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Vintage Television and Video Vintage television and video equipment, programmes, VCRs etc. |
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4th Sep 2015, 8:00 pm | #1 |
Triode
Join Date: Sep 2015
Location: Al-Kharj near Riyadh, Kingdom of Saudi Arabia.
Posts: 42
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Problem in 2 Sony Betamax SL-T7ME
My problem is with two Sony SL-T7ME's
1-One does not have a colour. 2-The other video has no power, just red LED in clock I replace all capacitors in power the green power led won't light |
6th Sep 2015, 6:59 pm | #2 |
Triode
Join Date: Sep 2015
Location: Al-Kharj near Riyadh, Kingdom of Saudi Arabia.
Posts: 42
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Re: problem in 2 betamax sony sl-t7me
I take the power from the other video its work in the video
no problem in anything just the power what I do |
7th Sep 2015, 2:37 am | #3 |
Dekatron
Join Date: May 2008
Location: Derby, UK.
Posts: 7,735
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Re: Problem in 2 Sony Betamax SL-T7ME
Are you saying you replaced all the capacitors on the power supply board but it still does not work? Double-check your work.
If you have two identical power s boards, one working and one not, you could attempt some voltage comparison checks between the two. Be very careful doing this, as there will necessarily be dangerous voltages present on the boards while live.
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If I have seen further than others, it is because I was standing on a pile of failed experiments. |
7th Sep 2015, 3:32 am | #4 |
Triode
Join Date: Sep 2015
Location: Al-Kharj near Riyadh, Kingdom of Saudi Arabia.
Posts: 42
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Re: Problem in 2 Sony Betamax SL-T7ME
Yes first i see 2 capacitor 4.7/350v Dry
i replace the 2 not working and i replaced all capacitors still not working just red light in clock in the first time when i test this vedio its work and after 1 or 2 hour stop just red light in clock |
11th Sep 2015, 3:26 pm | #5 |
Heptode
Join Date: Mar 2015
Location: Lefkada, Greece
Posts: 969
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Re: Problem in 2 Sony Betamax SL-T7ME
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11th Sep 2015, 9:31 pm | #6 | ||
Triode
Join Date: Sep 2015
Location: Al-Kharj near Riyadh, Kingdom of Saudi Arabia.
Posts: 42
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Re: Problem in 2 Sony Betamax SL-T7ME
Quote:
NEC C2335 l202b, and resistor 3w 3.3Ωk Quote:
the problem in this video, the other one have a color |
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12th Sep 2015, 11:20 pm | #7 |
Heptode
Join Date: Mar 2015
Location: Lefkada, Greece
Posts: 969
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Re: Problem in 2 Sony Betamax SL-T7ME
The chroma/luminance circuits may need new capacitors. You really need the service manual to deal with these problems.
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19th Sep 2015, 8:13 pm | #8 |
Triode
Join Date: Sep 2015
Location: Al-Kharj near Riyadh, Kingdom of Saudi Arabia.
Posts: 42
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Re: Problem in 2 Sony Betamax SL-T7ME
One fix in power
I Replace These Parts Two Transistors Broken (NEC-C2335) and Two Capacitors (4.7/350v) and one (47/16v) and One Resistor (3w 3.3Ωk) The clock not work, how to fix it |
15th Jan 2016, 7:22 pm | #9 |
Triode
Join Date: Sep 2015
Location: Al-Kharj near Riyadh, Kingdom of Saudi Arabia.
Posts: 42
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Re: Problem in 2 Sony Betamax SL-T7ME
hi
i have problem with the power i repair before yesterday i replace the belts and when i put a tape and press play the power shutdown and i hear sound like blowing now only red led i replace the two transistors nothing hapen all part i replace before are good only the two transistors read my post up what i do ... |
15th Jan 2016, 10:39 pm | #10 |
Dekatron
Join Date: Aug 2006
Location: Madrid, Spain / Wirral, UK
Posts: 7,484
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Re: Problem in 2 Sony Betamax SL-T7ME
It is clear that you lack the necessary knowledge to troubleshoot and repair this equipment effectively. Just changing components one after another will not identify the root of this fault. My advice is to STOP and take it to a technician before you wreck it completely.
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18th Jan 2016, 1:42 am | #11 |
Triode
Join Date: Sep 2015
Location: Al-Kharj near Riyadh, Kingdom of Saudi Arabia.
Posts: 42
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Re: Problem in 2 Sony Betamax SL-T7ME
Hi
i found the problem in ic power (TL494CN) i found the same (GL494) and replace 2 transistors (C2335) Last edited by alm7rom; 18th Jan 2016 at 2:11 am. |