olevia lcd tv killed by cockroach

[kc8adu]

i knew the customer had bugs in the house.
now we know why the tv smoked!

[PeteS in CA]

Re: olevia lcd tv killed by cockroach

When I was at Delta one of our customers sent us 17 failed P/Ss, complaining of a high failure rate. 11 or 12 of them, on opening, had roaches welded onto the bottom of the PCBs. Only after I started the folks in China checking their facilities did our customer inform us that the P/Ss had all come from the same end user . . . who had had . . . a roach infestation. Cockroaches don't handle 300V very well, it would seem.

[starfury1]

Re: olevia lcd tv killed by cockroach

humm yeah nothing worse then when live ones start scurry out when you open something
Ive had a that a few times.

we have big probs with them here (Aust) too.
There are native ones I believe but in cities town they are mostly imports I think

http://www.amonline.net.au/factSheets/cockroaches.htm

page on the big one

http://www.usyd.edu.au/news/84.html?newsstoryid=506

- The Introduced Species


Way before man appeared, Cockroaches ran upon the earth. In fact fossil records show that cockroaches were around long before any dinosaur. Since these early times they have been an essential part of the ecosystems worldwide. Cockroaches are basically our habitat cleaners as they scavenge for food and in the same process assist in the recycling of material that often no other insect would touch.

Simply, cockroaches help maintain a healthy balanced ecosystem. But what about cockroaches that don't live in the bush and instead have come to live inside the house! In the warmer zones of Australia cockroaches are unfortunately found inside the house. There is however a great difference between those living indoors as to those living in the garden or bush.

While cockroaches living in the bush are native species, all cockroaches that live in the house are introduced species. It is these introduced species that have readily accepted our living conditions. While we can all to quickly point the finger at the cockroach as an unwelcomed guest, we must give credit to ourselves for supplying the perfect cockroach environment.

The above an Excerpt from about 2/3 's down this page

http://www.insectfarm.com.au/may2001.htm

Everything you never wanted to know about them...or our co-habitation with them.

Yuk

Cheers

[Krankshaft]

Re: olevia lcd tv killed by cockroach

I hope the Delta power supply manufacturer you're referring to isn't the same Delta Electronics that manufacured the Delta power switching supplies for the original xbox those things were absolute CRAP!

Those had to be the worst designed power supplies I've ever seen.

So whats the deal with that Inverter/PSU fried PWM controller and associated SMT components?

Or did that cockroach weld itself to the primary side I can't tell from the pics?

[starfury1]

Re: olevia lcd tv killed by cockroach

are the orginal Xbox psu's made by this mob Here Krankshaft ?
(I think the logo would be on the pcb)

I got a feeling they are but could be totally wrong

yeah Id be interest to know what it killed to, just out of curiosity
Thanks KC8 if you don't mind

Just on this bug thing

It looks like a stray had got in and got its self KIA'ed
Case seems to be very clean, no crap from an infestation can I see

So it raises an interesting question in my mind

In the old days of linear supplies and low voltages
you would tend to find that they had setup house in the unit.
( nice warm place to live)

With just about everything using switchers these days how often do these little buggers kill electronic items.
How often do you see them calling electronic stuff home these days that have switchers?

Or is it more likely they will kill the device before they establish a colony in them.

although TV set/monitors have had switchers for a long time, so humm

Guess you guys servicing on a day to day basis would have a fair idea on that

Anyway it just had me wondering

Cheers

[Krankshaft]

Re: olevia lcd tv killed by cockroach

are the orginal Xbox psu's made by this mob Here Krankshaft ?
(I think the logo would be on the pcb)

I got a feeling they are but could be totally wrong

Yup thats them and the logo.

They were the reason that Xbox had to release those ridiculous GFCIs. The power plug connector has flimsy plastic clips and some black adhesive holding it on. What happened was the clips broke which cause the two solder joints to bear structurally when you pulled the power plug in and out.

When the joints cracked it caused arcing and so being cheap like Microsoft is rather then release updated supplies to their users they just throw out this band aid.

But they did fix it on newer consoles (how nice right) they simply added 2 rivets to the power plug through the board to anchor it.

Aside from above the supplies were horrible in design too. First off they used proprietary PWM and Power Good Generator ICs with no datasheet in sight.

In addition they weren't worth servicing due to their crappy design anyway they actually relied the parasitic capacitance of their components to run. Any design like that isn't even worth my time.

That cockroach isn't the worst I've seen I remeber seeing a picture of some type of dead lizard under the xbox power supply.

Don't know how it got there considering its size maybe it grew into it? But when it got in contact with the primary lets just say that person ended up with alot of seasoned meat .

[kc8adu]

Re: olevia lcd tv killed by cockroach

all i did was clean the corpse and the carbon it caused off the board.
unit is ok now.
funny the customer reported a sound like frying eggs.
had to tell him it wasnt eggs that were frying! unless the roach was pregnant!

[Krankshaft]

Re: olevia lcd tv killed by cockroach

Hehe I hope that cochroach wasn't pregnant maybe she laid some eggs somewhere else in the TV and will give you more business .

I guess they're not real good conductors I've seen other pests destroy PSUs.

It probably requires a bit of luck though depending on where they step that one looks like it got really close to the PWM controller .

[PeteS in CA]

Re: olevia lcd tv killed by cockroach

That is the company for which I worked. The X-Box P/S was slightly after my time there (and probably would have been supported by Delta's Portland, OR office rather than the Fremont, CA officem where I worked), so I don't have experience with that product. Keep in mind that MS may have specified that AC connector or spec'ed the P/S in a way that forced using it.

The problem with the P/Ss I referred to above was caused by a cockroach infestation at an end user's site, not at any Delta facility. The roaches liked the warm, dark, computer cases.

[starfury1]

Re: olevia lcd tv killed by cockroach

How to roast a cockroach without trying

Yeah on the psu,thats what I thought it was made by them
I heard of issues but never really looked into it

Seem they get a fairly good rap as a computer supply but thats not to say it was made to some specs of MS (as PeteS said )
( or for that matter, they were just given production for it not design, I don't know but possible I suppose... PeteS would probably know if thats likely to have happened)

Yeah that would be a good one PeteS

Listen till you get rid of your pet cockroaches you are going to keep blowing PSU....how do you say that in a nice way.

they are are a problem
I don't know how some people live with them crawling all over the place
but I know there are people that do...

Cheers

[PeteS in CA]

Re: olevia lcd tv killed by cockroach

Computer mfrs used to design their own P/Ss long ago (the 70s and 80s), but now it's more like Burger King. They specify form factor, mounting points, safety and EMC standards/agencies, volts and amps, protection features, harnesses and connectors. Companies like Delta or Lite On do the electrical and internal mechanical design to fit the customer's spec. Delta also has a line of off-the-shelf products that they sell to smaller integrator companies.

[starfury1]

Re: olevia lcd tv killed by cockroach

so most likely the design was Delta from specs requirements given by MS.

[PeteS in CA]

Re: olevia lcd tv killed by cockroach

Big mfrs - HP/Compaq, Cisco, Dell, Apple, etc. - usually buy custom. They want to control things like currents, form factor, harness & connectors, protection features, materials (some banned bromine compounds and CFCs long before RoHS) and components. Apple, for instance in 2000 used what looked like a standard ATX P/S ... but the harnesses were really long, and the pin that is -5V in ATX was used for an extra +3.3v pin (permitting an extra 3 or 4 amps of +3.3V current - Mini-Fit Jr. pins are rated for 5A max.).

[hardwareguy]

Re: olevia lcd tv killed by cockroach

Now that's what I call a BUG ZAPPER!

Seriously, I've seen this all too often and these little SOBs can really cause damage.

[Wizard]

Re: olevia lcd tv killed by cockroach

I had a ansian beetle kill itself in a Samsung that came in dead with frying noises. All I do is pick it out and monitor is fine.

Cheers, Wizard

[nat0snake]

Re: olevia lcd tv killed by cockroach

Yup thats them and the logo.

They were the reason that Xbox had to release those ridiculous GFCIs. The power plug connector has flimsy plastic clips and some black adhesive holding it on. What happened was the clips broke which cause the two solder joints to bear structurally when you pulled the power plug in and out.

When the joints cracked it caused arcing and so being cheap like Microsoft is rather then release updated supplies to their users they just throw out this band aid.

But they did fix it on newer consoles (how nice right) they simply added 2 rivets to the power plug through the board to anchor it.

Aside from above the supplies were horrible in design too. First off they used proprietary PWM and Power Good Generator ICs with no datasheet in sight.

In addition they weren't worth servicing due to their crappy design anyway they actually relied the parasitic capacitance of their components to run. Any design like that isn't even worth my time.

That cockroach isn't the worst I've seen I remeber seeing a picture of some type of dead lizard under the xbox power supply.

Don't know how it got there considering its size maybe it grew into it? But when it got in contact with the primary lets just say that person ended up with alot of seasoned meat .

Hmmm Are you sure you are talking about the delta power supply's? I have read that its mostly the foxlink power supply's causing the problems.

[Wizard]

Re: olevia lcd tv killed by cockroach

I forgot to add, I had a RCA D52Wxx come in with frying noise and few days later, putrid smell leaking out of TV. Scratched my head and looked. oooooooooooh! Rotting garter snake under the B+ supply board for horizontal circuit. Phew!

Good thing I was wearing surgical gloves.

Cheers, Wizard

[NxB]

Re: olevia lcd tv killed by cockroach

I never open things on my lap anymore.

[PCBONEZ]

Re: olevia lcd tv killed by cockroach

I pulled the heads off an engine once and found a nest full of pissed off wasps in one of the cylinders.

Can you say; RUN!

.

[kc8adu]

Re: olevia lcd tv killed by cockroach

I pulled the heads off an engine once and found a nest full of pissed off wasps in one of the cylinders.

Can you say; RUN!

.

wait till you go to work inside a server in a woodshop in a polebarn.was full of mice.
and another surprise in the form of a huge paperwasp nest awaits inside.it was cool that morning or i would have gotten stung up opening that case.