recapping Acer AL1916

[tobotech]

First, thanks for looking. I tried to organize this post for your convenience.

Situation:
Spent half the morning doing reading FAQ, doing searches and typing this post.
I got overwhelmed choosing replacement caps for this project. I have other parts I'm ordering from digikey for other project, and so adding caps to repair these Acer AL1916 saves money and combines shipping.

My Questions (repeated at end of post):
1. looking at digicom, leaning toward panasonic 105c caps for no other reason that brand recognition, and seen on FAQ. Should I consider another brand of 105c caps with solid performance to save $?
2. What series /ripple current / esr / impedance do I need to look for? Replacing capxcom GF 105c caps.
3. One cap is NOT marked a capxcom, but is a CD81 U1 TL colored black with silver polarity stripe (47µf 50v). Can be seen in first attached photo, with red arrow saying replace this cap. What series /ripple current / esr / impedance should I choose to replace this one?


Symptoms:
I have two acer AL1916 I bought at the same time.
They both exhibited 2 seconds to black
monitorA (currently only monitor) will "warm up" after about 20 minutes of green light flashing/black screen, and then works fine.
monitorB will not "warm up" even if left on and connected to pc for hours.

Progress/work done:
I excised power board on monitorB, and it had a few bad caps.
I wrote down the values for the caps, and I'm a little overwhelmed at chosing replacements.

Complications:
my tools (including DMM, weller station, ect) are in storage over 40 miles away. It's cheaper for me to just order caps for these two monitors than make a special trip just for the dmm so I can test mosfets prior to ordering. I need to goto storage next weekend anyways.

Caps to be replaced:
20mm height limit
10/11 are Capxcom GF series 105c
c56 1000µf 10v p546 5mm
c54 1000 µf 10v p546 5mm
c51 470µf 25v p602 5mm
c52 470 µf 25v p602 5mm
c102 220µf 25v P552 8mm
c101 220µf 25V p602 8mm
c10 47µf 50v CD81 U1 TL 6mm (black and silver, looks different brand than other caps)
c8 4.7µf 50v 4mm
c59 100µf 10v p602 6mm
c62 100µf 25v p602 6mm
c57 100µf 25v p602 6mm


and then there's the giant taicon that remains glued to the board, numbers are under the glue, I read in other thread that this one rarely goes bad, and not to replace it.


My Questions (repeated from beginning of post):
1. looking at digicom, leaning toward panasonic 105c caps for no other reason that brand recognition, and seen on FAQ. Should I consider another brand of 105c caps with solid performance to save $?
2. What series /ripple current / esr / impedance do I need to look for? Replacing capxcom GF 105c caps.
3. One cap is NOT marked a capxcom, but is a CD81 U1 TL colored black with silver polarity stripe (47µf 50v). Can be seen in first attached photo, with red arrow saying replace this cap. What series /ripple current / esr / impedance should I choose to replace this one?

thanks for your time and assistance.

[tobotech]

Re: recapping Acer AL1916

oops, forgot photo (found this on forum, its same layout and caps as my power board)

[smason]

Re: recapping Acer AL1916

Some may disagree with me, but for monitors and TVs I don't sweat specs. I just replace with Panasonic FM or FC (sometimes the FC are a bit shorter and will fit where an FM won't)

I've never had a monitor or TV come back. I though I had an LG come back, but turns out it was the twin of one I had already repaired. THe user couldn't remember which one I had fixed, but it was obvious once I opened it.

So to answer all 3 questions, use Panasonic FM.

Edit:
Just looked at my notes. I have repaired 4 1916s
2 plain old 1916s 1 1916B and a 1916W

On both plain 1916s for the 5 470@25 caps I used FC. I suspect it was due to the height restriction, the FCs are shorter but a bit fatter.

Edit 2:
The photo you posted looks nothing like the board in the 2 I worked on, so measure the height and decide for yourself

[Rtech]

Re: recapping Acer AL1916

I would NOT disagree with smasons method of not being overly concerned with specs, and I do exactly as he does,and like him have had no returns.If the repair was for a Switch Mode Power Supply that had far more components on it,more different voltage outputs and far less 'free space', then that can be different.

[tobotech]

Re: recapping Acer AL1916

thanks for the responses. I feel much more comfortable moving ahead with this.
I'm going to order the FR series panasonic for it's increased lifetime hours rating, since I tend to leave my monitors on for hours each day. The physical measurements of the FR series look to add up correctly too.

also, for the sake of precision, and for my own record, the first four capacitors I listed (c56,c54,c52,c51) are 10mm dia not 5mm. (I was unable to edit first post when I noticed)

[retiredcaps]

Re: recapping Acer AL1916

Good choice. Panasonic FR caps are high quality low ESR caps.

I agree with smason that on some personal repair projects I tend to use whatever I have in stock at home rather than pay absurd shipping prices for a 65 cent capacitor.

When/if I place an order, I try to stock up on the most common values.