vp2130b cap help

[endevite]

This is to solve the monitor slow start 1.5minute problem on vp2130b, cracked open and a heap of bad caps were found.

Ok here goes, on the inverter board are 3 CapXon GF 35v 180uf 8x16.5 caps, the CapXon datasheet for GF series does not show ripple max or anything for the 35v 180uf caps as if they never existed.

I was looking at chemi-con LXY series 50v 180uf caps, as it has higher ripple support for the 220uf vs 220uf on GF vs LXY (compared the 220's because I cannot find data on the 180's), anyone else have any input?

Also there is a Taicon (PW)P cap (not bad but don't trust) on the powersupply that I cannot identify due to glue which took the label with it, the top of the cap I can see what looks to be the tail end of *5v 220uf, it measures 8x12mm and bright green. Could it be 25v? Nichicon PW series 25v 220uf 8x11.5 @ 555 ripple seems closest?

Also for anyone who runs into this monitor (same guts as 2030b from what I understand), on the mainboard, all green Teapo caps are blown, 6x 25v 100uf Teapo SC 6.3x11mm and 2x 6.3 1000uf Teapo SM 8x15mm. USB board had no blown caps but I've read all six 25v 100uf 6.3x11mm Teapo SC series go on the usb board, so I'll be replacing those as well.

List as follows,
12x Teapo SC 25v 100uf 6.3x11mm 250 Ripple 0.220 ESR
2x Teapo SM 6.3v 1000uf 8x15mm 850 Ripple 0.053 ESR
3x CapXon GF 35v 180uf 8x16.5 ???? ????
1x Taicon (PW)P *5v 220uf 8x12mm ???? ????

Pictures included, and any cap replacement advice would be appreciated.
(psu1 and psu2 images show the green cap, inverter shows the 180uf 35v, and the mainboard images show the 6 bad 25v 100uf's and 2 bad 6.3v 1000uf's)

[endevite]

Re: vp2130b cap help

Wont let me edit again, can someone update the title to "Viewsonic vp2130b cap help", thank you.

[endevite]

Re: vp2130b cap help

Update found the capxon 35v 180uf info, 810ripple low impedance. the chemi-con lxy 35v 180 has only 550 ripple and the 50v is to large, kze is no go aswell.

Any suggestions on a 180uf low imp cap with 810 or better ripple that fits in the department of 8x16? Perhaps a LXZ 50v 180uf 10x16 ELXZ500ESS181MJ16S?

[endevite]

Re: vp2130b cap help

Update found the capxon 35v 180uf info, 810ripple low impedance. the chemi-con lxy 35v 180 has only 550 ripple and the 50v is to large, kze is no go aswell.

Any suggestions on a 180uf low imp cap with 810 or better ripple that fits in the department of 8x16? Perhaps a LXZ 50v 180uf 10x16 ELXZ500ESS181MJ16S?

Even though it has a higher rated impedance. 0.13 /0.26 vs the capxon 0.098/0.28.

[endevite]

Re: vp2130b cap help

Anyone have any input at all? Should I just go with that cap?

[Tiger5007]

Re: vp2130b cap help

i have the same monitor. it was okay until last summer. once it's on for awhile it just turns off and the seconds later back on. so i was assuming the inverter had problems. i was poking around to find the 3 replacement caps 180uf 35v capxon, that's how i ended up on this site. did you find an answer yet? i could use some help with fixing my monitor too. thanks.

[endevite]

Re: vp2130b cap help

i have the same monitor. it was okay until last summer. once it's on for awhile it just turns off and the seconds later back on. so i was assuming the inverter had problems. i was poking around to find the 3 replacement caps 180uf 35v capxon, that's how i ended up on this site. did you find an answer yet? i could use some help with fixing my monitor too. thanks.

I believe I have come up with an answer, should be a simple enough fix, I will have pictures and part numbers posted once the parts show up, ordered them sunday, so they should be here soon.

[momaka]

Re: vp2130b cap help

Not sure what advice to give you about the CapXon GF caps. In some circuits, ESR and Ripple ratings might be more important than the uF rating, in others it might be the other way around. Do you know how the caps are connected on the board? If those CapXon GF caps are just part of the filter for the main power supply, it probably will be better to stick to similar ESR and Ripple ratings. In that case, going up a notch on the capacitance *might* not hurt the circuit (the next value up is 220uF which is just slightly over 20% of the original 180uF value).

I looked up some 220uF 35v caps, and the closest I could find that would meet the specs of those CapXon GF (assuming their ratings are not bogus - and they could as well be) was Chemicon KZE 220uF 35v in a 8x15 size. Ripple and ESR for those are 0.056/0.17 mOhms and 995mA respectively.

[endevite]

Re: vp2130b cap help

Not sure what advice to give you about the CapXon GF caps. In some circuits, ESR and Ripple ratings might be more important than the uF rating, in others it might be the other way around. Do you know how the caps are connected on the board? If those CapXon GF caps are just part of the filter for the main power supply, it probably will be better to stick to similar ESR and Ripple ratings. In that case, going up a notch on the capacitance *might* not hurt the circuit (the next value up is 220uF which is just slightly over 20% of the original 180uF value).

I looked up some 220uF 35v caps, and the closest I could find that would meet the specs of those CapXon GF (assuming their ratings are not bogus - and they could as well be) was Chemicon KZE 220uF 35v in a 8x15 size. Ripple and ESR for those are 0.056/0.17 mOhms and 995mA respectively.

Jist of it is a close match to the ratings of 3x CapXon GF Caps in parallel (as the inverter circuit runs them in parallel) @ 32.667mohms total, 180uf ea @ 540 total, 35v and 810 @ 2430 total ripple max. The fix rates at 50v KY 2x120uf/2x150uf caps, with clearance @ 540uf total and 30mohm total , 2980 total ripple. The new caps are also 7k hour rated vs the 3k hour rated originals. The fix? using 4 caps instead of 3, I'll test it before giving part numbers and pictures but all and all should be very easy for anyone to do.

There is no clean fix drop in for the 35v 180uf capxon GF series caps, their designed ratings are pretty unheard of, most options involve caps that wont fit physically or are way way off in ratings. I've gone over every datasheet for just about every reliable low impedance low esr cap from the moderate to the high end of what you can buy.

You could go with a 220 and a 330 and end up with a 550uf rating but impedance way way lower than spec, or you could go with a 120/150/270 combo but then space becomes an issue. The only thing that really fits is a 120/150 - 120/150 setup with a bridge on the second 120/150 set to makeshift a center position mounting point 270.

Space wise 8x15,10x12.5,8x15,10x12.5 setup works best. Again I'll have photos posted once I have the replacement caps.

Here is a picture of the proposed augment in mind, back of the board of course, red is existing cap positions, blue lines are bridges on the top of the board, green is the augment cap location, pink is the jumper setting the 7.5 rating for the ccfls.

[tj2]

Re: vp2130b cap help

Update found the capxon 35v 180uf info, 810ripple low impedance. the chemi-con lxy 35v 180 has only 550 ripple and the 50v is to large, kze is no go aswell.

Any suggestions on a 180uf low imp cap with 810 or better ripple that fits in the department of 8x16? Perhaps a LXZ 50v 180uf 10x16 ELXZ500ESS181MJ16S?

That CapXon GF has an 0.098 Ohm ESR.

Nichicon HE 50 V 180 uF 8x15 has 910 mA ripple and 0.091 Ohm ESR. It looks very close to what you want.

You could also go with Panasonic FMs, 35 V 220 uF or 150 uF, both 8 mm diameter. Their ripples are 1240 and 950 mA respectively and their ESRs are 0.041 and 0.056 Ohm. The only trouble here is that you are changing the capacitance a little bit.

Both the Nichicon HE and Panasonic FM series have relatively large endurances, too.

[endevite]

Re: vp2130b cap help

That CapXon GF has an 0.098 Ohm ESR.

Nichicon HE 50 V 180 uF 8x15 has 910 mA ripple and 0.091 Ohm ESR. It looks very close to what you want.

You could also go with Panasonic FMs, 35 V 220 uF or 150 uF, both 8 mm diameter. Their ripples are 1240 and 950 mA respectively and their ESRs are 0.041 and 0.056 Ohm. The only trouble here is that you are changing the capacitance a little bit.

Both the Nichicon HE and Panasonic FM series have relatively large endurances, too.

My planned fix maintains the correct capacitance, keeps the impedance near stock, and has a higher ripple rating, and uses KY's for the 7k hour rating.

[endevite]

Re: vp2130b cap help

My notes on cap compares and what fits and what wont.

32.667 Milliohms old 180uf 35v GF capxon x3 2430ripple 540uf total
12.692 Milliohms with FM 50v 220 + 330 3800ripple 550uf total

or 120+150+270 = 540
KY = 30.248 Milliohms, 2750 ripple
8x15,10x12.5,10x20

ZL = 15.124 Milliohms, 3509 ripple
8x16,10x12.5,10x20

YXG = 30.248 Milliohms, 2750 ripple
8x16,10x12.5,12.5x16 or 10x20 -20 ripple

35v FC = 31.447 Milliohms, 2160 ripple low ripple


theory two
4x caps, 120x150x120x150

50v YXG = 30 Milliohms, 2980 ripple 4/5k hours
8x16,10x12.5,8x16,10x12.5

50v KY = 30mohm, 2980 ripple (7k hours)
8x15,10x12.5,8x15,10x12.5

50v FM = 10.862 Milliohms, 4848 ripple
(3k,4k hours)
8x15,10x12.5,8x15,10x12.5

35v FC = 29.25 Milliohms,2220 ripple to low ripple
8x11.5,8x11.5,8x11.5,8x11.5

50v FC = 33.659 Milliohms, 2970 ripple ohm to high

50v ZL = 15.25 Milliohms, 2908 ripple 3/4khours
50v HE = 30 Milliohms, 2250 ripple ripple to low

concept 3 (must be 0.08 or lower on the 150)
mix 2 cap types of 150 vs 390
KY 150@0.12 + LXZ 390@0.054 = 37.241 Milliohms, 2260ripple
10x12.5,10x30 = dont work

FM 150@0.042&1170rip + LXZ 390@0.054+1500rip = 23.625 Milliohms,2670rip
4k/7k hours
10x12.5,10x30

or 270+270 12.5x15
HE or KY 50v = 30.5 Milliohms, 2520ripple @7k hours, wont fit

[endevite]

Re: vp2130b cap help

For the record, the caps I evaluated for probable fix, are,

HE,KY,ZL,YXG,FM,PA,LXV,PW,FC,KZE,LXY
favoring ruby, pan or chemi-con of course.

[endevite]

Re: vp2130b cap help

Little bit of a research update, samxon 180uf 35v/50v GF series caps would work as a direct drop in, but they are only 3k hour lifespan, hard to find, and I'm unaware of reliability with this series.

[endevite]

Re: vp2130b cap help

Rubycon ZLJ 180uf 35v 8x11.5 has better ratings almost all the way around, slightly lower impedance, and are 9k hour rated. But hard to find.

[momaka]

Re: vp2130b cap help

The endurance/lifespan rating is only important if you're going to run the cap at the maximum rated voltage, ripple current, and temperature. Lower any of these a little bit and the cap might last much longer than that (if you think about it, 9000 hours is just slightly more than a year - and we know that even caps with lower endurance/lifespan almost always last much longer than that).

[endevite]

Re: vp2130b cap help

The endurance/lifespan rating is only important if you're going to run the cap at the maximum rated voltage, ripple current, and temperature. Lower any of these a little bit and the cap might last much longer than that (if you think about it, 9000 hours is just slightly more than a year - and we know that even caps with lower endurance/lifespan almost always last much longer than that).

Long life rated caps are always good for inverters, they are given that life rating based on max stress, lower stress just means more life span, it's just more or less a rating on the fluids durability, but it's not just that for those ZLJ's, they are also 1200 ripple rated per 35v 180uf cap, low frequency ripple curve, and they are decent on impedance (lower than capxon gf's but not to far from spec).

[endevite]

Re: vp2130b cap help

Monitor all fixed and works like a champ kicking on nearly instantly without any oddities.

Here is "a" fix using cap's that you can actually buy in the states.

Alternatively if you can get them, Rubycon ZLJ's work as perfect replacements with much better ratings for the inverter.

I will cover the powersupply, usb, and mainboard recap info on following posts. The job in total involves 21 caps to be replaced that's including the 4 on the inverter.

This fix is specifically for inverter board INV20-6009 found in the Viewsonic vp2130b and vp2030b monitors.

It involves using 4 caps in place of the original 3x CapXon 35v 180uf caps with a rating of 810ripple support and 91miliohm, all 3 caps are run in parallel.

The CapXon stock ratings for these particular GF caps is as follows,

3k hour rated
810 ripple ea, 2430 ripple total
98 miliohm ea, 32.667 Milliohms total

Freq Ripple
0.72@120hz, 0.90@1k, 0.98@10k and 1.0@50to100k

Cap's used in fix, NCC (Chemi-Con) KY series
2x 120uf 50v and 2x 150uf 50v
2x EKY-500ELL121MH15D 50v 120uf KY
2x EKY-500ELL151MJC5S 50v 150uf KY

digikey part#'s
565-1602-ND
565-1603-ND

120uf Stats
7k hour rated
730 ripple ea, 1460 total

150uf Stats
7k hour rated
760 ripple ea, 1520 total

2980 ripple total from all 4 caps

All 4 caps have are 120 miliohm
But total at 30 Milliohms being in parallel @ x4 instead of x3

Freq Ripple
0.40@120hz, 0.75@1k, 0.90@10k, 1.0@100k


All in all you get 30miliohm instead of 32.667 and slightly higher Ripple support, lower ripple frequency multiplier and a longer life span while maintaining the same capacitance.

Now for the pictures, Original has the crappy green GF CapXons, following will be board with 3 new KY caps (150,120,empty spot,150), then a picture of a single cap with bent legs and lastly a couple images showing the finished bridge to make it a 4 cap repair job. The back of the board shot is also included so you can see the parallel circuit.

When you put the 8x15 cap on the 10x12.5 cap on the right side to make the bridge, bend the legs just right so you get as much contact as possible for a good joint, also wire wrapping with some 30awg silver kynar wouldn't hurt.

[endevite]

Re: vp2130b cap help

Ok for the Powersupply, all my caps were good, however A Taicon existed that I did not trust, so I replaced it. Other powersupplies have been known to have bad caps however mine did not, but you can find those searching these forums.

This is for powersupply EADP-64BF on the Viewsonic vp2130b, may also be the same powerboard in the 2030b.

Cap replaced
Taicon PW(P) 25v 220uf (Best info I could find anyway)
8x11.5 234miliohm 555 ripple 3k hr rated

Ripple Freq
0.65@120hz, 0.85@1k, 1.0@10k+

Replaced with

1x EKZE250ELL221MHB5D 25v 220uf KZE
Digikey part#
565-1674-ND

8x11.5 72miliohm 760 ripple 3k hr rating

Ripple Freq
0.50@120hz, 0.73@1k, 0.92@10k 1.0@100k

Removing the old cap will require using a dental pick or something of the sort to pick off the white nasty glue and scrap it off for clearance for new cap.

[endevite]

Re: vp2130b cap help

Correction on the cap on powersupply fix,
ripple freq table I believe is

Ripple Freq
0.50@120hz, 0.75@1k, 0.90@10k 1.0@100k