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13mh13 started a topic Aluminum SMD caps vs thru hole caps (reliability)

in General Capacitor Questions & Issues

04-05-2024, 07:41 PM
Aluminum SMD caps vs thru hole caps (reliability)

The PCB motor for 1987 Technics SLP-120 CD player has slow spin-up issues. Similar to what another tech in the below video reported.

[url]https://i.postimg.cc/kGrR6BpZ/image.jpg[/url]

[ATTACH=JSON]{"data-align":"none","data-size":"full","title":"image.jpg","data-attachmentid":3248192}[/ATTACH]

I replaced the three bi-polar 47uF electros but that made no difference. The orig three bi-polar 47uF electros tested okay on my ESR M-tester.
I have not tested/replaced those alum. SMD...

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13mh13 started a topic (47 or 50 Ohm) resistor hack at pin 5-6

in Troubleshooting Computer Displays

07-30-2022, 02:55 AM
(47 or 50 Ohm) resistor hack at pin 5-6

I have[URL="https://www.badcaps.net/forum/showthread.php?t=25242&highlight=NT68F63"] read about this hack for Samsung monitors[/URL] with a potentially bad micro-controller chip, NT68F632--Novatek :

[url]http://www.datasheet-pdf.com/PDF/NT68F632-Datasheet-Novatek-945645[/url]

[URL="https://www.eevblog.com/forum/repair/samsung-syncmaster-1100df-crt-monitor-(on-issues)/msg4329484/"]I have a 2003 CRT Samsung 1100DF Syncmaster with "On" issues.[/URL]

Please help! Thx!I have[URL="https://www.badcaps.net/forum/showthread.php?t=25242&highlight=NT68F63"]

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Last edited by 13mh13; 07-30-2022, 02:57 AM.
13mh13 replied to Dell 5100 laptop with bad video card and/or display (or what???)

in Troubleshooting Laptops, Tablets, and Mobile Devices

06-08-2022, 11:40 PM
Re: Dell laptop with bad video card and/or display (or what???)

UPDATE:
Connected an external VGA monitor and then did a Fn+F8 to switch to the external monitor .... and I have a good display.
So I assume the LCD panel is toast? Or is it? Can it be some connector / corrosion issue?

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13mh13 started a topic Dell 5100 laptop with bad video card and/or display (or what???)

in Troubleshooting Laptops, Tablets, and Mobile Devices

06-08-2022, 10:18 PM
Dell 5100 laptop with bad video card and/or display (or what???)

Laptop: Dell 5100 (2003). Note this is a different 5100 than the one I posted about in the 5100 memory/RAM thread elsewhere on Badcaps. I bought this (2nd) 5100 from local thrift store, for parts or possible full repair. I have no clue as to its history.

When the pwr button is displayed, I should get the BIOS bootup screen (there is no HDD in this laptop). But I get a fuzzy, distorted screen:

[B]It [U]should[/U] look like this:[/B]

I'm getting no LED (coded) error message, and the other functions like...

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Last edited by 13mh13; 06-08-2022, 10:22 PM.
13mh13 replied to Dell Inspiron 5100 (2003) with RAM issues (voltage, PSU suspect ??)

in Troubleshooting Laptops, Tablets, and Mobile Devices

06-07-2022, 11:50 AM
Re: Dell Inspiron 5100 (2003) with RAM issues (voltage, PSU suspect ??)

Which IC(s)? The voltage regulators? Etc.
TTBOMK, IC's either fail or work. If an IC was bad, then the issue I noted would be more severe, the laptop not usable or dependable.
As I noted, this laptop, when powered on can operate normally (and very reliable) for months if power is not interrupted or BSOD (rare) occurs. In fact, when poere on, even at 19 years old, this laptop is the epitome of dependability or reliability....

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13mh13 replied to Dell Inspiron 5100 (2003) with RAM issues (voltage, PSU suspect ??)

in Troubleshooting Laptops, Tablets, and Mobile Devices

06-06-2022, 10:36 PM
Re: Dell Inspiron 5100 (2003) with RAM issues (voltage, PSU suspect ??)

Okay .... let's get back to some basics about memory specs for the 5100:
The SODIMM's in the 5100 are spec'd to:
Type: 3.3v SODIMM
Freq: 266 Mhz
128, 256, 512 MB. (I assume, for each of the two slots)
Maximum memory is: "1GB"
Other: PC2100

Not sure about that 3.3v spec (in Dell manual), because all my sticks contain 2.5 or CL25 in their code. 2.5v I assume. Is that V_min? Does the 5100 provide up to 3.3v (max) for sticks?

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13mh13 replied to Dell Inspiron 5100 (2003) with RAM issues (voltage, PSU suspect ??)

in Troubleshooting Laptops, Tablets, and Mobile Devices

06-06-2022, 10:00 PM
Re: Dell Inspiron 5100 (2003) with RAM issues (voltage, PSU suspect ??)

I don't know as I have not disassembled it THAT far. It's a daily-use device that must be active as much as possible. I guess you could call it a "medically-critical" or "life-functions critical" device.
Do you know of a source for the service schematic? I have the SM, but not the schematic....

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Last edited by 13mh13; 06-06-2022, 10:12 PM.
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13mh13 started a topic Dell Inspiron 5100 (2003) with RAM issues (voltage, PSU suspect ??)

in Troubleshooting Laptops, Tablets, and Mobile Devices

06-06-2022, 08:44 PM
Dell Inspiron 5100 (2003) with RAM issues (voltage, PSU suspect ??)

Here's my device:
LAPTOP: Dell Inspiron 5100 (2003) 2.4Ghz p4, dual-boot: Windows XP pro, sp1 + LinuxMint ( LM 17.1 MATE ), with 128GB ssd, 512mb ddr sodimm.

The 5100 runs fine, even after 19 years of daily, gentle use, "always on", and on adapter power only.
HOWEVER, over the past 5-6 years there has been a restart-up issue (after power down or power loss --- I leave all my PCs/laps in daily use in ALWAYS-ON condition, even going months w/o re-boots, but the inevitable always happens) .
Seconds to few mins after pressing the power button to restart...

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13mh13 replied to New Members - please post your introductions here

in Announcements & Related News

06-06-2022, 02:15 PM
Re: New Members - please post your introductions here

Hello!
Just found this forum .... and immediately I need to use its experienced member base for a troubleshooting issue.
Other forms I use are: diyaudio.com, tom's hardware, Linux Mint (forum), Tech Support Forum and EEV Blog.
I daily use a mixture of old (but not ancient) gear as well as the latest toys!

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Aluminum SMD caps vs thru hole caps (reliability)

(47 or 50 Ohm) resistor hack at pin 5-6

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Dell 5100 laptop with bad video card and/or display (or what???)

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Dell Inspiron 5100 (2003) with RAM issues (voltage, PSU suspect ??)

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