(solved) Keithley 2000 replace/refurbish display lens (PN: 2000-304B) - Page 1
Forum section: electronics / repair

author: pelule
author_rank: Frequent Contributor
timestamp: February 05, 2016, 08:10:02 pm
content: Hi guys,I recently hunted a Keithley 2000 (complete package including a 2000-SCAN board, all cable & docs) for a nice price, as it had a defekt, I managed to repair.It was build early in 2014 and is in a near-to-new shape, except of the display lens (the green front lid).Attached photo shows the condition as I received it, having some deep scratches (yelllow marked).As tool is worth to invest some additional money, I contacted Keithley/Agilent to check the cost for replacement part:PN: 2000-304B, price 44,- EURO net. Unfortunately the minimum order limit is 55,- EURO.Anyone interesting in a combined order (to be best located in Germany)or somebody able to recommend a must-have part for the K2000, worth to order to archieve the minimum order limit?In any case I will try to refurbish the scratchy lid using the tricks given at:https://www.eevblog.com/forum/testgear/hp-3410a-ac-microvoltmeter-restoration/msg433969/#msg433969QuoteOr does one have a better trick?BRPeLuLe

author: TheSteve
author_rank: Unknown
timestamp: February 05, 2016, 08:42:39 pm
content: You can try polishing the scratches out with proper plastic polish. I have used it before on scratches with excellent results.

author: pelule
author_rank: Frequent Contributor
timestamp: February 07, 2016, 09:23:28 pm
content: @ TheSteveWill give 'm a try, as the glass is runined already, so could not become worse.ThanksPeLuLe

author: azer
author_rank: Regular Contributor
timestamp: February 08, 2016, 04:56:24 pm
content: I've had good success with Displexhttp://www.ebay.com/itm/270846108772Though it won't remove deep scratches, as you then would need some polish with more grit, it will round the deep scratch so it is less noticeable.

author: bdivi
author_rank: Regular Contributor
timestamp: February 08, 2016, 09:16:39 pm
content: Try sandpaper first - 600 grit, then 1000, 1500 and finally toothpaste with soft cloth. I did this to a Fluke meter with deep scratches and it came out like new

author: AndyC_772
author_rank: Super Contributor
timestamp: February 08, 2016, 09:19:24 pm
content: Try Novus plastic polish. It's a 3 part kit, and I've used it to good effect on scratched LCD screens.You'll need fine sandpaper to get out the deeper scratches, but Novus will do a good job of removing the haze left behind.

author: TheSteve
author_rank: Unknown
timestamp: February 08, 2016, 09:36:24 pm
content: Quote from: AndyC_772 on February 08, 2016, 09:19:24 pmNovus are the products I use as well.

author: pelule
author_rank: Frequent Contributor
timestamp: February 09, 2016, 07:09:41 pm
content: As Novus is not offered in Germany I have ordered a small kit (#1,#2,#3) in the US.When arrived I will givem em a try...PeLuLe

author: pelule
author_rank: Frequent Contributor
timestamp: June 25, 2016, 07:57:38 pm
content: Novus plastic polish arrived from the US.Removed the deepscraches with 2000 sand paper, than finished with Novus #3, #2 and finnaally #1.Looks like new.

author: bitseeker
author_rank: Super Contributor
timestamp: June 26, 2016, 08:24:15 am
content: Nicely done. Thanks for the follow up on the outcome.