| Cursitor Doom <cd@notformail.com>: Nov 15 06:58PM On Mon, 14 Nov 2022 14:41:27 -0800, John Robertson <jrr@flippers.com> wrote: >parts listed. >A work in progress! >John :-#)# Sounds interesting, but how do you set the price for the rarer stuff when there's none around to compare against? |
| John Robertson <jrr@flippers.com>: Nov 16 07:45AM -0800 On 2022/11/15 10:58 a.m., Cursitor Doom wrote: >> John :-#)# > Sounds interesting, but how do you set the price for the rarer stuff > when there's none around to compare against? I simply try and figure out what it could possibly be worth to someone and price accordingly. Not aiming for the folks looking for a deal - the person who NEEDS that chip and is willing to pay for it. I also factor in staff costs to create the parts listing. I have some chips that sell once a year or two, but I get $XXUS for them. The cost once up is zero. I have several thousand semiconductors to put up that I bought from a TV parts supply house...pricing those is fun. I do search to see if it is available and price accordingly, or guess at what someone might pay, and if I have three or 1,000 of the part. I guess wrong a lot. eBay is one way for trying to find the value of something, but I've always hated the fact that you can bit in the last micro-second (snipping) and no-one has the time to counterbid. To me it should be run like an auction house - those guys know how to squeeze a buck out of something, leaving little if anything on the table. So, if there is a last minute bid, then that sets a timer "going", pause (no more bids?), "going", pause (no added bids?) GONE to the highest bidder. Or "going" (new bid), "going" (pause no bids), "going" (new bid - some minimum increment), "going" (pause)...."GONE". John :-#)# -- (Please post followups or tech inquiries to the USENET newsgroup) John's Jukes Ltd. #7 - 3979 Marine Way, Burnaby, BC, Canada V5J 5E3 (604)872-5757 (Pinballs, Jukes, Video Games) www.flippers.com "Old pinballers never die, they just flip out." |
| Charles Lucas <charlesandmilly@gmail.com>: Nov 15 09:47AM -0800 On Wednesday, November 9, 2022 at 5:45:59 AM UTC-6, Peter W. wrote: > When the alternative is landfill, extraordinary measures are acceptable. > Peter Wieck > Melrose Park, PA You would need to know the laser power measure of the infrared (red) laser. With multi-format read devices or lasers, they have to be calibrated to their specifications. It would be helpful to acquire the owner's manual for that. I stated this because for the laser to be calibrated you need to know what you are doing, the laser has to be calibrated to a very narrow range and there are several things that affect laser performance. If the laser power is good, check the spindle motor and the spindle. Does it "spin" up correctly. You can use a strobe light to check this. How about the sled motor? Is the load and eject mechanism in time? etc... Provided the detector circuits work and the other electronics work correctly, and the laser is clean, then... we can get to the laser adjustments, but you must be extremely cautious and careful with this. When we get to the adjustments, you have tracking gain, focus fain, focus offset, tracking offset-- just to name a few and you need an oscilloscope to "measure" the wave when doing these adjustments. Infrared can go out of calibration very quickly if not done properly (and there is a point of "no return" or "beyond redemption" with these). Similarly, you still have to check the blu ray (ultraviolet) too. CD's read linearly. DVD's and Blu Ray's do not. Other formats like .mp3 do. Different media do different things and perform at different rates. Sometimes replacing the laser pickup is a better alternative and dialing it in (on the calibration) with the same methods and equipment indicated prior is a better idea, if you can get the laser pickup inexpensively. Best wishes. From, Charles Lucas |
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