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replace Gd-Rom's flat cable - Версия для печати

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+--- Тема: replace Gd-Rom's flat cable (/thread-3854.html)

replace Gd-Rom's flat cable - chth96 - 15.05.2021 20:22

Yesterday,My dreamcast suddenly cannot recognize any GD or CD-R media..(It spinned up and checked any media but it only stayed at the start menu.. won't start any dreamcast game or application)
I measured resistance value of Laser Lens by putting multimeter's red probe and black probe on 1 and 2 pin of ribbon cable connector which located on the back of Gd-Rom pickup's PCB. and to my surprise, It measured more than 1M ohm..
I fiddle with small pot of Laser Lens..But measured resistance value won't drop to less than 300k ohm..
I noticed that It has something wrong with Laser Lens or flat cable,So I put multimeter's red probe and black probe on each end of flat cable,and I finally found that 1 pin of flat cable have been break..
[Изображение: 20210515-235357-1.jpg]

I took advantage of broken DVD-RW which has wide and strong flat cable and I cut this strong flat cable into almost same width(16 pin) and height with Gd-Rom's flat cable as possible as I can..
and scratched one end of strong flat ribbon cable with knife in order to expose all 16 pin of metallic conductors .
then,I strip off blue stiffener from cut off strong ribbon cable and insert this blue stiffener together with one end of strong flat ribbon cable..

[Изображение: 20210515-235125-1.jpg]
It is somewhat hard to insert one end of strong flat ribbon cable and blue stiffener together into connector of Laser Lens. But without blue stiffener, It is impossible to steady strong flat ribbon cable in connector of Laser Lens..

Now,My dreamcast really works very well to read any CD-R or GD media like before..
I think that If Your Gd-Rom's flat cable is broken and has CD-RW or DVD-RW which have wide flat ribbon cable then you don't have to purchase any dreamcast's ribbon cable of below ebay link..
https://www.ebay.com/itm/280801156507

RE: replace Gd-Rom's flat cable - megavolt85 - 16.05.2021 11:55

you just don't need to look for a loop for dreamcast, then the price will be adequate Big Grin

select 10cm, A-type, 16P an look price for 10 pcs

RE: replace Gd-Rom's flat cable - chth96 - 16.05.2021 15:36

(16.05.2021 11:55)megavolt85 писал(а):  you just don't need to look for a loop for dreamcast, then the price will be adequate Big Grin

select 10cm, A-type, 16P an look price for 10 pcs

the flat ribbon cable of your link is reasonable price. and I think 6cm length would be more suitable than 10cm,Because length of GD-ROM's original flat ribbon cable is 7cm and I noticed that if length of flat ribbon cable is more than 7.5cm, laser lens cannot read the most outer space of CD-R or GD media.
https://ibb.co/yXg3fnz

If length of flat ribbon cable is 10cm,then surplus length of ribbon cable(3cm) would get in the way of laser lens to reach the outermost position.

RE: replace Gd-Rom's flat cable - megavolt85 - 16.05.2021 19:49

the extra three centimeters are bent near the connector on the drive board and the cable fits perfectly, it has been proven more than once Wink