COMMITMENTS, CONTINGENCIES AND CONCENTRATIONS (Significant customer concentrations as a percentage of total accounts receivable) (Details) - Accounts Receivable [Member] - Customer Concentration Risk [Member]		9 Months Ended
		Jun. 27, 2020	Jun. 29, 2019
Xinye(HK) Electronics.Co [Member]
Concentration Risk [Line Items]
Customer concentrations risk percentage	[1]	14.90%
Super Power International [Member]
Concentration Risk [Line Items]
Customer concentrations risk percentage	[1]		15.80%
Forehope Electronic (Ningbo) Co Ltd [Member]
Concentration Risk [Line Items]
Customer concentrations risk percentage			14.40%
Haoseng Industrial Company Limited [Member]
Concentration Risk [Line Items]
Customer concentrations risk percentage	[1]	13.10%
Micron Technology, Inc
Concentration Risk [Line Items]
Customer concentrations risk percentage			10.20%

[1] Distributor of the Company's products.