Tmp-ans Lc B350atx

**willawake** · 11-10-2005, 02:25 AM

Canicon 1000uf10V looks bulging. I will replace. The PSU is still performing fine though.

**kc8adu** · 11-10-2005, 12:50 PM

those are junk when new.
they tend to trash mobo's when they die .
here is the cure.
like a bug you just have to step on em.

Chris1992 · 11-10-2005, 01:18 PM

Will, I agree with kc8 and congrats on getting quoted in the cNet article that pauloncall posted about.

**willawake** · 11-10-2005, 02:24 PM

Quote:

those are junk when new.
they tend to trash mobo's when they die

came with a cheap case. i guess i wont be repairing it then. many thanks for the advice.
user can have my old veden 300w which has been running 24/7 for years. i wish we had more $$$ for the office.

**willawake** · 11-10-2005, 02:34 PM

Quote:

congrats on getting quoted in the cNet article that pauloncall posted about

i didnt even say that. but yes i dont recommend for beginners to try to recap an in-warranty board before the caps start failing. especially something proprietary like a G4. leave that to the pros. out of warranty who cares if the job is messed up, the board was useless anyway.

anyway the more press on the badcap issue the better until someone starts doing something about it.

Rainbow · 11-10-2005, 02:36 PM

I save dead crap PSUs - as component source for other PSU repairs

However, if it works, replace the bad cap (and better also other Canicons too, if any). I see an optocoupler there, so at least it should not burn everything while turned off.

japlytic · 11-10-2005, 06:57 PM

The bulging capacitor is used in the +5V standby rail (If this rail fails, you can't start your computer!

)

Are there any Gincon capacitors in it? (You should find two of them)

The chip is marked "2003", as shown in the pictures - most likely to be a poor quality one. Some quality power supplies from big manufacturers have their own chips in them.

My LC-B400ATX supply was almost identical to these pictures. I'm glad I scrapped it before it damaged my system!

PeteS in CA · 11-10-2005, 11:16 PM

That is a 350W P/S?!

I'd be afraid to use it for more than 250W. Those heatsinks and that power transformer are going to get really hot at 350W. I'd love to know what the ratings are of the +5V and +3.3V O/P rectifers. If the part numbers look something like MBR4060DT, the "40" means its rated for 40A, and the "60" means the peak inverse voltage is 60V.

**willawake** · 11-11-2005, 02:44 AM

found another one in the "use if desperate" box.
different brand, same psu board Y-B200ATX Ver 2.9

japlytic · 11-11-2005, 04:36 AM

Very similar circuits of this unit can be found on http://narod.yandex.ru/100.xhtml?ele...Y-B200-ATX.zip and http://www.eserviceinfo.com/download.../L&C_400W.html

I can also see electrolytics with an unknown manufacturer's logo in the attached picture.

As with my unit, the electrolytics (as well as the output rectifiers and the heatsink) were a bit under-rated.

Newbie2 · 11-11-2005, 06:39 AM

Commonly every PSU model number starting in "LC" means that it's an crappy L&C power supply. Those caps with a logo of a planet in L&C power supplies are generic caps.

na064 · 06-04-2006, 09:09 AM

what is replace for FET Q3 SSS2N60A ?

PeteS in CA · 06-04-2006, 03:44 PM

na064,

That looks to be an very obsolete Samsung part - TO-220, 600V, 2A, 5 Ohm, N-channel. SAmsung MOSFETs were acquired some time ago by Fairchild. This looks like a decent replacement. It's same package and voltage, 3A, 3.4 Ohm; it's probably faster, with a lower gate charge (easier to drive) than the original.

11-10-2005, 01:18 PM	#3
Chris1992 Badcaps Veteran Join Date: Apr 2005 City & State: Michigan, USA Posts: 557	Re: Tmp-ans Lc B350atx Will, I agree with kc8 and congrats on getting quoted in the cNet article that pauloncall posted about. __________________ The great capacitor showdown!

11-10-2005, 02:36 PM	#6
Rainbow Badcaps Veteran Join Date: Aug 2005 City & State: Slovakia Posts: 1,080	Re: Tmp-ans Lc B350atx I save dead crap PSUs - as component source for other PSU repairs However, if it works, replace the bad cap (and better also other Canicons too, if any). I see an optocoupler there, so at least it should not burn everything while turned off.

11-10-2005, 06:57 PM	#7
japlytic Badcaps Veteran Join Date: Oct 2005 City & State: Rockhampton, Queensland, Australia My Country: Australia Line Voltage: 240VAC 50Hz I'm a: Hobbyist Posts: 1,295	Re: Tmp-ans Lc B350atx The bulging capacitor is used in the +5V standby rail (If this rail fails, you can't start your computer! ) Are there any Gincon capacitors in it? (You should find two of them) The chip is marked "2003", as shown in the pictures - most likely to be a poor quality one. Some quality power supplies from big manufacturers have their own chips in them. My LC-B400ATX supply was almost identical to these pictures. I'm glad I scrapped it before it damaged my system! __________________ My first choice in quality Japanese electrolytics is Nippon Chemi-Con, which has been in business since 1931... the quality of electronics is dependent on the quality of the electrolytics.

11-10-2005, 11:16 PM	#8
PeteS in CA Badcaps Veteran Join Date: Aug 2005 City & State: San Jose, CA My Country: USA, Unsure of Planet Line Voltage: 120VAC, 60Hz & 115VAC, 400Hz I'm a: Professional Tech Posts: 1,576	Re: Tmp-ans Lc B350atx That is a 350W P/S?! I'd be afraid to use it for more than 250W. Those heatsinks and that power transformer are going to get really hot at 350W. I'd love to know what the ratings are of the +5V and +3.3V O/P rectifers. If the part numbers look something like MBR4060DT, the "40" means its rated for 40A, and the "60" means the peak inverse voltage is 60V. __________________ PeteS in CA Republican Operative discussion forums Where might is right There is no right. - Sophocles in "Antigone" ************************** All that is gold does not glitter, Not all those who wander are lost; - J.R.R. Tolkien, The Fellowship of the Ring ************************** To kill personal responsibility, initiative or success, punish it by taxing it. To encourage irresponsibility, improvidence, dependence and failure, reward it by subsidizing it.

11-11-2005, 04:36 AM	#10
japlytic Badcaps Veteran Join Date: Oct 2005 City & State: Rockhampton, Queensland, Australia My Country: Australia Line Voltage: 240VAC 50Hz I'm a: Hobbyist Posts: 1,295	Re: Tmp-ans Lc B350atx Very similar circuits of this unit can be found on http://narod.yandex.ru/100.xhtml?ele...Y-B200-ATX.zip and http://www.eserviceinfo.com/download.../L&C_400W.html I can also see electrolytics with an unknown manufacturer's logo in the attached picture. As with my unit, the electrolytics (as well as the output rectifiers and the heatsink) were a bit under-rated.

11-11-2005, 06:39 AM	#11
Newbie2 Badcaps Veteran Join Date: Sep 2005 City & State: Halifax, NS My Country: Canada Line Voltage: 120VAC 60Hz I'm a: Complete Noob! Posts: 859	Re: Tmp-ans Lc B350atx Commonly every PSU model number starting in "LC" means that it's an crappy L&C power supply. Those caps with a logo of a planet in L&C power supplies are generic caps. __________________ My gaming PC: AMD Phenom II X6 1090T Black Edition 3.2GHz six-core processor (Socket AM3) 16GB G.SKILL Value Series DDR3-1333 RAM (4x4GB dual channel) ASUS M4A77TD motherboard XFX AMD Radeon HD6870 1GB GDDR5 PCI-Express x16 2.1 video card (HD-687A-ZHFC) 1.5TB Samsung EcoGreen F2 HD154UI SATA-II Hard Drive Antec HCG-400 400W ATX12V v2.3 80 PLUS BRONZE Power Supply Microsoft Windows 7 Ultimate SP1 64-bit Antec Three Hundred mid-tower case Last edited by Newbie2; 11-11-2005 at 06:41 AM..

06-04-2006, 09:09 AM	#12
na064 New Member Join Date: Jun 2006 Posts: 1	Re: Tmp-ans Lc B350atx what is replace for FET Q3 SSS2N60A ?

06-04-2006, 03:44 PM	#13
PeteS in CA Badcaps Veteran Join Date: Aug 2005 City & State: San Jose, CA My Country: USA, Unsure of Planet Line Voltage: 120VAC, 60Hz & 115VAC, 400Hz I'm a: Professional Tech Posts: 1,576	Re: Tmp-ans Lc B350atx na064, That looks to be an very obsolete Samsung part - TO-220, 600V, 2A, 5 Ohm, N-channel. SAmsung MOSFETs were acquired some time ago by Fairchild. This looks like a decent replacement. It's same package and voltage, 3A, 3.4 Ohm; it's probably faster, with a lower gate charge (easier to drive) than the original.

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