Bottlehead Forum

Bottlehead Kits => Eros Phono => Topic started by: Toys4Boys on October 08, 2023, 03:42:18 AM

Title: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 03:42:18 AM
I'm praying that I didn't cook several resistors when soldering, measuring open circuit at input/output center pins.
Title: Re: Failed Resistance Test
Post by: Paul Birkeland on October 08, 2023, 05:48:55 AM
Can you post some build photos?  What meter are you using?
Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 06:40:39 AM
The meter is a generic Amazon Auto Ranging Meter, Assark. I am getting an open circuit when I test the ends of the aforementioned resistors, other 90 ohms seem to measure in range.
Title: Re: Failed Resistance Test
Post by: Paul Birkeland on October 08, 2023, 06:41:19 AM
Can you send a link to the meter?
Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 06:42:35 AM
https://www.amazon.com/dp/B09F2MLTR9?psc=1&ref=ppx_yo2ov_dt_b_product_details (https://www.amazon.com/dp/B09F2MLTR9?psc=1&ref=ppx_yo2ov_dt_b_product_details)
Title: Re: Failed Resistance Test
Post by: Paul Birkeland on October 08, 2023, 06:56:13 AM
That should be able to measure the 47K resistors across the input RCA jacks.  What comes up on the screen when you try? Do you have the 620A or 85D?
Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 07:00:36 AM
85D, no reading, just seats at 0L.
Title: Re: Failed Resistance Test
Post by: Paul Birkeland on October 08, 2023, 07:28:20 AM
If you're in the US, I would go buy the ~$25 meter at Harbor Freight, then try again.  You would be the first customer we've ever had that burned up all their resistors, so my money would be on the $9 meter at Amazon just being a bit of POS.

Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 07:31:42 AM
I'ld prefer to believe that as I thought that I used proper care in my build! Okay, I'll get the HF meter.

Thanks,
Paul
Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 08:39:54 AM
I'm seeing a $20 then a $45 meter at HF, is there value for the hobbyist to get the more expensive model?
Title: Re: Failed Resistance Test
Post by: AG on October 08, 2023, 08:49:09 AM
https://www.ebay.com/itm/235244060542?epid=1400247856&hash=item36c5a37f7e:g:gLYAAOSw~mVlIEoh&amdata=enc%3AAQAIAAAA0J20nNKMRBNFuIEzF6LxwrB%2BAP2uXOHDIkBI%2BHLQflIJzq6QVwPzCjglhH3ubsQSizcGX%2ByKtwGgpk4QLBw1EWrHW60ebvfoJRfFdRWJ9qfcfKvSKqmB9LvVXkNS%2F6yzg8ChtGB9ZJVVae2bO9QEwqtJW8tplATpLkhDug6wsBJuDW6jM7DrC%2BgjSLjPhThKJW1Vy7Oy1u7U70L7JuspFuWUQVPwWBDiO3HfIOxI6PsCWM8jBnFAxJZDmXVMWie4JL%2BAabEDulocJdVlkUIBFq8%3D%7Ctkp%3ABk9SR6Dx8oniYg

not bad.
AG.
Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 08:51:57 AM
Yeah, if I get lucky! Nice find though. I looked at the reviews on the HF meters and whie there were considerably fewer for the $20 model they were overall far better than the $45 model.
Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 08:54:47 AM
Threw out a bid, might just wait till tomorrow before buying the HF model, although I am champing at the bit to get my Eros up and running  ;)
Title: Re: Failed Resistance Test
Post by: Paul Birkeland on October 08, 2023, 09:27:03 AM
https://www.harborfreight.com/9-function-digital-multimeter-with-audible-continuity-59410.html (https://www.harborfreight.com/9-function-digital-multimeter-with-audible-continuity-59410.html)


You'll need to adjust the resistance ranges to something sensible for whatever you're trying to measure, but this meter should work well for you.  The probes kind of suck though, so down the road I would also suggest some inexpensive silicone meter probes too.
Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 09:29:22 AM
Thanks Paul, just waiting to see if the Patriots get scored on again  ::) before heading out for that.
Title: Re: Failed Resistance Test
Post by: Paul Birkeland on October 08, 2023, 09:33:40 AM
They do not sell tissues at Harbor Freight unfortunately ;)
Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 09:35:04 AM
I'm way past crying, this has become comical!
Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 09:37:12 AM
Although, when I think back to the Brady era/error  :'(
Title: Re: Failed Resistance Test
Post by: Toys4Boys on October 08, 2023, 11:06:43 AM
Sad to say those 4 90 ohm resistors still measure as open circuits.
Title: Re: Failed Resistance Test
Post by: AG on October 08, 2023, 11:59:17 AM
Yeah, if I get lucky! Nice find though. I looked at the reviews on the HF meters and whie there were considerably fewer for the $20 model they were overall far better than the $45 model.
those are simple and good for what we need, newest have capacitor reading, but are more expensive.
Fluke is accurate, and a long term investment. I have mine easily 30 years with the screen protector still there, and was used a lot.
hope you will win the auction.
Andre.