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Printed Circuit Boards


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  #1  
Old 04-07-2017, 09:03:59 PM
b7100 b7100 is offline
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Default Printed Circuit Boards

This thread can apply to anything that has a pc board whether it is a onan generator, garage door opener or whatever. Several years ago I purchased a stair climber off craigs list in like new condition for $600. I used it for 6 months and it quit working. The state elevator laws require a liscenced installer/serviceman to work on them. The require a permit ($300) and inspection. Consequently nobody wants to repair or even sell you parts. After some testing of various switches and components I made a guess that it was a pc board. I finally found someone who would sell me one ($400). It worked for 6 mos then quit. Thinking I bought a dud I bought another one ($400). Again 6 mos it quit. The people that sold it to me said they could come out - remove it (for free) and install a new one for $4000. I got on line and found several companies that rebuilt pc boards. For $80 they would check it out. A week later I learned that there was a missing component causing the failiers. They replaced the component which could probably be purchased from digikey for $5 and charged me $160. Its been working for a year. I feel that I got ripped off for $800 by an industry aided by the state laws. The pc board business is a huge ripoff. $400 or more seems the norm to replace one. They can be repaired for much less. I hope what I have learned about pc boards can be of use to anyone that runs into the high cost of replacing them.
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Old 04-07-2017, 09:20:39 PM
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Billy J Shafer Billy J Shafer is offline
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Default Re: Printed circuit boards

You need to check out Flight Systems. Very good company and they back their work. Plus you can talk to a real person. Not some guy somewhere in somewhere.
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Old 04-07-2017, 09:41:44 PM
pegasuspinto pegasuspinto is online now
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Default Re: Printed circuit boards

Probably a MOV, surge protector. Good electrical design engineers add surge protection, and then a bean counter removes it. Someone else with the same unit has never needed a board, and yours dies every 6 months, lol.

Don't forget that they had to fix the problem AND add the component. $140 is a pretty good price. Troubleshooting, repair, and improve a board that I bet they couldn't get a schematic on, is no small talent.
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Old 04-07-2017, 09:58:13 PM
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Default Re: Printed circuit boards

I obtained a wireing diagram which I furnished for thier use in diagnosing the pc board. For $160 I was very pleased with the results. The alternative would have been new $4000 stair climber. Getting up and down stairs is gtting very chalenging. It seems as though some people are out to take advantage of someone who has physical limitations for financial gain. It is frustrating.
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Old 04-07-2017, 10:25:25 PM
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Default Re: Printed circuit boards

I know what you mean. I am looking for some leg braces. But I think I need a bank loan first. Or learn how to crawl.
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Old 04-07-2017, 10:40:59 PM
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Default Re: Printed circuit boards

B, it's not just the medical industry that sticks it to you...
I have a 2004 GMC Sierra pickup, the printed board in the instrument panel hasn't worked in 9 years.. the TAC reads 5000 rpm the speedo is stuck at 97 mph the oil pressure gauge sits at zero and the temp gauge never move's.
The only thing that does work it the odometer.
$300. To repair the damm thing, with no guarantee that it will last once you pull out of the parking lot...

Last edited by Big Bird; 04-08-2017 at 06:43:01 AM.
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Old 04-07-2017, 10:45:54 PM
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Default Re: Printed circuit boards

board repair is getting fairly common. I have a local electrical supplier that has a board repair service. I've had some Cutler Hammer soft starts repaired for @$200. I dropped the board off and 3-4 weeks later picked it repaired. CH had the board as NLA so I was happy to get it back up and running.
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Old 04-07-2017, 11:18:51 PM
TLB01 TLB01 is offline
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Default Re: Printed circuit boards

Quote:
Originally Posted by Big Bird View Post
B, it's not just the medical that sticks it to you...
I have a 2004 GMC Sierra pickup, the printed board in the instrument panel hasn't worked in 9 years.. the TAC reads 7000 rpm the speedo is stuck at 97 mph the oil pressure gauge sits at zero and the temp gauge never move's.
The only thing that does work it the odometer.
$300. To repair the damm thing, with no guarantee that it will last once you pull out of the parking lot...
Might not be the board's fault. You live in a warm, muggy salty air place. Check your MOLEX connections under the hood. You might have a connector that, thanks to Florida's air, turned into galvanic action black goop. Once salt water gets into something like the plastic of a MOLEX in a muggy place it never dries out and it just wrecks havoc.
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Old 04-07-2017, 11:31:49 PM
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Default Re: Printed circuit boards

Some pc boards are discontinued so having them repaired may be the only option.
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Old 04-07-2017, 11:47:00 PM
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Default Re: Printed circuit boards

I just repaired a CMQD 7500 HDKAT. The Inverter was dead shorted control power, a replacement inverter goes for about $2K online. Cost $1.44 for a new MOV , , the Red gismo in the pic, exact same part which I soldered in, it was the only thing which showed signs of overheating but the generator was condemned without it . Control power was dead shorted by it, would blow the fuse instantly. Works fine now, I wonder how many other inverter gens were scrapped because of this simple part failure. I have also repaired Onan YD voltage regulators with a few components but found that since all the other components on the board were 25 yrs old too, failure was a frequent occurrence just in a different place. Cheers Dan
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