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Post by stridsvognen on Nov 7, 2018 13:01:20 GMT -5
Sorry im colecting parts on my shopping list, and been working a lot with the CRT.
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Post by crtbilly on Nov 7, 2018 13:05:16 GMT -5
No worries, I'll update this thread with my progress. Thanks for getting back.
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Post by mastertech on Nov 7, 2018 15:49:22 GMT -5
Now that the colder weather has set in I can spend more time helping with this. I have an RS45 here that was giving an error light and shutting down. After partial disassembly to have the ballast externally viewable to watch during start up the projector started working properly again. Not sure if it was a bad connection but since it is currently working I can take measurements for any questions if needed for either one of you guys. Let me know.
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Post by crtbilly on Nov 7, 2018 18:21:39 GMT -5
Sounds good. I have read that replacing IC1 has fixed the problem. I also saw a repair kit on eBay for the ic's so there might be something to that. I did notice my Q1 and Q2 look a little toasty. Will spend more time once kids are in bed.  postimg.cc/nCJJbLLF |
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Post by mastertech on Nov 7, 2018 19:20:22 GMT -5
Your image did not insert correctly so I fixed it. If you have more image upload problems let me know.
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Post by stridsvognen on Nov 8, 2018 8:08:54 GMT -5
Interesting find, now do we have any idea information whats the part nr of these components.? Look at my Q2, Q3, ZD1, ZD2, and ZD3. Like ZD3 measures 0,5vdc one way and 1,9vdc the other way, is that normal.? They all show sign of overheating.  |
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Post by crtbilly on Nov 8, 2018 8:30:54 GMT -5
My board looks simular.  From mine I think I can read Q2 as "SV" according to a identification code book it appears they are JFET "SST177" . Problem is it's discontinued from what I can see. Tried looking for replacement last night. IC1 is LNK363DG, might just pick one up. I have a few diodes I need to decode. Part list continues |
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Post by crtbilly on Nov 8, 2018 8:46:04 GMT -5
Ok So This is what I have for parts so far based off of what I could find from the codes pulled from the components. I wasn't able to read anything from the "ZD" components. Will try and test them later to see what I can see. Q3 "WB" 2SD1383K Q1 Q2 "SV" SST177 IC1 LNK363DG z1 ? z2 ? z3 ? postimg.cc/QBV7XG3f |
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Post by mastertech on Nov 8, 2018 10:23:09 GMT -5
Interesting find, now do we have any idea information whats the part nr of these components.? Look at my Q2, Q3, ZD1, ZD2, and ZD3. Like ZD3 measures 0,5vdc one way and 1,9vdc the other way, is that normal.? They all show sign of overheating. My ZD3 measures close to that, in circuit. |
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Post by mastertech on Nov 8, 2018 10:26:50 GMT -5
Ok So This is what I have for parts so far based off of what I could find from the codes pulled from the components. I wasn't able to read anything from the "ZD" components. Will try and test them later to see what I can see. Q3 "WB" 2SD1383K Q1 Q2 "S7" SST177 IC1 LNK363DG z1 ? z2 ? z3 ? postimg.cc/QBV7XG3fMy ZD1,2 and 3 do not shows any signs of heat and there are no markings on them. |
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Post by stridsvognen on Nov 8, 2018 11:28:22 GMT -5
IC1 is a less than 2$ component, so might be worth a shot, none of the components that looks to have been hot measures open or shorted, so if others report IC1 as a common faliur, why not.
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Post by crtbilly on Nov 8, 2018 13:08:25 GMT -5
IC1 is a less than 2$ component, so might be worth a shot, none of the components that looks to have been hot measures open or shorted, so if others report IC1 as a common faliur, why not. I think I got the code incorrect in my previous posting. I referred to Q1 as S7 but it is SV witch I haven't found anything on. And IC1 is LNK363DN not G I have gone ahead and ordered a replacement for IC1. I still don't like the condition of the other burnt components. I emailed the guy in China who had the ebay listing for the IC1 to see if he can supply the other components since I am unable to find them. will see if he can supply it. Wish I could find a schematic. I also saw a Chinese replacement for this ballast. It was only $45 lol. Sounds interesting. www.rushsupply.top/compatible-projector-lamp-ballast-for-jvc-dlax70-dlax9-dlax90-rpb0526ga-p-5141.html |
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Post by stridsvognen on Nov 8, 2018 13:55:00 GMT -5
That chinese balaster is different. Mine dont have a cable on it, its plugged directly in on the board in both ends.
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Post by crtbilly on Nov 8, 2018 14:06:16 GMT -5
Lol, agreed. Not sure I'd feel comfortable having that in my projector.
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Post by stridsvognen on Nov 8, 2018 14:07:49 GMT -5
i think its just a different model, question is if its just the picture. Its all made in Chine no matter what we buy.
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