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Search: Posts Made By: Toasty
Forum: Other Devices with Bad Capacitors 12-15-2017, 02:24 PM
Replies: 143
Views: 26,964
Posted By Toasty
Thumbs up Re: Suspect Bad PS Apple AcBel API 1PC36

https://www.badcaps.net/forum/images/icons/icon14.gif
Forum: Other Devices with Bad Capacitors 12-13-2017, 09:48 PM
Replies: 143
Views: 26,964
Posted By Toasty
Talking Re: Suspect Bad PS Apple AcBel API 1PC36

While you're at it, would you change the Yellow dots to something that contrasts better? Orange, purple, polka-dot... :tongue:
Forum: Troubleshooting Power Supplies and Power Supply Design 11-26-2017, 10:52 AM
Replies: 120
Views: 40,774
Posted By Toasty
Re: Power Mac G4 MDD "Mirror-Door" won't power up

It all comes down to which supplier has what caps in stock. The price per unit is typically very close if not exactly the same. The quantity discounts are where myself and others make our decisions...
Forum: Troubleshooting Power Supplies and Power Supply Design 11-10-2017, 07:18 AM
Replies: 143
Views: 33,221
Posted By Toasty
Re: iMac 24 PSU LITEON PA-3241-02A1 250W

You said: "initially this imac has an issue on graphic card "

Was the graphic card replaced?

You might have to do that. Especially if it overheated.

These problems started with the...
Forum: Troubleshooting Power Supplies and Power Supply Design 11-08-2017, 10:28 AM
Replies: 143
Views: 33,221
Posted By Toasty
Re: iMac 24 PSU LITEON PA-3241-02A1 250W

If the cover is on or off will make no difference. It will work.

What is the Apple model number of the iMac?

Here: https://everymac.com/ultimate-mac-lookup/

Can you provide some clear...
Forum: Troubleshooting Power Supplies and Power Supply Design 10-31-2017, 05:35 AM
Replies: 143
Views: 33,221
Posted By Toasty
Re: iMac 24 PSU LITEON PA-3241-02A1 250W

Being inexperienced, I would replace the power supply. Because of the smoke you saw, don't even bother attempting to fix it.

The other technician apparently screwed something up.

T
Forum: Troubleshooting TVs and Video Sources 10-29-2017, 02:51 PM
Replies: 1
Views: 309
Posted By Toasty
Re: Vizio VP422 random bright then dim display

*BUMP*

Anyone?

With so many TV guys on here, I figured at least a couple of clues where to start...

T
Forum: Troubleshooting TVs and Video Sources 10-26-2017, 11:42 AM
Replies: 1
Views: 309
Posted By Toasty
Exclamation Vizio VP422 random bright then dim display

Customer's wall mounted TV. Repaired 10 months ago for bad PSU caps except for mains cap.

Recently it began going from normal brightness to a bit dim then back. Cycles several times a minute and...
Forum: Troubleshooting Power Supplies and Power Supply Design 10-15-2017, 04:52 PM
Replies: 65
Views: 20,444
Posted By Toasty
Re: Recapping Antec SmartPower SP350 and SP400

Updated above post with info and datasheet.

T
Forum: Troubleshooting Power Supplies and Power Supply Design 10-15-2017, 04:27 PM
Replies: 65
Views: 20,444
Posted By Toasty
Re: Recapping Antec SmartPower SP350 and SP400

Picture from this thread:

https://www.badcaps.net/forum/showthread.php?t=31149


Picture: https://www.badcaps.net/forum/attachment.php?attachmentid=69689


While it -has- the fan controller...
Forum: Troubleshooting Power Supplies and Power Supply Design 10-15-2017, 04:15 PM
Replies: 65
Views: 20,444
Posted By Toasty
Re: Recapping Antec SmartPower SP350 and SP400

No diagrams that I've seen. Only what some folks have drawn out.

I suspect you have an issue with the start circuit.

Too long since I had mine open. Does that have the little vertical board...
Forum: Troubleshooting Power Supplies and Power Supply Design 10-15-2017, 10:44 AM
Replies: 65
Views: 20,444
Posted By Toasty
Re: Recapping Antec SmartPower SP350 and SP400

Hello and welcome!

Let's make sure I understand what you are saying -

When you short PS_ON to ground, the supply does not come on, correct?

T
Forum: Troubleshooting Power Supplies and Power Supply Design 10-06-2017, 03:06 PM
Replies: 40
Views: 1,805
Posted By Toasty
Re: Advice on LG DVD player blown power supply

He did? Last video was just 2 weeks ago...???
Forum: Troubleshooting Power Supplies and Power Supply Design 10-06-2017, 02:29 PM
Replies: 40
Views: 1,805
Posted By Toasty
Re: Advice on LG DVD player blown power supply

Please specify the sources. I've never heard that load of crap before.

Lowest I've had them start to work is ~50-60V. Not loading it mind you, just operational.

3kW! Lucky you!

T
Forum: Troubleshooting Power Supplies and Power Supply Design 10-06-2017, 01:47 PM
Replies: 40
Views: 1,805
Posted By Toasty
Arrow Re: Advice on LG DVD player blown power supply

I disagree with using halogens for testing. Because of the lower cold resistance, too much current can pass, effectively defeating the series bulb's purpose.

They're good for load testing...
Forum: Troubleshooting Power Supplies and Power Supply Design 10-03-2017, 10:22 AM
Replies: 143
Views: 33,221
Posted By Toasty
Re: iMac 24 PSU LITEON PA-3241-02A1 250W

Why not just fix the one you have? One of the easier ones as no caps are buried under a heatsink.

T
Forum: Troubleshooting Power Supplies and Power Supply Design 09-27-2017, 01:16 PM
Replies: 40
Views: 1,805
Posted By Toasty
Re: Advice on LG DVD player blown power supply

Chokes are in -series- with power lines. For testing, you can jumper them.

Desolder them. You may find they burned off just at the base pins.

T
Forum: Troubleshooting Power Supplies and Power Supply Design 09-27-2017, 01:03 PM
Replies: 40
Views: 1,805
Posted By Toasty
Re: Advice on LG DVD player blown power supply

It's a Sanken SC6700. Again, available from China & eBay. I can't locate a valid datasheet either.

T
Forum: Troubleshooting Power Supplies and Power Supply Design 09-27-2017, 11:53 AM
Replies: 40
Views: 1,805
Posted By Toasty
Arrow Re: Advice on LG DVD player blown power supply

>>Probably headroom for inrush currents.<<

Correct. The thermistor limits the initial surge. It is -rated- at 4A continuous.

SCK-054 = 5Ω initial resistance, 4A continuous current

Ex: ...
Forum: Troubleshooting Power Supplies and Power Supply Design 09-27-2017, 11:24 AM
Replies: 40
Views: 1,805
Posted By Toasty
Question Re: Advice on LG DVD player blown power supply

The damage there looks to be from the bridge rectifier shorting. The thermistor/inrush current limiter TH901 didn't blow, nor did the 2 - 0.15Ω source resistors which effectively present 0.075Ω.
...
Forum: Troubleshooting Power Supplies and Power Supply Design 09-27-2017, 09:00 AM
Replies: 40
Views: 1,805
Posted By Toasty
Re: Advice on LG DVD player blown power supply

Even the model number as I asked waaaay back there... ^ ^ ^

T
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-27-2017, 08:41 AM
Replies: 6
Views: 1,029
Posted By Toasty
Arrow Re: Hp pavilion dv6 with no power

Elektrotanya.com (https://elektrotanya.com)

HP PAVILION DV6 DV7 QUANTA UT12 REV 1A SCH (https://elektrotanya.com/hp_pavilion_dv6_dv7_quanta_ut12_rev_1a_sch.pdf/download.html)

Attached PDF is...
Forum: Troubleshooting Power Supplies and Power Supply Design 09-26-2017, 03:35 PM
Replies: 40
Views: 1,805
Posted By Toasty
Re: Advice on LG DVD player blown power supply

>>at most, it should shut down to protect itself<<

Unless that part of the circuit is faulty also.

Don't know your experience level so, sorry, I had to ask the question about the mains cap. :D...
Forum: Troubleshooting Laptops, Portable, and Mobile Devices 09-26-2017, 03:10 PM
Replies: 6
Views: 1,029
Posted By Toasty
Re: Hp pavilion dv6 with no power

Is it an HP charger or a knock-off?

I've seen knock-offs burn up the laptop charger circuits.

If it's an HP, the wiring from the charger may be faulty. Usually at the plug end. There is a...
Forum: Troubleshooting Power Supplies and Power Supply Design 09-26-2017, 01:23 PM
Replies: 40
Views: 1,805
Posted By Toasty
Re: Advice on LG DVD player blown power supply

It is odd to see the input filter chokes burn like that. They are replaceable.

The mains filter cap was likely the original failure that took out the FETs. I hope you replaced it with a correct...
Showing results 1 to 25 of 500

 
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