Mickey Mouse Posted November 17, 2023 Share Posted November 17, 2023 Hello everyone, this is Mickey Mouse I'm new, but hope to find information on a White Spectrum XLT. Is anyone worked on main board or display? I tried to replace all caps and now Cap # 31 on board 505- 0198-B exploder's every time I put one in. I'm using 12 Volt battery pack. Can anyone help me. have checked polarity and they are in the correct way. C31 is a 220uf, 16volt cap. Link to comment Share on other sites More sharing options...
Mickey Mouse Posted November 17, 2023 Author Share Posted November 17, 2023 Also, I replaced caps in display board and display would come on with blank screen for a few seconds then turn off. Link to comment Share on other sites More sharing options...
Mickey Mouse Posted November 17, 2023 Author Share Posted November 17, 2023 I was re-checking the main board and found an IC chip U2, looks burned up. But cannot identify its numbers. I would appreciate if someone could identify, this chip number. (IC - U2) and post it to me. Link to comment Share on other sites More sharing options...
phrunt Posted November 20, 2023 Share Posted November 20, 2023 Maybe @Geotech can help? 1 Link to comment Share on other sites More sharing options...
Geotech Posted November 20, 2023 Share Posted November 20, 2023 On 11/17/2023 at 12:19 PM, Mickey Mouse said: I tried to replace all caps and now Cap # 31 on board 505- 0198-B exploder's every time I put one in. Makes no sense. C31 is simply a cap directly across the battery. If it explodes then it's either backwards, (way) too low of a voltage rating, or the circuit is seriously screwed up. On 11/17/2023 at 1:45 PM, Mickey Mouse said: I was re-checking the main board and found an IC chip U2, looks burned up. But cannot identify its numbers. I would appreciate if someone could identify, this chip number. (IC - U2) and post it to me. U2 is a "4316" quad switch. Possibly a CD4316, but 74HC4316 and 74HCT4316 might also work. If this part is cooked, then you've got some super major problems. 4 1 Link to comment Share on other sites More sharing options...
Cascade Steven Posted December 4, 2023 Share Posted December 4, 2023 Geotech: Although I do not have an XLT, I just wanted to say thank you for your input and sharing your knowledge on these instruments. I am certain that there will be others in the future that will appreciate access to these little tidbits of info and insight. I appreciate your contribution. Thank you. 7 Link to comment Share on other sites More sharing options...
bklein Posted January 20 Share Posted January 20 If you are going to replace caps, test them after you remove them one at a time with a good meter that doesn’t just give you value but ESR and other parameters. So many products have been damaged by people doing cap replacements without reason. The instructions for the XLT rechargeable pack say it is 10V not 12V. So either you are putting the cap in backwards or your pack voltage is too high. The CD4316 has a max VC spec of 10V so maybe you damaged several components with your “12V” pack. Link to comment Share on other sites More sharing options...
locator Posted January 20 Share Posted January 20 2 hours ago, bklein said: If you are going to replace caps, test them after you remove them one at a time with a good meter that doesn’t just give you value but ESR and other parameters. So many products have been damaged by people doing cap replacements without reason. The instructions for the XLT rechargeable pack say it is 10V not 12V. So either you are putting the cap in backwards or your pack voltage is too high. The CD4316 has a max VC spec of 10V so maybe you damaged several components with your “12V” pack. Using the standard battery pack, which holds 8 penlight AA cells, each 1.5 Volt, will not damage anything if all works as it should. (8x1.5V=12V if I remember correctly?!) Link to comment Share on other sites More sharing options...
bklein Posted January 20 Share Posted January 20 You’re right. Link to comment Share on other sites More sharing options...
locator Posted January 21 Share Posted January 21 14 hours ago, bklein said: You’re right. No prob at all. May be you had the old style battery pack in mind with 4 C-cells. Link to comment Share on other sites More sharing options...
.thumb.JPG.b46839319dc8de4aefe1f42407094dbd.JPG)
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now