Er zijn 45 resultaten gevonden

door Michael 5of9
09 jul 2019, 15:47
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Re: Philips (Black Tulip) N5748 HIFI Cassette Deck

mae schreef:
09 jul 2019, 15:23
Is there a reason (symptoms, performance) to suspect the voltages are too far out?
No symptoms or performance issues; just wondered if these voltages are acceptable :think:
The new 12 volt regulator IC431 on board U402 power supply may not be an exact 12v?
door Michael 5of9
09 jul 2019, 14:32
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Re: Philips (Black Tulip) N5748 HIFI Cassette Deck

Philips Service Manual; gives reference points for voltage readings shown on the Main board U405 drawing and the schematic diagram (bottom right). Note some of these references are quite precise to the point of a volt, giving the impression that they are important! Shown below; readings in red are ...
door Michael 5of9
31 mei 2019, 13:31
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Re: Philips (Black Tulip) N5748 HIFI Cassette Deck

There will be carbon tracks inside this control ; so an IPA is not recommended for this at all, it would washout any lubrication that is already there, the IPA will only destroy the carbon. The KONTAKT 61 is a cleaner with a lubricant ; which I already have, I have tried injecting a small spray amo...
door Michael 5of9
15 mei 2019, 16:03
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Re: Philips (Black Tulip) N5748 HIFI Cassette Deck

There is a little Interference Noise from the volume control on this unit; only when it is being turned around, and in a certain position this happens, I have tried once giving it a good spray of Kontakt Chemie: Kontakt 60 and a few days later a good spray of Kontakt WL and turning the knob after e...
door Michael 5of9
06 mar 2019, 18:01
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Re: Philips (Black Tulip) N5748 HIFI Cassette Deck

Many thanks Remi don't know about your new problem, bad capacitor? bad transistor? try to wiggle the removable PCB's in their slots? I have also been very fortunate to have a lot of help from LesJones on All About Circuits https://forum.allaboutcircuits.com/threads/philips-black-tulip-n5748-hi-fi-ca...
door Michael 5of9
06 mar 2019, 16:44
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Re: Philips (Black Tulip) N5748 HIFI Cassette Deck

I am getting Interference noise; whilst playing a cassette, it sounds something like crackle/popping in the background, like when you turn/pull out the headphones from the socket, this isn’t a continuous noise, it just happens once every few seconds, is this a suppressor problem :think:
door Michael 5of9
06 mar 2019, 15:38
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Re: Philips (Black Tulip) N5748 HIFI Cassette Deck

Rewinding Issue; it has been on my mind what airmax78 said and Remi had identified “there is slipping of the pulley” this I hadn’t picked upon; even after watching and studying the rewinding many times, I still say there is too much torque being produced by the brake. A new video concentrating on t...
door Michael 5of9
02 mar 2019, 15:43
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Rewinding Issue

At first, make sure that the brakes at the reels are not applied during rewind or fast forward. Yes I think a brake is being applied; I am hoping that someone who knows all about this problem will step in, as I need to be fully instructed before dismantling :think: At second, remove the belt to the...
door Michael 5of9
02 mar 2019, 15:24
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Re: Philips (Black Tulip) N5748 HIFI Cassette Deck

on my smartphone it says i need to log in with my microsoft account. i don't believe i have one so there you go, no picture for me Let’s try accessing via my Google Drive Account for those who haven’t a Microsoft account? You can see a video of the issue; the flywheel is rotating anticlockwise; htt...
door Michael 5of9
01 mar 2019, 18:16
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Re: Philips (Black Tulip) N5748 HIFI Cassette Deck

Remi schreef:
01 mar 2019, 17:54
sorry, your links don't seem to work here, maybe due to my vpn?
Hmmmm; both links not working?
They both work from this end?

I wonder if anyone else is experiencing this weblink issue, or knows how to make it work, they are to my original OneDrive?
door Michael 5of9
14 feb 2019, 12:33
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Rewinding Issue

Rewinding Issue; I think this is a known problem and someone knows how to resolve this, that is if it can be or maybe it just requires a small amount of service/maintenance :think: With a C60 (30min each side) cassette inserted and ready, fast forward works very well, rewind works, but tires toward...
door Michael 5of9
01 dec 2018, 13:38
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

No sound on the left side outputs

The fault with no sound on the left has been identified; it is transistor TS448 BC 548 B fitted on the U405 main board, directly above it, is board U411 which slots in and it looks like it has contributed to the 2 broken solder joints on the board. These have been refitted in a way to give more clea...
door Michael 5of9
24 nov 2018, 13:20
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

Gears Replaced

Gears replaced: This post comes in out of chronology; the instructions were a must, I used a well-fitting socket screwdriver on both sides to give support whilst pushing both of the gear onto the shaft, I cannot remember which one, there is one that you need to remove a further steel plate to gain a...
door Michael 5of9
24 nov 2018, 12:14
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

No sound on the left side outputs

No sound on the left side outputs; both VU meters are responding very well whilst playing a tape. The service manual gives a few voltage readings that can be checked on certain transistors, have done this, some of the left side voltages are down, you can see my results via the link below. https://1d...
door Michael 5of9
10 okt 2018, 17:10
Forum: Cassette- en Bandrecorderdecks
Onderwerp: Philips (Black Tulip) N5748 HIFI Cassette Deck
Reacties: 66
Weergaves: 22605

No Sound Coming From The Left Side

I have the unit working again; no sound coming from the left side, this is with either connection at the headphone socket or when connected to the amplifier via the 5 pin round DIN socket, I need help, thanks :think: