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Main => Monitor/Video Forum => Topic started by: cornishHen on September 24, 2008, 08:32:10 pm

Title: Sanyo 20EZ B+ pot identify
Post by: cornishHen on September 24, 2008, 08:32:10 pm

I've been trying to figure out a video problem with a dk (2 board) boardset and a Sanyo 20 EZ.  I decided to cover my bases in troubleshooting the problem today and checked the B+ voltage on the Sanyo.   I found it was running on average at 91V...well below the desired 108V.  I tried to adjust the B+ pot and it seems the pot is toast.  It spins and has a small piece of metal bent/broken. 

Can anyone help me identify the B+ pot/suitable replacement?  Also, the R-Drive pot is partially broken but appears to adjust the red intensity fine.  From what i'm seeing that pot is VR254 8ohm-200ohm?  I found Bob Roberts has a nice selection of pots at:
 http://arcadecontrols.com/BBBB/pots.html (http://arcadecontrols.com/BBBB/pots.html).

Thanks for any help!

Title: Re: Sanyo 20EZ B+ pot identify
Post by: qrz on September 24, 2008, 09:40:05 pm

i'm not much help on this one.... :(

the print i found ( web) is a very poor copy . the b+ pot just happens to lie in the area missing . figures !  :hissy:

does anyone have a decent print, schematic link . or  a unit they could have a looksee ?

qrz

Title: Re: Sanyo 20EZ B+ pot identify
Post by: Kevin Mullins on September 25, 2008, 01:36:00 am

VR254 - 200 Ohm   (R-Drive)
VR601 - 5k Ohm     (B+)

Decent Schematic:
Sanyo 20EZV Schematic (http://arcarc.xmission.com/PDF_Monitors/Sanyo_20EZV_(R-C)_Rev2_Schematics.pdf)

There's a few more on ArcArc if you need those as well. Some slightly older versions, etc.

Title: Re: Sanyo 20EZ B+ pot identify
Post by: cornishHen on September 25, 2008, 08:22:43 am

Thanks for the help guys!   :cheers: 


Placing an order with bob roberts today. 

Title: Re: Sanyo 20EZ B+ pot identify
Post by: qrz on September 26, 2008, 12:47:09 pm

much better copy  !

 tnx kevin  :cheers:

qrz