scanners and other Imaging & Printing Devices
Technical questions about your defective laser or ink printer, plotter, copier, scanner, and other imaging & printing devices. This section also includes digital cameras. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 303
Posts: 1,670
Last Post:
i need help canon g3420 error 1300
|
303 | 1,670 | ||||
Troubleshooting Audio Equipment
Technical discussion on audio equipment troubleshooting and installation. This can be anything from a home/car stereo, guitar amp, and so on. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 2,329
Posts: 27,530
|
2,329 | 27,530 | ||||
Troubleshooting Appliances and other Household Electronic Stuff
Technical discussion on household appliances & other household electrics & electronics; including troubleshooting and installation. This can be anything from a washer/dryer, dishwasher, microwave oven, other sordid kitchen electrics and so on. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 225
Posts: 3,920
Last Post:
Sony DVD player stuck tray (DVP-SR310P)
|
225 | 3,920 | ||||
Troubleshooting Game Consoles & Other Weird Devices
This can be anything from game consoles to arcade games to anything else that doesn't really fit into any of the above categories. When starting a new thread, please put the make AND model of your device in the thread title. Also be VERY descriptive of your issue, that way you'll get the best answer possible!
Topics: 1,004
Posts: 10,885
Last Post:
EDM 033 caps I'd and purpose
|
1,004 | 10,885 | ||||
Equipment Usage, Soldering, Techniques, and Reviews
Technical discussions concerning soldering techniques, usage of test equipment, how it works, what's best, and some pointers in using it all.
Topics: 1,381
Posts: 19,439
|
1,381 | 19,439 |
What's Going On?
Collapse
There are currently 475165 users online. 3305 members and 471860 guests.
Most users ever online was 1,342,976 at 10:51 PM on 04-26-2024.
- satelit150 ,
- haji ,
- Casemiro Martins ,
- 3liMohmammad ,
- mgp0695 ,
- shetos ,
- elshanum kanaya ,
- Nabeel khatri ,
- oklaskar ,
- hasan90073 ,
- baymerid ,
- Rimon Mia ,
- danish03334884781 ,
- parasia26 ,
- erdenebat ,
- Naveed903 ,
- Canny ,
- compace ,
- volinakis ,
- Boomer501 ,
- gtohugo ,
- Ali Wardana ,
- trunguntilyou ,
- jithinkn ,
- Maxpower3 ,
- hansadrian ,
- deadrel ,
- Igor_IP ,
- ahmed06 ,
- Safvan Techei ,
- adham20 ,
- barbarian2009 ,
- Looda ,
- Ficys ,
- Tushar2010bd ,
- isolutions.csi ,
- moonjutt ,
- service world ,
- jacospama ,
- kvantum ,
- dr.tsiou ,
- ribern ,
- Slesar ,
- nikal ,
- daniel92 ,
- djonsen ,
- Traptor ,
- SHONE984 ,
- acetech ,
- zhm101@gmail.com ,
- wzamoyski ,
- Touqeersiddiqui ,
- teknisilaptop ,
- NAD_Freak ,
- Lenguyen1912000 ,
- Dises ,
- emken ,
- naser.atie ,
- ash91 ,
- ravenrock ,
- Trakiahmed ,
- petehall347 ,
- jack bah ,
- ion boghean ,
- irval ,
- reza_naderi ,
- ayoub.bouchenni3 ,
- dota1990 ,
- wandy ,
- AgentNovac ,
- Ashiq noor ,
- shadowman0172 ,
- sahilkumar ,
- laststate ,
- saadraa ,
- tmtb ,
- igor40 ,
- sergey060286 ,
- madz9999 ,
- fiixmegreen ,
- jentoris ,
- imranromi ,
- crazy2085 ,
- Mik ibiza ,
- EvilBzyk ,
- Kalman27 ,
- arjwen ,
- markethan ,
- roshan khan ,
- Arshad alam4659 ,
- magnusa3 ,
- bluemoon661 ,
- peste ,
- yep2021 ,
- MMs_ms ,
- RyanRiz ,
- mingzhong ,
- YASİNKNC ,
- nouri170 ,
- RSKostya ,
- Ron7700 ,
- Noursa ,
- takahidehimself ,
- Saim2828 ,
- mosa_ahadi ,
- wernus ,
- Stona1998 ,
- Didds ,
- St3ffMan ,
- Kannan Tamil ,
- SumatekComputers ,
- nemac98 ,
- Raju Kumar ,
- hungkillyou ,
- numanduman ,
- sujit12345 ,
- sadenki ,
- perfm2 ,
- skipron.rm ,
- boguerocha
Badcaps Statistics
Collapse
Topics: 102,432
Posts: 1,271,429
Members: 494,191
Active Members: 16,324
Welcome to our newest member, ion boghean.
Latest Topics
Collapse
-
by Jedi134Hi I have inherited the above desktop scanner, all seems to work correctly but there is no sound output. The only sound I do get from the speaker is the beep confirmation when you press a key. No output from the headphone socket either. Not even radio static with squelch fully turned down, tried a reset by holding 2, 9, and hold buttons but still no sound, does anyone have any experience with these scanners, thanks.
-
Channel: Troubleshooting Audio Equipment
Today, 04:12 AM -
-
by NiroPallHello friends,
Please share this schematic if you have,
EPK50 LA-G07EP REV: 2.0 (HP)
Thank you.-
Channel: Schematic Requests ONLY!
05-07-2024, 02:54 AM -
-
by aminsabbios for laptop model: Aspire one 1-132
snid: 62504891276
probleme : error: turn on but not boot even to the logo
Thank You...-
Channel: BIOS Requests ONLY!
05-06-2024, 02:26 AM -
-
I bought a T12-958 recently with an M8 handle and until now it has worked very well. The tip wasn't earthed but that was easily resolved.
Now, whenever it is switched on, it heats up to about 70*C then shows an [INVER] error on the screen and stops. In order to fix it I have to either unplug and re-plug the handle, or unplug and re-insert the tip from the handle. While doing that it changes to [ERROR], then it finishes heating up and works perfectly. Until it's turned off, after which it will show [INVER] again next time it is turned on.
Any idea what the problem is?05-06-2024, 01:36 PM -
by harpTo ask here... I have few devices with white screen problem, actualy nokia 2220 and some fuji? camera, and try to understand what is common problem to cause that issue.
Yes, both devices work everything else probably ok, I mean, I hear intro melody and keypress click sound, DTMF tone, power on off... all ok.
On desk is nokia 2220 slide, and I check all screen connectors and components arround it, measure voltage drop, but all looks ok. I suspect on slide flex cable, but it look ok and white screen is not interupt while flexing board, pushing conectors, and sliding up down. In attachment...Today, 03:43 AM -
by sitoPlease help me with bios for Asus A516K, no display fan spinning,
SN: MCN0CX34E058524
MB: x415ka R2.0
Model: A516K...-
Channel: BIOS Requests ONLY!
Yesterday, 09:05 PM -
-
by Luís AmaralHello guys, i am working on a X512FF motherboard that comes dead, 19V stops on first mosfet, Gate only have 3v... if a make a bypass laptops works great with no problem... already tested the 5 mosfets, if i remove the current sensor PRS8901, the 19v appear...
Something with the 19V line and the charger detects and stop working !
Any advices ?...05-09-2024, 08:30 AM -
by gjgibHello, this might be embarassing since I consider it a dumb question but keeps me kinda stuck sometimes in my journey.
I want to know if there is any post in this forum which explains my questions. [B]A)[/B] [B]When, where and how do I know when X voltage line is input or output. Example: [/B]
[URL=filedata/fetch?id=3266119&d=1715040463][ATTACH=JSON]{"alt":"Click image for larger version Name:\timage.png Views:\t0 Size:\t151.9 KB ID:\t3266119","data-align":"none","data-attachmentid":"3266119","data-size":"thumb"}[/ATTACH][/URL]...05-06-2024, 08:11 PM -
by NagyeszHey guys, I have a Lenovo Ideapad 320-15ikb NM-B241 rev:1.0.
After turning it on, it runs for a few seconds then shuts off completely. No screen, no fan. After shutdown, a red light comes on and off fast. I've been trying to troubleshoot this for days now. It's never been opened up; the Lenovo sticker is still intact.
(!)I tried with a different BIOS battery, without any ribbon cables, on battery power, without the keyboard, and it's always the same.
Any insights on what might be causing this?...Today, 03:05 AM
Tag Cloud
Collapse
Trending
Collapse
-
by hungbendAcer a315-54-588RCPU: SRFFX EH7LW la-h792p rev:1A bios need
Thanks all.-
Channel: BIOS Requests ONLY!
Yesterday, 11:47 PM -
-
by sitoPlease help me with bios for Asus A516K, no display fan spinning,
SN: MCN0CX34E058524
MB: x415ka R2.0
Model: A516K...-
Channel: BIOS Requests ONLY!
Yesterday, 09:05 PM -
-
by Jedi134Hi I have inherited the above desktop scanner, all seems to work correctly but there is no sound output. The only sound I do get from the speaker is the beep confirmation when you press a key. No output from the headphone socket either. Not even radio static with squelch fully turned down, tried a reset by holding 2, 9, and hold buttons but still no sound, does anyone have any experience with these scanners, thanks.
-
Channel: Troubleshooting Audio Equipment
Today, 04:12 AM -
-
by harpTo ask here... I have few devices with white screen problem, actualy nokia 2220 and some fuji? camera, and try to understand what is common problem to cause that issue.
Yes, both devices work everything else probably ok, I mean, I hear intro melody and keypress click sound, DTMF tone, power on off... all ok.
On desk is nokia 2220 slide, and I check all screen connectors and components arround it, measure voltage drop, but all looks ok. I suspect on slide flex cable, but it look ok and white screen is not interupt while flexing board, pushing conectors, and sliding up down. In attachment...Today, 03:43 AM -
by NagyeszHey guys, I have a Lenovo Ideapad 320-15ikb NM-B241 rev:1.0.
After turning it on, it runs for a few seconds then shuts off completely. No screen, no fan. After shutdown, a red light comes on and off fast. I've been trying to troubleshoot this for days now. It's never been opened up; the Lenovo sticker is still intact.
(!)I tried with a different BIOS battery, without any ribbon cables, on battery power, without the keyboard, and it's always the same.
Any insights on what might be causing this?...Today, 03:05 AM -
by RomanSko1Hello, gentlmen!!!
My HP Probook 430 g2 does not detect battery. I tested the battery on another laptop and it is OK.
I believe smth is wrong with my PC ((.
Searching this forum I found some nice suggestions.
So, I tested Battery Connector pins (charger in/battery out) and here are my results:
pin_1 0v (-)
pin_2 3.30v
pin_3 0v
pin_4 3.38v (SCL)
[B]pin_5 2.55v (SDA)!!![/B]
pin_6 2.25 (+)
As far as I understand SDA pin must be ~3.3v???
Are there any other tests I can do before disassembling motherboard?
I...05-11-2024, 05:22 AM -
by GraphicManHello guys
Because the unit is old (but only occasionally used) the loudness button causes some noise due to bad contact,
sprays did not work, so i decided to solder the pins that it connects on the pcb at the on (loudness on) position
i did that and it worked fine, i know from the bottom of my heart that the switch connects 2 pins and also d/c other 2 pins
on every position it have (6 pin switch), so i was curious what would happen if i clicked the switch off while the pins are soldered at on (so basiclly on and off at the same time), when i did so the sound is gone, nothing...-
Channel: Troubleshooting Audio Equipment
05-05-2024, 06:20 AM -
-
by XIIIHi, i'm not that experienced much with voltage injection, I've had some laptops repaired using this method so please bare with me, I've got this laptop from a customer, the laptop doesn't turn on, no fan spin, no LED indications, no beeps nothing, after taking measurements,I found missing 19 rail after digging around I found that the bq chip was faulty which ive replaced with a known working one, then I found that two of the 4 n-mosfet qm1830 leading the 5v power rail were shorted which I also replaced,now the laptop got the 19v power rail, the 5 and 3v and 1 v rails restored, after checking...Yesterday, 09:14 PM
-
by E--ManHi All,
Thanks for reading. Based on the interesting fact that the vertical lines issue don't seem to effect the menus whatsoever but rather everything around the menu regardless of video is shown, I'm trying to set mine whether the issue is the main board or the t-con board.
Again what's baffling is that the menu is not effected whatsoever. However, any other video displayed regardless of inputs or when no inputs exist exhibits the vertical lines and seem to effect black areas only.
The lines are green in color when the tv is in "Game Mode" and...5 PhotosYesterday, 10:52 AM -
by sourcebfHI FOR ALL,
Dell XPS 15 9510
ST: fgnx2m3
board : GDP51/GDB51 LA-K411P REV:1.0
I'm trying to recover my corrupted BIOS dump, but ME Analyzer v1.96.4 r177 isn't identifying it as containing Intel Management Engine (ME) data. Could someone assist me with this issue?
or help me out to do recover my corrupted bios dump with extracted one from dell web site,
thanks in advance...-
Channel: BIOS Requests ONLY!
Yesterday, 04:24 PM -