CurtPalme.com Home Theater Forum

HK-Steve

Just a question to all the Marquee modifiers,

I have added a lot of capacitance to all my boards, buffering plus filtering.
I would be interested to see if others have also added lots,

I have added LOTS, as I just added all mine together, WOW Cool

Cheers
Steve

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

I have re caped most of mine but not increased that many, except on the CLM where i added close to 5500uf. I mostly just increased the voltage ratings as that increases ripple numbers, which is a good thing. I just went with higher voltage low esr and high ripple ratings. one place i wanted to add more but only upped a few was the LVPS. I think adding more there would do ok. On the HDM, i don't think the film caps should be increased as its a resonant circuit depending on frequency so those are "tuned caps" like on the FCM. But i did up the 475 uf to 1000uf.

So what have you done steve? how much increas over stock?

Athanasios

HK-Steve · Posted: Sat Jan 24, 2009 7:43 pm Post subject:

I have done lots on every board, where and how much has been the last 3 years of testing and many hours of scope work.

So far I have over 20,000uF of caps intalled.
Certain boards really do benifit from an increase, but others are OEM values.

Plus, I also change chips for better spec units.
Not including resistors, don't get me going on resistors.

Cheers
Steve

Nashou66 · Joined: 12 Jan 2007 Posts: 16171 Location: West Seneca NY

HK-Steve · Posted: Sat Jan 24, 2009 11:15 pm Post subject:

Hmmmm, well we chatted for a long time, but resistors did not come up. Oh well maybe next time.
Awesome to chat, will talk real soon Athanasios

I am off to bed.

Cheers
Steve

cmjohnson · Joined: 03 Apr 2006 Posts: 5180 Location: Buried under G90s

On the focus board, I do two things:

1: Replace the large caps in each channel with 1000 uF caps, up from 470.

2: Place a bypass cap, a few pF metalized film type, across the leads of the
1000 uF cap, on the back side of the board.

This seems to make a slight but noticeable improvement in overall focus performance.

CJ

1031 · Joined: 22 Mar 2006 Posts: 657 Location: Finland

I havent calculated, but yes i have added capacitance to many boards. I started from Lvps, first it was just basic recapping using better quality caps but used mostly original values..little by little i have added capacitance to some rails etc. Mostly i have added capacintance to rails that are critical to video (vim, vnb´s..)