JVC HR-D120EM not accepting tape! - UK Vintage Radio Repair and Restoration Discussion Forum

dj_fivos_sak · 7th Feb 2016, 4:19 pm

Hello (again). I have a JVC VCR model HR-D120EM which died just yesterday! The machine powers on but I can't insert a cassette in. If I insert the cassette manually by turning the gears, the machine recognizes it but when I press play, The solenoid clicks but the tape loading motor doesn't take any voltage at all! I checked the main and the secondary power supply voltages and all of them are fine according to the service manual. Any thoughs? Thanks

Fivos

Freya · 7th Feb 2016, 5:32 pm

Just an idea, check for loose connectors on bottom board, had two machines that have failed after belt changes because quite a few connectors are removed to gain access.

dj_fivos_sak · 7th Feb 2016, 9:04 pm

I double-checked that and I re-soldered the connectors too. Still notihng.

cubdiesel44 · 7th Feb 2016, 10:36 pm

Hi Fivos
Sorry to butt in on your thread I used to repair video recorders in the distant past and found JVC machines do have a habit of blowing circuit protectors just for the hell of it.
They are usually in the power supply and look like a bit like a transistor but with only two legs.

dj_fivos_sak · 8th Feb 2016, 2:36 pm

Thanks cubdiesel44. Here's some pictures of the machine and the power supply schematic.

Fivos

Welsh Anorak · 8th Feb 2016, 5:17 pm

Hi
Often the circuit protectors are additional to the manual. They are designated CP and often just fail. The confusing number is x 400mA - e.g N(or F)15 is 600mA, N38 is 1.5A and so on.
Glyn

dj_fivos_sak · 8th Feb 2016, 5:34 pm

Hi Welsh. The regulator PCB on the back of the machine blew a 2.5A fuse yesterday and I replaced it with a 4A one. Is it electricaly safe now or will it cause problems (damage, electrocution, fire)?

gec2110 · 8th Feb 2016, 5:41 pm

It is always best to replace the fuse with the exact type.
Should a short circuit occur the correct fuse will blow instantly.

dj_fivos_sak · 8th Feb 2016, 7:01 pm

Quote:

Originally Posted by cubdiesel44

JVC machines do have a habit of blowing circuit protectors just for the hell of it.
They are usually in the power supply and look like a bit like a transistor but with only two legs.

Yes! That's the problem! I read the service manual carefully and I found that there's an ICP-F15 circuit protector on the bottom PCB (Mechacon, audio, servo). I checked it with my multimeter and it is open. Do you know where to find a replacement? Thanks.

dj_fivos_sak · 8th Feb 2016, 7:03 pm

https://www.youtube.com/watch?v=jw1C...ature=youtu.be

That's the problem I have by the way.

7th Feb 2016, 4:19 pm	#1
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	JVC HR-D120EM not accepting tape! Hello (again). I have a JVC VCR model HR-D120EM which died just yesterday! The machine powers on but I can't insert a cassette in. If I insert the cassette manually by turning the gears, the machine recognizes it but when I press play, The solenoid clicks but the tape loading motor doesn't take any voltage at all! I checked the main and the secondary power supply voltages and all of them are fine according to the service manual. Any thoughs? Thanks Fivos

7th Feb 2016, 5:32 pm	#2
Freya Octode Join Date: Jan 2009 Location: Falmouth, Cornwall, UK. Posts: 1,989	Re: JVC HR-D120EM not accepting tape! Just an idea, check for loose connectors on bottom board, had two machines that have failed after belt changes because quite a few connectors are removed to gain access. __________________ Stephen _________"It`s only an old telly" ___

7th Feb 2016, 9:04 pm	#3
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	Re: JVC HR-D120EM not accepting tape! I double-checked that and I re-soldered the connectors too. Still notihng.

7th Feb 2016, 10:36 pm	#4
cubdiesel44 Retired Dormant Member Join Date: Nov 2015 Location: Chipping Norton, Oxfordshire, UK. Posts: 4	Re: JVC HR-D120EM not accepting tape! Hi Fivos Sorry to butt in on your thread I used to repair video recorders in the distant past and found JVC machines do have a habit of blowing circuit protectors just for the hell of it. They are usually in the power supply and look like a bit like a transistor but with only two legs.

8th Feb 2016, 2:36 pm	#5
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	Re: JVC HR-D120EM not accepting tape! Thanks cubdiesel44. Here's some pictures of the machine and the power supply schematic. Fivos Attached Thumbnails

8th Feb 2016, 5:17 pm	#6
Welsh Anorak Dekatron Join Date: Apr 2005 Location: North Wales, UK. Posts: 6,918	Re: JVC HR-D120EM not accepting tape! Hi Often the circuit protectors are additional to the manual. They are designated CP and often just fail. The confusing number is x 400mA - e.g N(or F)15 is 600mA, N38 is 1.5A and so on. Glyn

8th Feb 2016, 5:34 pm	#7
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	Re: JVC HR-D120EM not accepting tape! Hi Welsh. The regulator PCB on the back of the machine blew a 2.5A fuse yesterday and I replaced it with a 4A one. Is it electricaly safe now or will it cause problems (damage, electrocution, fire)?

8th Feb 2016, 5:41 pm	#8
gec2110 Retired Dormant Member Join Date: Feb 2008 Location: Croydon, London, UK. Posts: 408	Re: JVC HR-D120EM not accepting tape! It is always best to replace the fuse with the exact type. Should a short circuit occur the correct fuse will blow instantly.

8th Feb 2016, 7:03 pm	#10
dj_fivos_sak Heptode Join Date: Mar 2015 Location: Lefkada, Greece Posts: 969	Re: JVC HR-D120EM not accepting tape! https://www.youtube.com/watch?v=jw1C...ature=youtu.be That's the problem I have by the way.