Genesis Capacitor List

[genesisguy]

Has the rainbow banding issues gone away for anyone that has done a full cap job?

[Ax Battler]

List for PAL model 2 Mega Drive (board type: PC BD MD2 VA0 PAL):

Label	Cpcity	V. Rating
-------------------------
CE1	10µF	16V
CE2	10µF	16V
CE3	10µF	16V
CE4	10µF	16V
CE5	10µF	16V
CE6	10µF	16V
CE7	10µF	16V
CE8	10µF	16V
CE9	10µF	16V
CE10	10µF	16V
CE11	10µF	16V
CE12	220µF	6.3V
CE14	220µF	6.3V
CE15	10µF	16V
CE16	220µF	16V
CE17	100µF	10V
CE18	47µF	10V
CE19	47µF	10V
CE20	10µF	16V
CE21	10µF	16V
CE22	10µF	16V
CE23	100µF	10V
CE24	47µF	16V
CE25	47µF	16V
CE26	47µF	10V
CE27	47µF	10V
CE28	47µF	10V
CE29	10µF	16V
CE30	10µF	16V
CE31	10µF	16V
CE32	10µF	16V

(Total: 31 capacitors)


Quantity list for easy ordering:

10µF	16V	x 19
47µF	10V	x 5
47µF	16V	x 2
100µF	10V	x 2
220µF	6.3V	x 2
220µF	16V	x 1

Parts are ordered. Gonna give my old MD2 a recap soon to get rid of that buzzing and hissing discussed here recently. Wish me luck!

[TmEE]

you can put the same capitance ones into same pot, just use the higher voltage ones so nothing would blow up.

[genesisguy]

My VA3 has the worst rainbow banding of my 5 model 1s. It has Chhsi caps.
I have 2 VA6 models with rubycons that have little to no rainbow banding. I also have a VA6 with Chhsi that has little to no rainbow banding. I have VA6 with rubycons that is almost as bad as my VA3 with Chhsi. So, it appears to be all over the place when it comes to which caps = more rainbow banding.

[Sticky Note]

Wow, super helpful! My VA2 isn't showing any problems yet, but I hear the capacitors in those early models are horribly cheap!

[Harry Rezqiano]

Hi. I just bought used Sega Mega Drive model 1 ( pcb type is written as IC BD M5 PAL ). I am planning to change all the capacitors ( and perhaps doing the infamous S-Video / Composite mod ).

Can I use the capacitors list in this thread to my pcb ? Thanks in advance

[Yoder]

You need to figure out which board revision you have. I would then still ID each cap because there may be differences even among the same revision.

[Harry Rezqiano]

I am totally newbie on this matters. How to figure out the board revision ? I am only see the IC BD M5 PAL word in it that worth mentioning

[ApolloBoy]

I just replaced most of the caps on my Japanese VA1 Mega Drive as it was having rainbow banding issues through composite and slight audio issues. The rainbow banding has mostly been eliminated and the audio is slightly better, though it should improve further once I replace the remaining original caps. With that said, here's a list of caps on the VA1 Mega Drive:

Label
        Voltage Rating (V)
                Capacitance (uF)
----------------------------
C1	16	220
C13	16	10
C23	10	100
C24	10	100
C30	16	10
C31	16	10
C32	10	100
C38	16	10
C4	10	100
C40	50	1
C41	16	10
C42	50	1
C43	16	10
C44	50	1
C49	10	100
C5	16	10
C50	10	220
C51	10	220
C52	10	100
C53	10	100
C55	16	10
C57	16	10
C58	50	1
C59	10	47
C60	10	47
C61	50	1
C62	50	1
C63	10	47
C64	16	10
C65	10	47
C66	10	47
C67	10	47
C68	10	47
C71	16	10
C72	16	10
C74	10	100
C79	16	100
JP1	10	47

The capacitors were mostly Unicon, who seem to be fairly reputable; I think the caps just dried out due to age as none of the caps I replaced had leaked in any way.

[Anonymouse]

Do you think a capacitor replacement could improve the jail bars? All my MegaDrives have jail bars in RGB. This included Mega Drive MK1, MK2, and Genesis 3. Ive tried them on various TVs

[ApolloBoy]

Do you think a capacitor replacement could improve the jail bars? All my MegaDrives have jail bars in RGB. This included Mega Drive MK1, MK2, and Genesis 3. Ive tried them on various TVs

IIRC, it's a VDP issue and recapping doesn't fix it.

[ps3repair1980]

Nice Guide + rep from me
and also there was a dead link (http://www.megaupload.com/?d=OK27GPFZ)

[Drakon]

Best thing you can do to remove jailbars is send your rgb through a 32x (I don't know why this works). If you don't want to use a 32x you can try to find a way to filter out the jailbars. Before I got my 32x I was filtering jailbars by adding a 12 foot s-video cable branching off and connecting to nothing. I don't know why this worked but it does. Here's a before and after screenshot, the only difference is the after screenshot has a 12 foot s-video cable branching off and connecting to nothing.





ghetto filter ftw! I wish I could find a better solution than having 12 feet of s-video cable branch off and connect to nothing but all my other efforts didn't give me the same results.

[sega16]

Why am I under the impression that sega almost in way used components blindly especially in the audio circuitry?

[ApolloBoy]

Why am I under the impression that sega almost in way used components blindly especially in the audio circuitry?

I don't think they did it blindly, I think they just used them because they were cheap.