Osciloscope Leader 1060 - Page 1
Forum section: electronics / testgear

author: GasGas
author_rank: Contributor
timestamp: February 11, 2017, 01:56:21 pm
content: Hello people,I received a defective scope 1060 as a gift, could someone please tell me where I can get the service manual for this scope? It has a horizontal scan defect, the R541 and R542 resistors are charred.Thanks for any info.

author: Specmaster
author_rank: Super Contributor
timestamp: February 11, 2017, 05:00:23 pm
content: I have been spending a lot of time recently looking at various scopes and I did come across a few Leaders but not many. Those that I did see, looked very similar to some other scopes. The names of which escapes me at the present but it does lead me to the conclusion that these could be made by a company that has its products rebadged by and sold on by others, similar to Pintek Electrical of Taiwan.Might be an idea to search for images on google images of various makers scopes and see if you can spot any that have the same generic appearance as yours, knobs and switch levers etc might change but not their positions?For instance I know that scopes made by Pintek are sold under their own name as well as Radiospares and Rapid Electronics and also I think Heath labels. This I discovered after many hours of detective work while searching around looking for a owners manual and also service manual for Rapid Electronics scopes 7020A and also 7025 and checking with Pintek confirmed that they were the manufacturers and also they also kindly produced copies of both manuals for me.It might be an idea to post a photo of yours on here and perhaps another members might be able assist it identifying other look-a-likes to aid your search?Good luck with your search.

author: george.b
author_rank: Frequent Contributor
timestamp: February 11, 2017, 06:17:25 pm
content: If memory serves me well, the 1021 is a rebadged Goldstar. The 1060 could be a rebadge as well.

author: GasGas
author_rank: Contributor
timestamp: February 13, 2017, 05:40:25 pm
content: I paid $ 20 for the service manual. I would like to make the same available in the Forum, but it was not possible, I received an automatic msg informing that the attachment is very large.. I have verified that the R542 and R541 resistors are 100R and 910R.When they were exchanged, the R541 started to smoke. Analyzing the circuit, I verified that the transistor Q512 was short between collector-emitter. Looking at its description, I realized that it had been replaced by a BD140 transistor ...I made the order of the original transistor (2SA1540) and when it receives it I will give sequence in the attempt of repair.

author: tautech
author_rank: Super Contributor
timestamp: February 13, 2017, 07:01:19 pm
content: Quote from: GasGas on February 13, 2017, 05:40:25 pmThese guys probably have the best collection of Leader manuals and I would recommend you upload it to them.http://service-manual.eu/index.php

author: scopeman
author_rank: Frequent Contributor
timestamp: February 14, 2017, 02:48:56 am
content: Quote from: GasGas on February 13, 2017, 05:40:25 pmWhy not just upload it towww.ko4bb.com/getsimpleTons of TE manuals there.SamW3OHM

author: GasGas
author_rank: Contributor
timestamp: March 27, 2017, 11:16:03 am
content: HelloI received Transistors 2SA1540 and changed them. The previous, heating fault of the R541 and R542 resistor has been solved, now they do not heat up and the oscilloscope is running partially.I have 2 problems yet and would like help, as it is the first scope I try to repair.The first defect can be visualized in the video below:There is an oscillation in the waveform on the left side of the screen, shifting the waveform to the right side this oscillation does not exist. Another defect is that the focus is not linear, if the focus is adjusted to a square wave and after I need to check a sine wave, I need to shift the focus potentiometer to the opposite side for a correct adjustment.Supply voltages are correct, within specifications.Thanks for a help in advance.

author: Specmaster
author_rank: Super Contributor
timestamp: April 02, 2017, 09:37:16 pm
content: What video below?

author: GasGas
author_rank: Contributor
timestamp: April 03, 2017, 10:50:12 am
content: Strange what happened, because the moment I entered the msg. Video was available.Please check the video link with the scope leader defect in the link.

author: tautech
author_rank: Super Contributor
timestamp: April 03, 2017, 06:01:35 pm
content: With another scope, check the linearity of the sweep ramp generator, it should be a nice flat rising voltage. It's just one thing to exclude from possible causes of your fault.It might not be the fault, but I'd still want to exclude it for sure.

author: GasGas
author_rank: Contributor
timestamp: April 03, 2017, 08:30:09 pm
content: Thanks, as soon as possible I will do the verification returning with the result.

author: GasGas
author_rank: Contributor
timestamp: July 18, 2017, 01:09:25 pm
content: Defect resolved. Someone has changed the positioner R532, which goes on transponder emitter Q509 position (2SA1549), from the original 910R to 2K.After switching to the correct value, scope returned to normal operation. I made the calibration according to the service manual and it was very good.

author: alm
author_rank: Super Contributor
timestamp: July 18, 2017, 01:47:04 pm
content: Congrats on the successful repair! That is definitely a problem that would be very hard to find without service manual. Did you upload it to KO4BB orxdevs.com?

author: cvanc
author_rank: Frequent Contributor
timestamp: July 18, 2017, 01:48:38 pm
content: Nice work!My oldest scope is a Leader, the thing is a tank, very reliable. My model is 2200 and for sure it was made by whoever made yours - very similar front panel. Might be a Goldstar but I wonder if Hitachi actually made them...? Not sure. In any case, enjoy.

author: GasGas
author_rank: Contributor
timestamp: July 18, 2017, 02:08:06 pm
content: Thank you.I was unable to upload to the indicated sites, I will leave here the link of the dropbox to download:https://www.dropbox.com/s/h4wxgbdmcth6vdf/1040_1060%20SERVICE%20MANUAL.pdf?dl=0

author: alm
author_rank: Super Contributor
timestamp: July 18, 2017, 02:24:45 pm
content: Thanks for posting. I uploaded it to KO4BB (see attachment) and xdevs.com (/Leader/1040_1060).

author: GasGas
author_rank: Contributor
timestamp: July 18, 2017, 02:39:40 pm
content: Thank You!