34" Sharp Image SI-134 Cap Kit

DustyBri

Member
Joined
Oct 12, 2005
Messages
198
Reaction score
7
Location
Oklahoma City, Oklahoma
I have a 34" Sharp Image monitor that has some horizontal bleeding issues. As far as the chassis model, I think it is a SI-134 CGA model. It has a sticker identifying it as a 34" KTMF-R and under that sticker there was another that identified it as a KTM-F34. Silk screened on the gray chassis PCB is K1-2-VO. I think it is one of the Sharp Image monitors made by Kortek based on other posts. I have identified it as a CGA model based on a few values I got off the schematics on Randy Fromm's site, the CGA schematic shows a 2W 2.2 resistor at R906 and the EGA schematic shows a 3W 15 at R906. There are a handful of other small differences but this was the easiest to spot without pulling the chassis. The odd thing about it was that it had Mace The Dark Age in it and KLOV shows it as being EGA (Medium Resolution) with an unconfirmed report that the game PCB can be switched to low resolution. I do not have the Mace PCB, I got the cabinet in a warehouse deal and the PCB was likely taken by someone else who just sold it on eBay. I wish KLOV was more accurate as far as game resolution goes.

I was able to find another post where a 33" Sharp Image monitor (not sure of the exact model number) was displaying the same type of problem which a cap kit fixed. I figured a cap kit would be a great place to start but I have not had any luck in finding a cap kit for the SI-134. I have found one or two posts that suggest that any SI-XXX cap kit may work. I started to compare some of the schematics but some of the ones on Randy Fromm's site differ from the ones on the Free Info Society website and I am not sure which ones to follow. Does anyone know if a SI-325 or SI-327 cap kit will actually work for the SI-134 or is there someone who carries cap kits for the SI-134 that I have overlooked?

Thanks!
 

Attachments

  • si134.jpg
    si134.jpg
    52.8 KB · Views: 60
  • horzbleeding.JPG
    horzbleeding.JPG
    93.4 KB · Views: 61
Last edited:
Replace C904 33uf 200v's first..for symptom.
Caps go bad in the power suppy and bad connections also
Just replace the caps you remove with the same uf and Volts
I just write down what i take out and check off list when i put it back.
Don't forget the caps on the Pincusion board and connections


they also have issues with the width coil L403 getting over heated
due to other parts and it makes it hard to adjust it, a suspect would be c422,d405
if a width problem. Or BDX53c the pinamp Transistor it sets behind the pin board
on a heatsink.
You want to put a thermal pad on the HOT or new
heatsink paste. And Ic 201, Seen the fly bad before..
You want to fix this chassis if you can,you'll need it for that Big tube.
Good Luck!
 
Replace C904 33uf 200v's first..for symptom.

Wow, excellent diagnosis! When I pulled C904 it was nice and crispy underneath so it was definitely the problem. Of course, its the hardest one to get to! I could not find a 33uf 200v on any of my parts chassis so I ordered a cap kit from Bob Roberts. For anyone who comes across a SI-134 with issues, Bob's SI-325 Medium Resolution Cap Kit is what you will need to order. It is a near exact match (for the SI-134 you do not use C909 - a 220uf 50v).

Below is a cap list in case anyone ever needs it:

1uf 50v C112 C403
10uf 35v C108 C109 C110
10uf 50v C408 C702
10uf 160v C610
22uf 25v C113 C115
22uf 50v C806 C807
33uf 16v C111
33uf 205v C609 C904
47uf 16v C500
47uf 50v C203
100uf 25v C805
100uf 200v C612 C613
220uf 35v C205* C903
220uf 50v C402
470uf 16v C119
470uf 25v C210
1000uf 16v C202 C902
1000uf 35v C614 C615 C906

Filter Cap = 330uf 400v

*FYI - Bob's kit upgrades C205 to a 330uf 50v cap.

C805 C806 and C807 are on the pincushion PCB and are not included in Bob's cap kit. The polarity silk-screened on the chassis is correct.

Thanks for your help Ohmerone!
 
Back
Top Bottom