|
|
|
|||||||
|
|
Thread Tools | Display Modes |
02-01-2018, 10:28 AM
|
#1 |
|
Leaking Member
Join Date: Dec 2014
City & State: Atlantic Canada
My Country: Canada
Line Voltage: Ground, 0Hz
I'm a: Hobbyist Tech
Posts: 5,172
|
ICT12012-10A Comm Series folds back under load (fixed)
Here is a ICT Comm Series, model ICT12012-10A power supply.
Complaint: Folds back to 9.3V under load (40W VHF radio). So I open this up and see nothing visual. Took another look with my ESR meter. AND? Yeah, all caps besides the main filter cap are bad.  It got a full recap, including the main filter cap.Replaced: C7 200V 330uF, C10 35V 22uF, C15 35V 100uF, C18 35V 47uF, C 27 35V 10uF, C28 63V 47uF, C32 and C33 16V 2200uF. Another PSU saved from being tossed into the bin.   Last edited by CapLeaker; 02-01-2018 at 10:56 AM.. |
|
|
|
02-04-2018, 08:28 PM
|
#2 |
|
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,581
|
Re: ICT12012-10A Comm Series folds back under load (fixed)
How is this unit
__________________
9 PC LCD Monitor 6 LCD Flat Screen TV 30 Desk Top Switching Power Supply 10 Battery Charger Switching Power Supply for Power Tool 6 18v Lithium Battery Power Boards for Tool Battery Packs 1 XBox 360 Switching Power Supply and M Board 25 Servo Drives 220/460 3 Phase 6 De-soldering Station Switching Power Supply 1 Power Supply 1 Dell Mother Board 15 Computer Power Supply 1 HP Printer Supply & Control Board * lighting finished it * These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10% 1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later ) 2 Hem Saw Computer Stack Board All of these had  CAPs POOFAll of the mosfet that are taken out by bad caps
|
|
|
|
|
02-07-2018, 10:47 AM
|
#3 |
|
Leaking Member
Join Date: Dec 2014
City & State: Atlantic Canada
My Country: Canada
Line Voltage: Ground, 0Hz
I'm a: Hobbyist Tech
Posts: 5,172
|
Re: ICT12012-10A Comm Series folds back under load (fixed)
What do you mean? How old is it? 7 years, been running 24/7/365.
|
|
|
|
|
11-26-2021, 07:29 PM
|
#4 |
|
Leaking Member
Join Date: Dec 2014
City & State: Atlantic Canada
My Country: Canada
Line Voltage: Ground, 0Hz
I'm a: Hobbyist Tech
Posts: 5,172
|
Re: ICT12012-10A Comm Series folds back under load (fixed)
I have another exact same power supply on my bench with the exact same problem as the original one.
I did the same thing, recapped everything. Just this one had a new "feature"!  After the recap, the PSU worked just fine as long as I didn't exceed roughly 4 to 4.5A. After that she instantly dropped down to 0.5V.  After a couple of educated guesses, I found out R28 to be the problem. Replaced it and all is good.  |
|
|
|
|
11-27-2021, 04:11 AM
|
#5 |
|
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,581
|
Re: ICT12012-10A Comm Series folds back under load (fixed)
Very good job repairing this power supply Yea one less item in the landfill Last edited by sam_sam_sam; 11-27-2021 at 04:14 AM.. |
|
|
|
|
11-27-2021, 10:24 AM
|
#6 |
|
Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,163
|
Re: ICT12012-10A Comm Series folds back under load (fixed)
hams? use switching power supplies? Thought they'd all go Astron...
(eh... my VHF and UHF radios are connected to an Xbox PSU... yeah, so I use a switching PSU...) |
|
|
|
11-28-2021, 01:32 AM
|
#7 | |
|
Badcaps Veteran
Join Date: Jul 2011
City & State: Some times Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 3,581
|
Re: ICT12012-10A Comm Series folds back under load (fixed)
Quote:
|
|
|
|
|
|
11-28-2021, 10:27 AM
|
#8 |
|
Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,163
|
Re: ICT12012-10A Comm Series folds back under load (fixed)
PSU is a PSU of course of course... what's so special?
Then again I did mod it from 12V to 13.8V IIRC, but I had a vague recollection I or someone posted the mod somewhere. |
|
|
|
|
11-28-2021, 01:16 PM
|
#9 |
|
Solder Sloth
Join Date: Nov 2012
City & State: CO
My Country: USA
Line Voltage: 120VAC 60Hz
I'm a: Hobbyist Tech
Posts: 7,163
|
Re: ICT12012-10A Comm Series folds back under load (fixed)
[Threadjack]
Ahh ... was https://www.badcaps.net/forum/showpo...1&postcount=18 not clear on what I did? I just soldered that 36K resistor on top of R318 so i cid not need to remove the old one. Forgot what the value of the original resistor there.... |
|
|
|
|
11-28-2021, 03:10 PM
|
#10 | ||
|
Leaking Member
Join Date: Dec 2014
City & State: Atlantic Canada
My Country: Canada
Line Voltage: Ground, 0Hz
I'm a: Hobbyist Tech
Posts: 5,172
|
Re: ICT12012-10A Comm Series folds back under load (fixed)
Quote:
Quote:
|
||
|
|
|
 |
| Thread Tools | |
| Display Modes | |
|
|
Linear Mode
